/* ===================================================================
   WordCraft Pro — Design System & Global Styles
   Mobile-first, CSS variables, no external dependencies
   =================================================================== */

/* ── CSS Custom Properties (Design Tokens) ─────────────────────── */
:root {
  /* Modern Electric Blue & Cyan Color System (Inspired by ASLI Tools & SaaS Aesthetic) */
  --c-primary:        #2563EB;
  --c-primary-dark:   #1D4ED8;
  --c-primary-light:  #EFF6FF;
  --c-secondary:      #06B6D4;
  --c-secondary-dark: #0891B2;
  --c-secondary-light:#ECFEFF;
  --c-accent:         #0EA5E9;
  --c-accent-dark:    #0284C7;
  --c-accent-light:   #F0F9FF;
  --c-danger:         #EF4444;
  --c-warning:        #F59E0B;
  --c-success:        #10B981;
  --c-info:           #3B82F6;

  /* Neutrals */
  --c-bg:             #F8FAFC;
  --c-bg-alt:         #F1F5F9;
  --c-surface:        #FFFFFF;
  --c-card:           #FFFFFF;
  --c-border:         #E2E8F0;
  --c-border-dark:    #CBD5E1;
  --c-text:           #0F172A;
  --c-text-muted:     #475569;
  --c-text-light:     #64748B;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --text-xs:   0.8125rem;   /* 13px */
  --text-sm:   0.9375rem;   /* 15px */
  --text-base: 1.0625rem;   /* 17px */
  --text-lg:   1.25rem;     /* 20px */
  --text-xl:   1.4375rem;   /* 23px */
  --text-2xl:  1.75rem;     /* 28px */
  --text-3xl:  2.125rem;    /* 34px */
  --text-4xl:  2.625rem;    /* 42px */
  --text-5xl:  3.25rem;     /* 52px */

  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semi:   600;
  --fw-bold:   700;
  --fw-black:  900;

  --lh-tight:  1.3;
  --lh-normal: 1.6;
  --lh-relaxed: 1.7;
  --lh-loose:  1.85;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Borders & Radii */
  --radius-sm:  0.375rem;  /* 6px */
  --radius:     0.5rem;    /* 8px */
  --radius-md:  0.75rem;   /* 12px */
  --radius-lg:  1rem;      /* 16px */
  --radius-xl:  1.5rem;    /* 24px */
  --radius-full: 9999px;
  --border:     1px solid var(--c-border);

  /* Modern Ambient Shadows */
  --shadow-sm:  0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow:     0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.08);
  --shadow-md:  0 4px 8px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
  --shadow-lg:  0 10px 20px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl:  0 16px 32px -4px rgb(15 23 42 / 0.08), 0 4px 8px -2px rgb(15 23 42 / 0.04);
  --shadow-glow:0 0 24px -2px rgb(37 99 235 / 0.25);

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition:        250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max: 1200px;
  --container-xl:  1400px;
  --sidebar-width: 300px;
  --nav-height:    66px;
  --ad-slot-h:     90px;
}

/* ── Dark Mode Design Tokens ────────────────────────────────────── */
[data-theme="dark"] {
  /* Colors */
  --c-primary:        #38BDF8;
  --c-primary-dark:   #0284C7;
  --c-primary-light:  #082F49;
  --c-secondary:      #2DD4BF;
  --c-secondary-dark: #0D9488;
  --c-secondary-light:#042F2E;
  --c-accent:         #38BDF8;
  --c-accent-dark:    #0284C7;
  --c-accent-light:   #082F49;
  --c-danger:         #F87171;
  --c-warning:        #FBBF24;
  --c-success:        #34D399;
  --c-info:           #60A5FA;

  /* Neutrals */
  --c-bg:             #0B0F19;
  --c-bg-alt:         #111827;
  --c-surface:        #1E293B;
  --c-card:           #1E293B;
  --c-border:         #334155;
  --c-border-dark:    #475569;
  --c-text:           #F8FAFC;
  --c-text-muted:     #94A3B8;
  --c-text-light:     #64748B;

  /* Shadows */
  --shadow-sm:  0 1px 2px 0 rgb(0 0 0 / 0.4);
  --shadow:     0 1px 3px 0 rgb(0 0 0 / 0.5), 0 1px 2px -1px rgb(0 0 0 / 0.5);
  --shadow-md:  0 4px 8px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
  --shadow-lg:  0 10px 20px -3px rgb(0 0 0 / 0.6), 0 4px 6px -4px rgb(0 0 0 / 0.6);
  --shadow-xl:  0 20px 32px -4px rgb(0 0 0 / 0.7), 0 8px 12px -6px rgb(0 0 0 / 0.7);
  --shadow-glow:0 0 24px -2px rgb(56 189 248 / 0.3);
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  color: var(--c-text);
  background: var(--c-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }
table { border-collapse: collapse; width: 100%; }
strong, b { font-weight: var(--fw-semi); }

/* ── Focus Visible ─────────────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ── Prefers-Reduced-Motion (Accessibility) ─────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Skip Link (Accessibility) ─────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--c-primary);
  color: #fff;
  padding: var(--sp-2) var(--sp-4);
  z-index: 9999;
  font-weight: var(--fw-semi);
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { top: 0; }

/* ── Layout ─────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}

@media (min-width: 768px) {
  .container { padding: 0 var(--sp-6); }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--sp-8); }
}

.main-content { flex: 1; }

.page-layout {
  display: grid;
  gap: var(--sp-8);
  padding: var(--sp-8) 0;
}

@media (min-width: 1024px) {
  .page-layout--with-sidebar {
    grid-template-columns: 1fr var(--sidebar-width);
  }
}

/* ── Header / Navigation ────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-surface);
  border-bottom: var(--border);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.04);
  height: var(--nav-height);
  display: flex;
  align-items: stretch;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

@supports (backdrop-filter: blur(14px)) or (-webkit-backdrop-filter: blur(14px)) {
  .site-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }
  [data-theme="dark"] .site-header {
    background: rgba(15, 23, 42, 0.92);
  }
}

.site-header > .container {
  display: flex;
  align-items: stretch;
  width: 100%;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: var(--sp-4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo__icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.nav-logo__text {
  font-size: var(--text-xl);
  font-weight: var(--fw-black);
  color: var(--c-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  white-space: nowrap;
}

@media (max-width: 767px) {
  .nav-logo__icon {
    width: 30px;
    height: 30px;
  }
  .nav-logo__text {
    font-size: var(--text-base);
  }
}

.nav-logo__text span { color: var(--c-secondary); }

/* Desktop nav links */
.nav-links {
  display: none;
  align-items: center;
  gap: var(--sp-1);
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
}

.nav-links a {
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius);
  color: var(--c-text);
  font-weight: var(--fw-medium);
  font-size: var(--text-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-links a:hover { background: var(--c-bg-alt); color: var(--c-primary); text-decoration: none; }
.nav-links a.active { color: var(--c-primary); background: var(--c-primary-light); }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius);
  color: var(--c-text);
  font-weight: var(--fw-medium);
  font-size: var(--text-sm);
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  user-select: none;
}
.nav-dropdown__trigger:hover,
.nav-dropdown.is-open .nav-dropdown__trigger,
.nav-dropdown:focus-within .nav-dropdown__trigger {
  background: var(--c-bg-alt);
  color: var(--c-primary);
}
.nav-dropdown__trigger svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}
.nav-dropdown:hover .nav-dropdown__trigger svg,
.nav-dropdown.is-open .nav-dropdown__trigger svg {
  transform: rotate(180deg);
}

.nav-dropdown__menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background: var(--c-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-2);
  z-index: 500;
  margin-top: 4px;
}
/* Invisible bridge so mouse moving from button to menu never drops hover */
.nav-dropdown__menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
  background: transparent;
}

.nav-dropdown:hover .nav-dropdown__menu,
.nav-dropdown.is-open .nav-dropdown__menu,
.nav-dropdown:focus-within .nav-dropdown__menu {
  display: block;
}

.nav-dropdown__menu a {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  color: var(--c-text);
  font-size: var(--text-sm);
  border-radius: var(--radius);
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}
.nav-dropdown__menu a:hover,
.nav-dropdown__menu a:focus {
  background: var(--c-bg-alt);
  color: var(--c-primary);
  text-decoration: none;
  outline: none;
}

