/* =========================================================
   RANDOM WORD GENERATOR — SHARED STYLESHEET (provisional draft)
   Locked design system per BLUEPRINT.md Section 5
   ========================================================= */

/* ---------- 1. VARIABLES ---------- */
:root {
  --color-primary: #6C5CE7;
  --color-primary-dark: #5546C4;
  --color-secondary: #00B894;
  --color-accent: #FDCB6E;
  --color-bg: #FAFAFC;
  --color-surface: #FFFFFF;
  --color-border: #E4E4EC;
  --color-text: #22223B;
  --color-text-muted: #5A5A72;
  --color-success: #00B894;
  --color-error: #E74C3C;

  --font-display: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  --fs-xs: 12px; --fs-sm: 14px; --fs-base: 16px; --fs-md: 18px;
  --fs-lg: 22px; --fs-xl: 28px; --fs-2xl: 36px; --fs-3xl: 48px;

  --fw-regular: 400; --fw-medium: 500; --fw-semibold: 600; --fw-bold: 700;
  --line-height-tight: 1.2; --line-height-base: 1.6;
  --letter-spacing-tight: -0.02em;

  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px; --space-9: 96px;

  --radius-sm: 6px; --radius-md: 12px; --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(34,34,59,0.08);
  --shadow-md: 0 4px 16px rgba(34,34,59,0.10);
  --shadow-lg: 0 8px 32px rgba(34,34,59,0.14);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* ---------- 1b. DARK MODE ---------- */
:root[data-theme="dark"] {
  --color-primary: #8B7CF6;
  --color-primary-dark: #A79BF9;
  --color-secondary: #00D9A3;
  --color-accent: #FDCB6E;
  --color-bg: #16161F;
  --color-surface: #1E1E2A;
  --color-border: #33334A;
  --color-text: #EDEDF5;
  --color-text-muted: #A9A9C0;
  --color-success: #00D9A3;
  --color-error: #FF6B6B;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.35);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.45);
}

body {
  transition: background var(--transition-base), color var(--transition-base);
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3 { font-family: var(--font-display); font-weight: var(--fw-semibold); line-height: var(--line-height-tight); letter-spacing: var(--letter-spacing-tight); }

/* ---------- 3. LAYOUT ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-5); }
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--color-primary); color: #fff;
  padding: var(--space-3) var(--space-4); z-index: 100;
  border-radius: var(--radius-sm);
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

/* ---------- 4. COMPONENTS ---------- */

/* Header / Nav */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) 0;
}
.logo {
  font-family: var(--font-display); font-weight: var(--fw-bold);
  font-size: var(--fs-lg); color: var(--color-primary);
}
.nav-links {
  display: flex; gap: var(--space-5); align-items: center;
}
.nav-links a {
  font-weight: var(--fw-medium); font-size: var(--fs-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.hamburger { display: none; }

/* Theme toggle */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  flex-shrink: 0;
}
.theme-toggle:hover { transform: rotate(15deg); border-color: var(--color-primary); }
.theme-toggle svg { width: 20px; height: 20px; display: block; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* Breadcrumb */
.breadcrumb {
  font-size: var(--fs-sm); color: var(--color-text-muted);
  padding: var(--space-4) 0;
}
.breadcrumb a { color: var(--color-primary); }

/* Hero */
.hero {
  padding: var(--space-8) 0;
  text-align: center;
}
.hero h1 {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-4);
}
.hero p.subtext {
  font-size: var(--fs-md); color: var(--color-text-muted);
  max-width: 600px; margin: 0 auto var(--space-6);
}

/* Tool widget */
.tool-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 560px; margin: 0 auto;
  padding: var(--space-7);
}
.tool-output {
  font-family: var(--font-display); font-weight: var(--fw-bold);
  font-size: var(--fs-2xl); color: var(--color-primary);
  min-height: 56px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-5);
  word-break: break-word;
}

/* Tool options (pill toggles) */
.tool-options {
  display: flex; flex-wrap: wrap;
  gap: var(--space-5);
  justify-content: center;
  margin-bottom: var(--space-6);
}
.option-group {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--space-2);
}
.option-label {
  font-size: var(--fs-xs); font-weight: var(--fw-semibold);
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-muted);
}
.pill-group {
  display: flex; gap