/* Mobile nav toggle */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  border: var(--border);
  background: var(--c-surface);
  color: var(--c-text);
  transition: background var(--transition-fast);
}
.nav-toggle:hover { background: var(--c-bg-alt); }
@media (min-width: 768px) { .nav-toggle { display: none; } }

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
}
.mobile-menu.is-open { display: block; }

.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background: rgb(0 0 0 / 0.5);
}

.mobile-menu__panel {
  position: absolute;
  top: 0;
  left: 0;
  width: min(300px, 85vw);
  height: 100%;
  background: var(--c-surface);
  padding: var(--sp-4);
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

.mobile-menu__close {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: var(--sp-4);
}

.mobile-menu__nav a {
  display: block;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  color: var(--c-text);
  font-weight: var(--fw-medium);
  margin-bottom: var(--sp-1);
  transition: background var(--transition-fast);
}
.mobile-menu__nav a:hover { background: var(--c-bg-alt); text-decoration: none; }
.mobile-menu__nav .menu-section-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--sp-4) var(--sp-4) var(--sp-2);
}

/* ── Hero Section ───────────────────────────────────────────────── */
.hero {
  background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
  padding: var(--sp-12) 0 var(--sp-16);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 750px;
  height: 450px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.12) 0%, rgba(37, 99, 235, 0.06) 50%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--c-primary-light);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--c-primary);
  border-radius: var(--radius-full);
  padding: var(--sp-1) var(--sp-4);
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  margin-bottom: var(--sp-4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero__eyebrow::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-secondary);
  box-shadow: 0 0 8px var(--c-secondary);
}

.hero__title {
  font-size: var(--text-3xl);
  font-weight: var(--fw-black);
  color: var(--c-text);
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-4);
  letter-spacing: -0.03em;
}

@media (min-width: 768px) {
  .hero__title { font-size: var(--text-4xl); }
}

@media (min-width: 1024px) {
  .hero__title { font-size: var(--text-5xl); }
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--c-text-muted);
  max-width: 640px;
  margin: 0 auto var(--sp-8);
  line-height: var(--lh-relaxed);
}

/* ── Tool Card (main tool interface) ────────────────────────────── */
.tool-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6) var(--sp-6) var(--sp-8);
  box-shadow: var(--shadow-xl);
  max-width: 740px;
  margin: 0 auto;
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

@media (min-width: 768px) {
  .tool-card { padding: var(--sp-8) var(--sp-10); }
}

.tool-card__title {
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  margin-bottom: var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.tool-card__title svg { color: var(--c-primary); }

/* ── Forms ──────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--sp-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--fw-semi);
  color: var(--c-text);
  margin-bottom: var(--sp-2);
}

.form-label .form-hint {
  font-weight: var(--fw-normal);
  color: var(--c-text-muted);
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-bg);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-md);
  color: var(--c-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
  background: var(--c-surface);
}

.form-input::placeholder { color: var(--c-text-light); }

.form-input--lg {
  padding: var(--sp-4) var(--sp-5);
  padding-right: 3.25rem;
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  border-radius: var(--radius-lg);
  min-height: 58px;
}

.form-input--search {
  padding-right: 3rem;
}

.input-wrapper {
  position: relative;
}

.input-clear-btn {
  position: absolute;
  right: var(--sp-3);
  top: 50%;
  transform: translateY(-50%);
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--c-bg-alt);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-full);
  color: var(--c-text-muted);
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  line-height: 1;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
}
.input-clear-btn:hover {
  color: #fff;
  background: var(--c-danger);
  border-color: var(--c-danger);
  transform: translateY(-50%) scale(1.1);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2364748B'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--sp-3) center;
  background-size: 20px;
  padding-right: 2.5rem;
}

.form-error {
  color: var(--c-danger);
  font-size: var(--text-sm);
  margin-top: var(--sp-1);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

/* ── Interactive Live Letter Tiles Rack ─────────────────────────── */
.letter-tiles-rack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-items: center;
  min-height: 52px;
  padding: var(--sp-2) var(--sp-3);
  margin-top: var(--sp-3);
  background: var(--c-bg-alt);
  border: 1px dashed var(--c-border-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.letter-tiles-rack.is-empty {
  display: none;
}

.letter-tile {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 44px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border: 2px solid #CBD5E1;
  border-bottom: 3.5px solid #94A3B8;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.06);
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: var(--fw-black);
  color: var(--c-text);
  user-select: none;
  animation: tilePop 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.letter-tile--wildcard {
  background: linear-gradient(180deg, #FEF3C7 0%, #FDE68A 100%);
  border-color: #F59E0B;
  border-bottom-color: #D97706;
  color: #92400E;
}

.letter-tile__score {
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-size: 0.625rem;
  font-weight: 800;
  line-height: 1;
  color: var(--c-primary);
}

[data-theme="dark"] .letter-tile {
  background: linear-gradient(180deg, #1E293B 0%, #0F172A 100%);
  border-color: #475569;
  border-bottom-color: #334155;
  color: #F8FAFC;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .letter-tile__score {
  color: #38BDF8;
}

[data-theme="dark"] .letter-tile--wildcard {
  background: linear-gradient(180deg, #78350F 0%, #451A03 100%);
  border-color: #D97706;
  border-bottom-color: #B45309;
  color: #FDE68A;
}

@keyframes tilePop {
  0% { transform: scale(0.75) translateY(4px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

/* Advanced options toggle */
.advanced-options {
  margin-top: var(--sp-4);
  border-top: var(--border);
  padding-top: var(--sp-4);
}

.advanced-options.is-hidden { display: none; }

.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
}

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
  line-height: 1;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  min-height: 46px;
}

.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn--primary {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px -2px rgba(37, 99, 235, 0.35);
}
.btn--primary:hover {
  background: linear-gradient(135deg, #1D4ED8 0%, #1E40AF 100%);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -2px rgba(37, 99, 235, 0.45);
}
.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px -1px rgba(37, 99, 235, 0.3);
}

.btn--secondary {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}
.btn--secondary:hover {
  background: var(--c-primary-light);
  transform: translateY(-1px);
}

.btn--ghost {
  background: var(--c-bg);
  color: var(--c-text-muted);
  border-color: var(--c-border);
}
.btn--ghost:hover {
  background: var(--c-bg-alt);
  color: var(--c-text);
  border-color: var(--c-border-dark);
}

.btn--success {
  background: var(--c-secondary);
  color: #fff;
  border-color: var(--c-secondary);
}
.btn--success:hover { background: var(--c-secondary-dark); color: #fff; }

.btn--danger {
  background: var(--c-danger);
  color: #fff;
  border-color: var(--c-danger);
}

.btn--lg {
  padding: var(--sp-4) var(--sp-8);
  font-size: var(--text-lg);
  min-height: 52px;
}

.btn--sm {
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--text-sm);
  min-height: 36px;
}

.btn--full { width: 100%; }

.btn--reset-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  min-height: 52px;
  padding: 0;
  flex-shrink: 0;
  background: var(--c-bg-alt);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-md);
  color: var(--c-text-muted);
  font-size: 1.5rem;
  transition: all var(--transition-fast);
}
.btn--reset-lg:hover {
  background: var(--c-danger);
  border-color: var(--c-danger);
  color: #fff;
  transform: scale(1.05);
  text-decoration: none;
}

.btn-group {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  align-items: center;
}

/* ── Results Area ────────────────────────────────────────────────── */
.results-section,
#resultsAnchor,
.sleep-results-container,
#sleepResultsSection {
  padding: var(--sp-8) 0 var(--sp-12);
  background: var(--c-bg);
  scroll-margin-top: calc(var(--nav-height, 66px) + 20px);
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--c-border);
}

.results-count {
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: var(--c-text);
}

.results-count strong {
  color: var(--c-primary);
  font-weight: var(--fw-black);
}

.results-query {
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  margin-top: var(--sp-1);
}

.results-query strong { color: var(--c-text); }

.results-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

/* Length group */
.word-length-group {
  margin-bottom: var(--sp-8);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
}

.word-length-heading {
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  padding: var(--sp-2) var(--sp-4);
  background: var(--c-primary-light);
  border-left: 4px solid var(--c-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.word-length-badge {
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color: #fff;
  border-radius: var(--radius-full);
  padding: 3px 12px;
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.02em;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  line-height: 1.3;
  transition: all var(--transition-fast);
}

.badge--primary {
  background: var(--c-primary-light);
  color: var(--c-primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.badge--primary:hover {
  background: var(--c-primary);
  color: #fff;
}

.words-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.word-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--c-bg);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-md);
  font-weight: var(--fw-bold);
  font-size: var(--text-base);
  color: var(--c-text);
  transition: all var(--transition-fast);
  cursor: pointer;
  user-select: none;
}

.word-chip:hover {
  background: var(--c-surface);
  border-color: var(--c-primary);
  color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px -2px rgba(37, 99, 235, 0.18);
}

.word-chip:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.word-chip__score {
  font-size: var(--text-xs);
  color: var(--c-primary);
  background: var(--c-primary-light);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: var(--fw-bold);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--sp-16) var(--sp-8);
  color: var(--c-text-muted);
}

.empty-state__icon {
  font-size: 3rem;
  margin-bottom: var(--sp-4);
}

.empty-state__title {
  font-size: var(--text-xl);
  font-weight: var(--fw-semi);
  color: var(--c-text);
  margin-bottom: var(--sp-2);
}

.empty-state__text {
  font-size: var(--text-base);
  margin-bottom: var(--sp-6);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Alert / Notice ──────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  margin-bottom: var(--sp-4);
}

.alert--error   { background: #FEF2F2; border: 1px solid #FCA5A5; color: #991B1B; }
.alert--success { background: #F0FDF4; border: 1px solid #86EFAC; color: #166534; }
.alert--info    { background: #EFF6FF; border: 1px solid #93C5FD; color: #1E40AF; }
.alert--warning { background: #FFFBEB; border: 1px solid #FCD34D; color: #92400E; }

/* ── Cards ───────────────────────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card--tool {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--c-text);
  height: 100%;
  text-align: left;
  align-items: flex-start;
}

.card--tool:hover {
  text-decoration: none;
  transform: translateY(-3px);
  border-color: var(--c-primary);
}

.card--tool .card__icon {
  width: 48px;
  height: 48px;
  background: var(--c-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.card--tool .card__title {
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  margin: 0;
  line-height: var(--lh-tight);
}

.card--tool .card__desc {
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  line-height: var(--lh-relaxed);
  margin: 0;
  flex-grow: 1;
}

/* ── Section Layout ──────────────────────────────────────────────── */
.section {
  padding: var(--sp-12) 0;
}

.section--alt { background: var(--c-bg-alt); }
.section--dark {
  background: var(--c-text);
  color: #fff;
}

.section__header {
  text-align: center;
  margin-bottom: var(--sp-10);
}

.section__eyebrow {
  font-size: var(--text-sm);
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-primary);
  margin-bottom: var(--sp-3);
}

.section__title {
  font-size: var(--text-2xl);
  font-weight: var(--fw-black);
  color: var(--c-text);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section__title { font-size: var(--text-3xl); }
}

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--c-text-muted);
  margin-top: var(--sp-4);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Tools Grid ──────────────────────────────────────────────────── */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  align-items: stretch;
}

@media (min-width: 560px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── Word Filter Pills ───────────────────────────────────────────── */
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--sp-6);
}

.filter-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: var(--c-text-muted);
  background: var(--c-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 40px;
  box-shadow: var(--shadow-sm);
}

.filter-pill:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-primary-light);
  transform: translateY(-1px);
}

.filter-pill.active {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 12px -2px rgba(37, 99, 235, 0.35);
}

/* ── Breadcrumbs ─────────────────────────────────────────────────── */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  padding: var(--sp-4) 0;
}

.breadcrumbs a { color: var(--c-text-muted); }
.breadcrumbs a:hover { color: var(--c-primary); }
.breadcrumbs__sep { color: var(--c-text-light); }
.breadcrumbs__current { color: var(--c-text); font-weight: var(--fw-medium); }

/* ── Share Buttons ───────────────────────────────────────────────── */
.share-section {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  padding: var(--sp-4) 0;
  border-top: var(--border);
  border-bottom: var(--border);
  margin: var(--sp-6) 0;
}

.share-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text-muted);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
  min-height: 36px;
}

.share-btn--copy { background: var(--c-bg-alt); color: var(--c-text); }
.share-btn--copy:hover { background: var(--c-border); }
.share-btn--copy.copied { background: var(--c-success); color: #fff; }

.share-btn--twitter  { background: #000; color: #fff; }
.share-btn--facebook { background: #1877F2; color: #fff; }
.share-btn--whatsapp { background: #25D366; color: #fff; }
.share-btn--twitter:hover  { opacity: 0.85; }
.share-btn--facebook:hover { opacity: 0.85; }
.share-btn--whatsapp:hover { opacity: 0.85; }

/* ── FAQ Section ─────────────────────────────────────────────────── */
.faq-section { padding: var(--sp-12) 0; }

.faq-list {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

.faq-item {
  border-bottom: var(--border);
}

.faq-item:first-child { border-top: var(--border); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--sp-5) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  cursor: pointer;
  gap: var(--sp-4);
}

.faq-question:hover { color: var(--c-primary); }

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--c-text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.is-open .faq-icon { transform: rotate(45deg); color: var(--c-primary); }

.faq-answer {
  display: none;
  padding: 0 0 var(--sp-5);
  color: #111827;
  line-height: var(--lh-loose);
  font-size: 1.0625rem;
}

.faq-answer p {
  color: #111827;
  line-height: var(--lh-loose);
  margin-bottom: var(--sp-3);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-item.is-open .faq-answer { display: block; }

/* ── Related Tools ───────────────────────────────────────────────── */
.related-tools {
  background: var(--c-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  margin-top: var(--sp-8);
}

.related-tools__title {
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  margin-bottom: var(--sp-4);
}

.related-tools__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.related-tool-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: var(--c-surface);
  border: var(--border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.related-tool-link:hover {
  background: var(--c-primary-light);
  border-color: var(--c-primary);
  color: var(--c-primary);
  text-decoration: none;
}

/* ── Ad Slots ────────────────────────────────────────────────────── */
.ad-slot {
  margin: var(--sp-6) 0;
  text-align: center;
}

.ad-slot__label {
  font-size: var(--text-xs);
  color: var(--c-text-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--sp-1);
}

.ad-slot__container {
  min-height: var(--ad-slot-h);
  background: var(--c-bg-alt);
  border-radius: var(--radius);
  border: 1px dashed var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-slot--leaderboard .ad-slot__container { min-height: 90px; }
.ad-slot--rectangle .ad-slot__container   { min-height: 250px; }

/* ── Blog ────────────────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

.blog-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease;
}

.blog-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 1;
}

.blog-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.25);
}

.blog-card:hover::before {
  opacity: 1;
}

.blog-card__body {
  padding: var(--sp-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.blog-card__category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--c-primary-light);
  color: var(--c-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.blog-card__category-badge:hover {
  background: var(--c-primary);
  color: #ffffff;
  text-decoration: none;
}

.blog-card__read-time {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  color: var(--c-text-light);
}

.blog-card__read-time svg {
  stroke: currentColor;
  opacity: 0.8;
}

.blog-card__title {
  font-size: 1.1875rem;
  font-weight: var(--fw-bold);
  line-height: 1.35;
  margin-bottom: var(--sp-3);
  letter-spacing: -0.01em;
}

.blog-card__title a {
  color: var(--c-text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.blog-card__title a:hover {
  color: var(--c-primary);
  text-decoration: none;
}

.blog-card__excerpt {
  font-size: 0.9375rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  margin-bottom: var(--sp-6);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  margin-top: auto;
  border-top: 1px solid var(--c-border);
}

.blog-card__author-info {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.blog-card__avatar-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.blog-card__author-name {
  display: block;
  font-size: 0.8125rem;
  font-weight: var(--fw-bold);
  color: var(--c-text);
  line-height: 1.2;
}

.blog-card__date {
  display: block;
  font-size: 0.75rem;
  color: var(--c-text-light);
  line-height: 1.2;
  margin-top: 2px;
}

.blog-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8125rem;
  font-weight: var(--fw-bold);
  color: var(--c-primary);
  background: var(--c-primary-light);
  padding: 6px 14px;
  border-radius: var(--radius);
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(37, 99, 235, 0.12);
}

.blog-card__cta:hover {
  background: var(--c-primary);
  color: #ffffff;
  text-decoration: none;
  border-color: var(--c-primary);
  transform: translateX(2px);
}

.blog-card__cta-arrow {
  transition: transform 0.2s ease;
  display: inline-block;
}

.blog-card__cta:hover .blog-card__cta-arrow {
  transform: translateX(3px);
}

/* Dark Mode refinements for Blog Card */
[data-theme="dark"] .blog-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
}

[data-theme="dark"] .blog-card__category-badge {
  background: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  border-color: rgba(56, 189, 248, 0.2);
}

[data-theme="dark"] .blog-card__category-badge:hover {
  background: var(--c-primary);
  color: #0B0F19;
}

[data-theme="dark"] .blog-card__cta {
  background: rgba(56, 189, 248, 0.12);
  color: #38BDF8;
  border-color: rgba(56, 189, 248, 0.25);
}

[data-theme="dark"] .blog-card__cta:hover {
  background: var(--c-primary);
  color: #0B0F19;
  border-color: var(--c-primary);
}

/* ── Article Content ─────────────────────────────────────────────── */
.article-content {
  width: 100%;
  max-width: 100%;
  font-size: 1.125rem;
  line-height: 1.8;
  color: #111827;
}

.article-content h1 {
  font-size: var(--text-3xl);
  font-weight: var(--fw-black);
  margin-top: var(--sp-10);
  margin-bottom: var(--sp-4);
  color: #0f172a;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}

.article-content h2 {
  font-size: 1.85rem;
  font-weight: var(--fw-black);
  margin-top: var(--sp-10);
  margin-bottom: var(--sp-4);
  color: #0f172a;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}

.article-content h3 {
  font-size: 1.45rem;
  font-weight: var(--fw-bold);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
  color: #0f172a;
  line-height: var(--lh-tight);
}

.article-content h4 {
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-2);
  color: #0f172a;
}

.article-content p {
  font-size: 1.125rem;
  line-height: 1.8;
  color: #111827;
  margin-bottom: var(--sp-6);
}

.article-content ul, .article-content ol {
  font-size: 1.125rem;
  line-height: 1.8;
  color: #111827;
  margin-bottom: var(--sp-6);
  padding-left: var(--sp-8);
  list-style: disc;
}
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: var(--sp-3); color: #111827; }
.article-content strong { color: #000000; font-weight: var(--fw-bold); }
.article-content em { font-style: italic; }

.article-content a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}
.article-content a:hover {
  color: var(--c-primary-dark);
}

.article-content blockquote {
  border-left: 4px solid var(--c-primary);
  background: var(--c-bg-alt);
  padding: var(--sp-4) var(--sp-6);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: var(--sp-6) 0;
  color: #111827;
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.8;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--c-bg-alt);
  color: var(--c-primary-dark);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
}

/* ── Content Instruction Steps & Benefit Cards ────────────────────── */
.instruction-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-left: 5px solid var(--c-primary);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  margin-bottom: var(--sp-8);
  box-shadow: var(--shadow-sm);
}
@media (min-width: 768px) {
  .instruction-card { padding: var(--sp-8); }
}

.instruction-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-4);
}

.instruction-step-box {
  background: var(--c-bg);
  padding: var(--sp-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.instruction-step-box:hover {
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.instruction-step-box strong {
  color: var(--c-primary);
  display: block;
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
  margin-bottom: var(--sp-2);
}
.instruction-step-box span {
  font-size: var(--text-base);
  color: var(--c-text);
  line-height: var(--lh-normal);
  display: block;
}
.instruction-step-box code {
  background: var(--c-bg-alt);
  color: var(--c-text);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--c-border);
  font-weight: 600;
  font-size: 0.9em;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--sp-5);
  margin-bottom: var(--sp-8);
}
.benefit-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.benefit-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.benefit-card h3, .benefit-card h4 {
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: var(--c-primary);
  margin-bottom: var(--sp-2);
}
.benefit-card p {
  font-size: var(--text-base);
  color: var(--c-text-muted);
  line-height: var(--lh-normal);
  margin: 0;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--c-text);
  color: rgb(255 255 255 / 0.7);
  padding: var(--sp-12) 0 var(--sp-6);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-10);
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer-brand .nav-logo__text { color: #fff; }
.footer-brand .nav-logo__text span,
.footer-brand .nav-logo__accent { color: #34D399; }
.footer-brand p {
  margin-top: var(--sp-4);
  font-size: var(--text-sm);
  line-height: var(--lh-loose);
}

.footer-col__title {
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-4);
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--sp-2); }
.footer-col a {
  font-size: var(--text-sm);
  color: rgb(255 255 255 / 0.6);
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: #fff; text-decoration: none; }

.footer-bottom {
  border-top: 1px solid rgb(255 255 255 / 0.1);
  padding-top: var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
  font-size: var(--text-sm);
}

.footer-bottom a { color: rgb(255 255 255 / 0.6); }
.footer-bottom a:hover { color: #fff; text-decoration: none; }

/* ── Word List Page ───────────────────────────────────────────────── */
.word-list-alpha {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
}

.alpha-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: var(--border);
  border-radius: var(--radius);
  font-weight: var(--fw-semi);
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.alpha-link:hover, .alpha-link.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
  text-decoration: none;
}

.word-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-1);
}

@media (min-width: 480px) {
  .word-list-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
  .word-list-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .word-list-grid { grid-template-columns: repeat(5, 1fr); }
}

.word-list-item {
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.word-list-item:hover { color: var(--c-primary); }

/* ── Wordle Solver UI ─────────────────────────────────────────────── */
.wordle-grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.wordle-row {
  display: flex;
  gap: var(--sp-2);
  align-items: center;
}

.wordle-cell {
  width: 52px;
  height: 52px;
  border: 2px solid var(--c-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  font-size: var(--text-xl);
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--c-surface);
  position: relative;
}

.wordle-cell[data-state="correct"]  { background: #22C55E; border-color: #22C55E; color: #fff; }
.wordle-cell[data-state="present"]  { background: #EAB308; border-color: #EAB308; color: #fff; }
.wordle-cell[data-state="absent"]   { background: #94A3B8; border-color: #94A3B8; color: #fff; }

.wordle-legend {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  font-size: var(--text-sm);
  margin-bottom: var(--sp-6);
}

.wordle-legend-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.wordle-legend-dot {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
}

.wordle-legend-dot--correct { background: #22C55E; }
.wordle-legend-dot--present { background: #EAB308; }
.wordle-legend-dot--absent  { background: #94A3B8; }

/* ── Page Header ─────────────────────────────────────────────────── */
.page-header {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: #fff;
  padding: var(--sp-8) 0;
  margin-bottom: var(--sp-8);
}

.page-header__title {
  font-size: var(--text-3xl);
  font-weight: var(--fw-black);
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-2);
}

.page-header__subtitle {
  font-size: var(--text-lg);
  opacity: 0.85;
}

/* ── Tables ───────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; }

table.data-table { width: 100%; font-size: var(--text-sm); }
table.data-table th {
  background: var(--c-bg-alt);
  font-weight: var(--fw-semi);
  text-align: left;
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 2px solid var(--c-border);
}
table.data-table td {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: var(--border);
  vertical-align: middle;
}
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr:hover td { background: var(--c-bg); }

/* ── Pagination ───────────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-8) 0;
  flex-wrap: wrap;
}

.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--sp-3);
  border: var(--border);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text-muted);
  background: var(--c-surface);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.pagination__btn:hover { background: var(--c-bg-alt); color: var(--c-text); text-decoration: none; }
.pagination__btn.active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.pagination__btn.disabled { opacity: 0.45; pointer-events: none; cursor: default; }
.pagination__prev, .pagination__next { font-weight: var(--fw-semibold); padding: 0 var(--sp-4); }

/* ── Utilities ────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-muted  { color: var(--c-text-muted); }
.text-primary { color: var(--c-primary); }
.text-sm     { font-size: var(--text-sm); }
.font-bold   { font-weight: var(--fw-bold); }
.mt-4 { margin-top: var(--sp-4); }
.mt-6 { margin-top: var(--sp-6); }
.mt-8 { margin-top: var(--sp-8); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }
.mb-8 { margin-bottom: var(--sp-8); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: var(--sp-2); }
.gap-4 { gap: var(--sp-4); }
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Loading Spinner ──────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Dark mode preference (minimal) ──────────────────────────────── */
@media (prefers-color-scheme: dark) {
  /* Not implementing full dark mode for now — focus on performance */
}

/* ── Multi-Language Switcher UI ──────────────────────────────────── */
.nav-lang-dropdown {
  position: relative;
}

.nav-lang-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--c-text);
  background: transparent;
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-lang-btn:hover {
  background: var(--c-surface-hover);
  border-color: var(--c-primary);
}

.nav-lang__flag {
  font-size: 1.1rem;
  line-height: 1;
}

.nav-lang-menu {
  min-width: 170px;
  right: 0;
  left: auto;
}

.nav-lang-item {
  display: flex !important;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--text-sm);
  color: var(--c-text) !important;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.nav-lang-item:hover {
  background: var(--c-surface-hover);
}

.nav-lang-item.is-active {
  font-weight: var(--fw-bold);
  color: var(--c-primary) !important;
  background: rgba(79, 70, 229, 0.08);
}

.nav-lang-item .lang-sub {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  margin-left: auto;
}

/* Mobile Language Grid */
.mobile-lang-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.mobile-lang-chip {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--text-sm);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  color: var(--c-text);
  text-decoration: none;
}

.mobile-lang-chip.is-active {
  border-color: var(--c-primary);
  background: rgba(79, 70, 229, 0.1);
  font-weight: var(--fw-bold);
  color: var(--c-primary);
}

/* Footer Language Selector */
.footer-lang-selector {
  margin-top: var(--sp-4);
}

.footer-lang-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgb(255 255 255 / 0.7);
  margin-bottom: var(--sp-2);
}

.footer-lang-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.footer-lang-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 4px 10px;
  font-size: var(--text-xs);
  color: rgb(255 255 255 / 0.85);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-lang-chip:hover {
  color: #ffffff;
  border-color: #38BDF8;
  background: rgba(56, 189, 248, 0.2);
}

.footer-lang-chip.is-active {
  color: #ffffff;
  border-color: #2563EB;
  background: #2563EB;
  font-weight: var(--fw-semi);
}

/* ── Print Elements (strictly hidden on screen display) ────────── */
.print-header,
.print-footer {
  display: none !important;
}

/* ── Print (overridden by print.css) ─────────────────────────────── */
@media print {
  .site-header, .site-footer, .ad-slot,
  .share-section, .nav-toggle, .mobile-menu,
  .related-tools, .btn:not(.btn--print),
  .filter-pills, .breadcrumbs { display: none !important; }
  body { background: #fff; }
  .word-chip { border-color: #ccc; }
  .print-header, .print-footer { display: block !important; }
}

/* ── Google Translate Seamless Integration & Banner Suppression ──── */
.goog-te-banner-frame,
.goog-te-banner-frame.skiptranslate,
iframe.goog-te-banner-frame,
.goog-te-balloon-frame,
#goog-gt-tt,
.goog-te-spinner-pos,
#google_translate_element {
  display: none !important;
  visibility: hidden !important;
}

body {
  top: 0px !important;
  position: static !important;
}

.goog-tooltip,
.goog-tooltip:hover {
  display: none !important;
}

.goog-text-highlight {
  background-color: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

.notranslate {
  translate: no;
}

/* ── Interactive Definition Modal & Flyout ────────────────────────── */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.modal-container {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalScaleIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: var(--sp-4) var(--sp-6);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  background: var(--c-surface);
}

.modal-title-group {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.modal-word-title {
  font-size: var(--text-2xl);
  font-weight: var(--fw-black);
  letter-spacing: 0.05em;
  color: var(--c-text);
  margin: 0;
  text-transform: uppercase;
}

.modal-header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.btn-icon-star,
.btn-icon-copy,
.modal-close-btn {
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text-muted);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.25rem;
  line-height: 1;
}

.btn-icon-star:hover,
.btn-icon-copy:hover,
.modal-close-btn:hover {
  background: var(--c-card);
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.btn-icon-star.is-starred {
  color: #f59e0b;
  border-color: #f59e0b;
  background: #fef3c7;
}

.btn-icon-star.is-starred svg {
  fill: #f59e0b;
}

.modal-body {
  padding: var(--sp-6);
  overflow-y: auto;
  flex: 1;
}

.modal-section {
  margin-bottom: var(--sp-5);
}

.modal-section:last-child {
  margin-bottom: 0;
}

.modal-section-title {
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-text-muted);
  margin-bottom: var(--sp-2);
}

.tiles-row {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.modal-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 48px;
  background: var(--c-surface);
  border: 2px solid var(--c-border);
  border-radius: var(--radius);
  font-weight: var(--fw-bold);
}

.modal-tile-char {
  font-size: var(--text-lg);
  line-height: 1;
  text-transform: uppercase;
}

.modal-tile-pts {
  font-size: 10px;
  color: var(--c-text-muted);
}

.definitions-box {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-sm);
  line-height: var(--lh-normal);
}

.definitions-box ol, .definitions-box ul {
  padding-left: var(--sp-4);
  margin: 0;
}

.definitions-box li {
  margin-bottom: var(--sp-2);
}

.definitions-box li:last-child {
  margin-bottom: 0;
}

.modal-chips-row {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.modal-footer {
  padding: var(--sp-3) var(--sp-6);
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--c-surface);
}

.modal-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-8);
  gap: var(--sp-3);
  color: var(--c-text-muted);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Starred Words Drawer & Floating Trigger ──────────────────────── */
.floating-starred-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--c-card);
  border: 2px solid #f59e0b;
  border-radius: var(--radius-full);
  padding: 10px 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.2);
  cursor: pointer;
  z-index: 990;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.floating-starred-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 20px -3px rgba(0,0,0,0.25);
}

.floating-starred-badge {
  background: #f59e0b;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
}

.starred-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 360px;
  background: var(--c-card);
  border-left: 1px solid var(--c-border);
  box-shadow: -10px 0 25px rgba(0,0,0,0.15);
  z-index: 10001;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.starred-drawer.is-hidden {
  transform: translateX(100%);
  pointer-events: none;
}

.starred-header {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--c-surface);
}

.starred-title-wrap {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.starred-title-wrap h4 {
  margin: 0;
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
}

.starred-header-btns {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.btn-starred-act {
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  padding: 3px 8px;
  cursor: pointer;
  color: var(--c-text-muted);
}

.btn-starred-act:hover {
  color: var(--c-text);
  border-color: var(--c-text);
}

.btn-starred-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--c-text-muted);
  line-height: 1;
}

.starred-list {
  padding: var(--sp-4);
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.starred-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--sp-2) var(--sp-3);
  font-weight: var(--fw-semi);
}

.starred-item-del {
  background: transparent;
  border: none;
  color: var(--c-text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}

.starred-item-del:hover {
  color: #ef4444;
  background: #fee2e2;
}

.starred-empty {
  color: var(--c-text-muted);
  font-size: var(--text-sm);
  text-align: center;
  margin-top: var(--sp-8);
  line-height: var(--lh-relaxed);
}

/* ── Board Multiplier Dynamic Badges ──────────────────────────────── */
.multiplier-tile.is-dl {
  border-color: #3b82f6 !important;
  background: #eff6ff !important;
}
.multiplier-tile.is-dl .js-tile-badge {
  display: block !important;
  background: #3b82f6 !important;
  color: #fff !important;
}

.multiplier-tile.is-tl {
  border-color: #8b5cf6 !important;
  background: #f5f3ff !important;
}
.multiplier-tile.is-tl .js-tile-badge {
  display: block !important;
  background: #8b5cf6 !important;
  color: #fff !important;
}

/* ── Mobile Sticky Anchor Ad ──────────────────────────────────────── */
.mobile-anchor-ad {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--c-card);
  border-top: 1px solid var(--c-border);
  box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.mobile-anchor-ad__header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2px 12px;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.mobile-anchor-ad__header .ad-label {
  font-size: 10px;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mobile-anchor-ad__close {
  background: transparent;
  border: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--c-text-muted);
  padding: 0 4px;
}

.mobile-anchor-ad__body {
  padding: 4px;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .mobile-anchor-ad {
    display: none;
  }
}

/* ── Sleep Calculator Component Styles ──────────────────────────── */
.sleep-calc-box {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--sp-6);
  max-width: 1040px;
  width: 100%;
  margin: var(--sp-6) auto 0;
  text-align: left;
}

@media (min-width: 768px) {
  .sleep-calc-box {
    padding: var(--sp-8);
  }
}

.sleep-mode-tabs {
  display: flex;
  background: var(--c-bg-alt);
  padding: 4px;
  border-radius: var(--radius-lg);
  gap: 4px;
  margin-bottom: var(--sp-6);
  border: 1px solid var(--c-border);
}

.sleep-mode-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--c-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.sleep-mode-tab:hover {
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.6);
}

.sleep-mode-tab.is-active {
  background: var(--c-card);
  color: var(--c-primary);
  font-weight: var(--fw-bold);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.sleep-input-section {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}

.sleep-time-selectors {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.sleep-select-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  flex: 1;
  min-width: 100px;
}

.sleep-select-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-bold);
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sleep-select {
  width: 100%;
  height: 52px;
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  background: var(--c-card);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 0 var(--sp-3);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sleep-select:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.sleep-ampm-toggle {
  display: flex;
  height: 52px;
  background: var(--c-bg-alt);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 3px;
  gap: 3px;
  min-width: 130px;
}

.sleep-ampm-btn {
  flex: 1;
  border: none;
  background: transparent;
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
  color: var(--c-text-muted);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sleep-ampm-btn.is-active {
  background: var(--c-primary);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(79, 70, 229, 0.3);
}

.sleep-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.sleep-onset-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  margin-bottom: var(--sp-4);
}

.sleep-results-container {
  margin-top: var(--sp-8);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-border);
  scroll-margin-top: calc(var(--nav-height, 64px) + 20px);
}

.sleep-results-header {
  margin-bottom: var(--sp-5);
  text-align: center;
}

.sleep-results-title {
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  margin-bottom: var(--sp-1);
}

.sleep-results-subtitle {
  font-size: var(--text-sm);
  color: var(--c-text-muted);
}

.sleep-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

@media (max-width: 960px) {
  .sleep-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-4);
  }
}

@media (max-width: 540px) {
  .sleep-cards-grid {
    grid-template-columns: 1fr;
  }
}

.sleep-card {
  background: var(--c-card);
  border: 2px solid var(--c-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-4) var(--sp-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.sleep-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
}

.sleep-card--best {
  border-color: #10B981;
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.05) 0%, var(--c-card) 40%);
}

.sleep-card--good {
  border-color: var(--c-primary);
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.05) 0%, var(--c-card) 40%);
}

.sleep-card--fair {
  border-color: #F59E0B;
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.05) 0%, var(--c-card) 40%);
}

.sleep-card--short {
  border-color: #94A3B8;
  background: linear-gradient(180deg, rgba(148, 163, 184, 0.05) 0%, var(--c-card) 40%);
}

.sleep-card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  font-weight: var(--fw-bold);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  margin-bottom: var(--sp-2);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.sleep-card--best .sleep-card__badge {
  background: #DCFCE7;
  color: #166534;
}

.sleep-card--good .sleep-card__badge {
  background: #EEF2FF;
  color: #4338CA;
}

.sleep-card--fair .sleep-card__badge {
  background: #FEF3C7;
  color: #92400E;
}

.sleep-card--short .sleep-card__badge {
  background: #F1F5F9;
  color: #475569;
}

.sleep-card__time {
  font-size: 1.85rem;
  font-weight: var(--fw-black);
  color: var(--c-text);
  line-height: 1.15;
  margin-bottom: var(--sp-1);
  letter-spacing: -0.02em;
}

.sleep-card__cycles {
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: var(--c-text);
  margin-bottom: 2px;
}

.sleep-card__duration {
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  font-weight: var(--fw-medium);
}

.sleep-card__onset {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  margin-top: var(--sp-3);
  padding-top: var(--sp-2);
  border-top: 1px dashed var(--c-border);
  width: 100%;
}

.sleep-card__day {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--fw-semibold);
  color: #4338CA;
  background: #EEF2FF;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-top: 4px;
}

.sleep-disclaimer-box {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-left: 4px solid #64748B;
  border-radius: var(--radius-lg);
  padding: var(--sp-4) var(--sp-5);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: #475569;
  margin-top: var(--sp-6);
}

@media (max-width: 640px) {
  .sleep-mode-tabs {
    flex-direction: column;
  }
  .sleep-time-selectors {
    flex-direction: column;
    align-items: stretch;
  }
  .sleep-ampm-toggle {
    width: 100%;
  }
  .sleep-actions {
    flex-direction: column;
  }
  .sleep-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Responsive Table Components ────────────────────────────────── */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--sp-6) 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  box-shadow: var(--shadow-sm);
}

.sleep-data-table,
.table-responsive table,
.article-content table,
table.table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--text-base);
}

.sleep-data-table caption,
.table-responsive table caption,
.article-content table caption,
table.table caption {
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: var(--c-text-muted);
  text-align: left;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-border);
}

.sleep-data-table th,
.table-responsive table th,
.article-content table th,
table.table th {
  background: #F8FAFC;
  color: #0F172A;
  font-weight: var(--fw-bold);
  padding: 14px 18px;
  border-bottom: 2px solid var(--c-border);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: left;
  vertical-align: middle;
}

.sleep-data-table td,
.table-responsive table td,
.article-content table td,
table.table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--c-border);
  color: #334155;
  line-height: 1.6;
  text-align: left;
  vertical-align: middle;
}

.sleep-data-table tbody tr:last-child td,
.table-responsive table tbody tr:last-child td,
.article-content table tbody tr:last-child td,
table.table tbody tr:last-child td {
  border-bottom: none;
}

.sleep-data-table tbody tr:nth-child(even),
.table-responsive table tbody tr:nth-child(even),
.article-content table tbody tr:nth-child(even),
table.table tbody tr:nth-child(even) {
  background: rgba(248, 250, 252, 0.6);
}

.sleep-data-table tbody tr:hover,
.table-responsive table tbody tr:hover,
.article-content table tbody tr:hover,
table.table tbody tr:hover {
  background: rgba(79, 70, 229, 0.04);
}

.sleep-data-table th[scope="row"],
.table-responsive table th[scope="row"],
.article-content table th[scope="row"],
table.table th[scope="row"] {
  font-weight: var(--fw-semibold);
  color: var(--c-text);
  background: transparent;
  text-transform: none;
  letter-spacing: normal;
  font-size: var(--text-base);
}

/* ── Dark Mode Component Overrides ──────────────────────────────── */
/* General text & headings */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: #F8FAFC;
}

[data-theme="dark"] p,
[data-theme="dark"] li,
[data-theme="dark"] dt,
[data-theme="dark"] dd {
  color: #CBD5E1;
}

[data-theme="dark"] a {
  color: #38BDF8;
}

[data-theme="dark"] a:hover {
  color: #7DD3FC;
}

/* Header & Navigation */
[data-theme="dark"] .site-header {
  background: rgba(15, 23, 42, 0.95);
  border-bottom-color: var(--c-border);
}

[data-theme="dark"] .nav-links a {
  color: #E2E8F0;
}

[data-theme="dark"] .nav-links a:hover {
  background: #1E293B;
  color: #38BDF8;
}

[data-theme="dark"] .nav-links a.active {
  color: #38BDF8;
  background: #082F49;
}

[data-theme="dark"] .nav-dropdown__trigger {
  color: #E2E8F0;
}

[data-theme="dark"] .nav-dropdown__trigger:hover,
[data-theme="dark"] .nav-dropdown.is-open .nav-dropdown__trigger,
[data-theme="dark"] .nav-dropdown:focus-within .nav-dropdown__trigger {
  background: #1E293B;
  color: #38BDF8;
}

[data-theme="dark"] .nav-dropdown__menu {
  background: #1E293B;
  border-color: #334155;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .nav-dropdown__menu a {
  color: #CBD5E1;
}

[data-theme="dark"] .nav-dropdown__menu a:hover,
[data-theme="dark"] .nav-dropdown__menu a:focus {
  background: #0F172A;
  color: #38BDF8;
}

[data-theme="dark"] .nav-toggle {
  color: #F8FAFC;
  border-color: #334155;
}

[data-theme="dark"] .mobile-menu {
  background: #0B0F19;
  border-left-color: #334155;
}

[data-theme="dark"] .mobile-menu__nav a {
  color: #F8FAFC;
  border-bottom-color: #1E293B;
}

[data-theme="dark"] .mobile-menu__nav a:hover {
  background: #1E293B;
  color: #38BDF8;
}

/* Hero Section */
[data-theme="dark"] .hero {
  background: linear-gradient(180deg, #0F172A 0%, #0B0F19 100%);
  border-bottom: 1px solid var(--c-border);
}

[data-theme="dark"] .hero__title {
  color: #F8FAFC;
}

[data-theme="dark"] .hero__subtitle {
  color: #94A3B8;
}

[data-theme="dark"] .hero__eyebrow {
  color: #38BDF8;
  background: #082F49;
  border-color: #0369A1;
}

/* Footer */
[data-theme="dark"] .footer {
  background: #020617;
  border-top-color: var(--c-border);
}

[data-theme="dark"] .footer-col__title {
  color: #F8FAFC;
}

[data-theme="dark"] .footer-col a {
  color: #94A3B8;
}

[data-theme="dark"] .footer-col a:hover {
  color: #38BDF8;
}

[data-theme="dark"] .footer-bottom {
  border-top-color: #1E293B;
  color: #64748B;
}

/* ── ALL FORM FIELDS & INPUTS (DARK MODE) ────────────────────────── */
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea,
[data-theme="dark"] .sleep-select,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="search"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] select,
[data-theme="dark"] textarea {
  background-color: #0F172A;
  color: #F8FAFC;
  border-color: #334155;
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus,
[data-theme="dark"] .sleep-select:focus,
[data-theme="dark"] input[type="text"]:focus,
[data-theme="dark"] input[type="search"]:focus,
[data-theme="dark"] input[type="number"]:focus,
[data-theme="dark"] input[type="email"]:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
  background-color: #0F172A;
  color: #F8FAFC;
  border-color: #818CF8;
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.25);
  outline: none;
}

[data-theme="dark"] .form-input::placeholder,
[data-theme="dark"] .form-textarea::placeholder,
[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: #64748B;
  opacity: 1;
}

[data-theme="dark"] select option,
[data-theme="dark"] .form-select option,
[data-theme="dark"] .sleep-select option,
[data-theme="dark"] optgroup {
  background-color: #1E293B;
  color: #F8FAFC;
}

[data-theme="dark"] .form-label,
[data-theme="dark"] label {
  color: #F8FAFC;
}

[data-theme="dark"] .form-hint,
[data-theme="dark"] .form-label .form-hint,
[data-theme="dark"] .sleep-select-label {
  color: #94A3B8;
}

[data-theme="dark"] .input-clear-btn {
  background: #1E293B;
  border-color: #334155;
  color: #94A3B8;
}

[data-theme="dark"] .input-clear-btn:hover {
  background: #EF4444;
  border-color: #EF4444;
  color: #FFFFFF;
}

/* ── ALL BUTTONS & CONTROLS (DARK MODE) ──────────────────────────── */
[data-theme="dark"] .btn--primary,
[data-theme="dark"] button[type="submit"].btn--primary {
  background-color: #6366F1;
  border-color: #6366F1;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--primary:hover,
[data-theme="dark"] button[type="submit"].btn--primary:hover {
  background-color: #4F46E5;
  border-color: #4F46E5;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--secondary {
  background-color: rgba(129, 140, 248, 0.12);
  border-color: #818CF8;
  color: #C7D2FE !important;
}

[data-theme="dark"] .btn--secondary:hover {
  background-color: rgba(129, 140, 248, 0.25);
  border-color: #A5B4FC;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--ghost {
  background-color: transparent;
  border-color: #334155;
  color: #CBD5E1 !important;
}

[data-theme="dark"] .btn--ghost:hover {
  background-color: #1E293B;
  border-color: #475569;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--success {
  background-color: #10B981;
  border-color: #10B981;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--success:hover {
  background-color: #059669;
  border-color: #059669;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--danger {
  background-color: #EF4444;
  border-color: #EF4444;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--danger:hover {
  background-color: #DC2626;
  border-color: #DC2626;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn--reset-lg {
  background-color: #1E293B;
  border-color: #334155;
  color: #CBD5E1;
}

[data-theme="dark"] .btn--reset-lg:hover {
  background-color: #EF4444;
  border-color: #EF4444;
  color: #FFFFFF;
}

/* Filter Pills */
[data-theme="dark"] .filter-pill {
  background-color: #1E293B;
  border-color: #334155;
  color: #CBD5E1;
}

[data-theme="dark"] .filter-pill:hover,
[data-theme="dark"] .filter-pill.active {
  background-color: #6366F1;
  border-color: #6366F1;
  color: #FFFFFF !important;
}

/* Badges & Example Chips */
[data-theme="dark"] .badge,
[data-theme="dark"] .badge--primary,
[data-theme="dark"] .anagram-example-chip {
  background-color: #1E1B4B;
  border-color: #4338CA;
  color: #C7D2FE;
}

[data-theme="dark"] .badge:hover,
[data-theme="dark"] .badge--primary:hover,
[data-theme="dark"] .anagram-example-chip:hover {
  background-color: #312E81;
  border-color: #6366F1;
  color: #FFFFFF;
}

/* Word Chips & Results */
[data-theme="dark"] .word-chip {
  background-color: #1E293B;
  border-color: #334155;
  color: #F8FAFC;
}

[data-theme="dark"] .word-chip:hover {
  background-color: #2D3B55;
  border-color: var(--c-primary);
  color: #FFFFFF;
}

[data-theme="dark"] .word-chip__score {
  background-color: #0F172A;
  color: #A5B4FC;
}

[data-theme="dark"] .word-length-heading {
  background-color: #1E1B4B;
  border-left-color: #818CF8;
  color: #F8FAFC;
}

/* Sleep Calculator Components */
[data-theme="dark"] .sleep-mode-tabs {
  background-color: #0F172A;
  border-color: #334155;
}

[data-theme="dark"] .sleep-mode-tab {
  color: #94A3B8;
}

[data-theme="dark"] .sleep-mode-tab:hover {
  color: #F8FAFC;
  background-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .sleep-mode-tab.is-active {
  background-color: #1E293B;
  color: #818CF8 !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .sleep-ampm-toggle {
  background-color: #0F172A;
  border-color: #334155;
}

[data-theme="dark"] .sleep-ampm-btn {
  color: #94A3B8;
}

[data-theme="dark"] .sleep-ampm-btn:hover {
  color: #F8FAFC;
  background-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .sleep-ampm-btn.is-active {
  background-color: #6366F1;
  color: #FFFFFF !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .sleep-card {
  background: #1E293B;
}

[data-theme="dark"] .sleep-card--best {
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.12) 0%, #1E293B 40%);
}

[data-theme="dark"] .sleep-card--good {
  background: linear-gradient(180deg, rgba(129, 140, 248, 0.12) 0%, #1E293B 40%);
}

[data-theme="dark"] .sleep-card--fair {
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.12) 0%, #1E293B 40%);
}

[data-theme="dark"] .sleep-card--short {
  background: linear-gradient(180deg, rgba(148, 163, 184, 0.12) 0%, #1E293B 40%);
}

[data-theme="dark"] .sleep-card__day {
  background: #1E1B4B;
  color: #A5B4FC;
}

[data-theme="dark"] .sleep-card__time {
  color: #F8FAFC;
}

[data-theme="dark"] .sleep-card__cycles {
  color: #CBD5E1;
}

[data-theme="dark"] .sleep-card__duration {
  color: #94A3B8;
}

[data-theme="dark"] .sleep-card__onset {
  color: #64748B;
}

[data-theme="dark"] .sleep-disclaimer-box {
  background: #1E293B;
  border-color: #334155;
  border-left-color: #818CF8;
  color: #94A3B8;
}

[data-theme="dark"] .sleep-data-table th,
[data-theme="dark"] .table-responsive table th,
[data-theme="dark"] .article-content table th,
[data-theme="dark"] table.table th {
  background: #1E293B;
  color: #F8FAFC;
  border-bottom-color: var(--c-border);
}

[data-theme="dark"] .sleep-data-table td,
[data-theme="dark"] .table-responsive table td,
[data-theme="dark"] .article-content table td,
[data-theme="dark"] table.table td {
  color: #CBD5E1;
  border-bottom-color: var(--c-border);
}

[data-theme="dark"] .sleep-data-table tbody tr:nth-child(even),
[data-theme="dark"] .table-responsive table tbody tr:nth-child(even),
[data-theme="dark"] .article-content table tbody tr:nth-child(even),
[data-theme="dark"] table.table tbody tr:nth-child(even) {
  background: rgba(30, 41, 59, 0.4);
}

[data-theme="dark"] .sleep-data-table tbody tr:hover,
[data-theme="dark"] .table-responsive table tbody tr:hover,
[data-theme="dark"] .article-content table tbody tr:hover,
[data-theme="dark"] table.table tbody tr:hover {
  background: rgba(129, 140, 248, 0.08);
}

/* Modals & Starred Words */
[data-theme="dark"] .modal__dialog {
  background: #1E293B;
  border-color: #334155;
  color: #F8FAFC;
}

[data-theme="dark"] .modal-header {
  border-bottom-color: #334155;
}

[data-theme="dark"] .modal-title {
  color: #F8FAFC;
}

[data-theme="dark"] .modal-footer {
  border-top-color: #334155;
}

[data-theme="dark"] .btn-icon-star,
[data-theme="dark"] .btn-icon-copy,
[data-theme="dark"] .modal-close-btn {
  background-color: #0F172A;
  border-color: #334155;
  color: #CBD5E1;
}

[data-theme="dark"] .btn-icon-star:hover,
[data-theme="dark"] .btn-icon-copy:hover,
[data-theme="dark"] .modal-close-btn:hover {
  background-color: #1E293B;
  color: #818CF8;
  border-color: #818CF8;
}

[data-theme="dark"] .btn-icon-star.is-starred {
  background-color: rgba(245, 158, 11, 0.2);
  color: #FBBF24;
  border-color: #FBBF24;
}

[data-theme="dark"] .btn-icon-star.is-starred svg {
  fill: #FBBF24;
}

[data-theme="dark"] .starred-drawer {
  background: #1E293B;
  border-left-color: #334155;
  color: #F8FAFC;
}

[data-theme="dark"] .starred-drawer-header {
  border-bottom-color: #334155;
}

[data-theme="dark"] .btn-starred-act {
  background-color: #0F172A;
  border-color: #334155;
  color: #CBD5E1;
}

[data-theme="dark"] .btn-starred-act:hover {
  background-color: #1E293B;
  color: #FFFFFF;
  border-color: #818CF8;
}

[data-theme="dark"] .btn-starred-close {
  color: #94A3B8;
}

[data-theme="dark"] .btn-starred-close:hover {
  color: #F8FAFC;
}

/* FAQ Accordions */
[data-theme="dark"] .faq-item {
  background: #1E293B;
  border-color: #334155;
}

[data-theme="dark"] .faq-question {
  color: #F8FAFC;
}

[data-theme="dark"] .faq-question:hover {
  color: #818CF8;
}

[data-theme="dark"] .faq-icon {
  color: #94A3B8;
}

[data-theme="dark"] .faq-item.is-open .faq-icon {
  color: #818CF8;
}

[data-theme="dark"] .faq-answer {
  color: #CBD5E1;
}

/* Cards, Step Boxes & Tool Guide Content */
[data-theme="dark"] .card {
  background: #1E293B;
  border-color: #334155;
  color: #CBD5E1;
}

[data-theme="dark"] .card h2,
[data-theme="dark"] .card h3,
[data-theme="dark"] .card h4 {
  color: #F8FAFC !important;
}

[data-theme="dark"] .card p {
  color: #CBD5E1 !important;
}

[data-theme="dark"] .card--tool:hover {
  background: #243049;
  border-color: var(--c-primary);
}

/* ── Content & Guide Typography in Dark Mode ────────────────────── */
[data-theme="dark"] .article-content {
  color: #CBD5E1;
}

[data-theme="dark"] .article-content h1,
[data-theme="dark"] .article-content h2,
[data-theme="dark"] .article-content h3,
[data-theme="dark"] .article-content h4,
[data-theme="dark"] .article-content h5,
[data-theme="dark"] .article-content h6 {
  color: #F8FAFC !important;
}

[data-theme="dark"] .article-content p,
[data-theme="dark"] .article-content li,
[data-theme="dark"] .article-content ul,
[data-theme="dark"] .article-content ol {
  color: #CBD5E1 !important;
}

[data-theme="dark"] .article-content strong {
  color: #F8FAFC !important;
}

[data-theme="dark"] .article-content blockquote {
  background: #131B2E;
  border-left-color: #818CF8;
  color: #E2E8F0;
}

[data-theme="dark"] .instruction-card {
  background: #131B2E;
  border-color: #334155;
  border-left-color: #818CF8;
}

[data-theme="dark"] .instruction-card h2,
[data-theme="dark"] .instruction-card h3 {
  color: #F8FAFC !important;
}

[data-theme="dark"] .instruction-card p {
  color: #CBD5E1 !important;
}

[data-theme="dark"] .instruction-step-box {
  background: #1E293B;
  border-color: #334155;
}

[data-theme="dark"] .instruction-step-box:hover {
  border-color: #818CF8;
  background: #243049;
}

[data-theme="dark"] .instruction-step-box strong {
  color: #A5B4FC !important;
}

[data-theme="dark"] .instruction-step-box span {
  color: #E2E8F0 !important;
}

[data-theme="dark"] .instruction-step-box code {
  background: #0F172A;
  color: #38BDF8 !important;
  border-color: #334155;
}

[data-theme="dark"] .benefit-card {
  background: #1E293B;
  border-color: #334155;
}

[data-theme="dark"] .benefit-card:hover {
  border-color: #818CF8;
  background: #243049;
}

[data-theme="dark"] .benefit-card h3,
[data-theme="dark"] .benefit-card h4 {
  color: #A5B4FC !important;
}

[data-theme="dark"] .benefit-card p {
  color: #CBD5E1 !important;
}

[data-theme="dark"] .benefit-card code {
  background: #0F172A;
  color: #38BDF8 !important;
  border-color: #334155;
}

[data-theme="dark"] code {
  background: #0F172A;
  color: #38BDF8;
  border: 1px solid #334155;
}

[data-theme="dark"] .breadcrumbs {
  color: #94A3B8;
}

[data-theme="dark"] .breadcrumbs a {
  color: #CBD5E1;
}

[data-theme="dark"] .breadcrumbs a:hover {
  color: #818CF8;
}

[data-theme="dark"] .related-tools {
  background: #131B2E;
  border-color: #334155;
}

[data-theme="dark"] .results-count {
  color: #94A3B8;
}

[data-theme="dark"] .results-query {
  color: #818CF8;
}

/* Pagination */
[data-theme="dark"] .pagination__btn {
  background-color: #1E293B;
  border-color: #334155;
  color: #CBD5E1;
}

[data-theme="dark"] .pagination__btn:hover {
  background-color: #6366F1;
  border-color: #6366F1;
  color: #FFFFFF !important;
}

[data-theme="dark"] .pagination__btn.active {
  background-color: #6366F1;
  border-color: #6366F1;
  color: #FFFFFF !important;
}

/* ── Theme Toggle Button ────────────────────────────────────────── */
.nav-theme-item {
  display: flex;
  align-items: center;
  margin-left: var(--sp-2);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
  position: relative;
}

.theme-toggle-btn:hover {
  background: var(--c-bg-alt);
  border-color: var(--c-primary);
  color: var(--c-primary);
  transform: scale(1.05);
}

.theme-toggle-btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

.theme-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Light mode (default): show moon, hide sun */
.theme-icon--sun {
  display: none;
}
.theme-icon--moon {
  display: block;
}

/* Dark mode: show sun, hide moon */
[data-theme="dark"] .theme-icon--sun {
  display: block;
  color: #FBBF24;
}
[data-theme="dark"] .theme-icon--moon {
  display: none;
}

.theme-toggle-mobile {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  background: var(--c-bg-alt);
  color: var(--c-text);
  font-weight: var(--fw-medium);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.theme-toggle-mobile:hover {
  background: var(--c-surface);
  color: var(--c-primary);
}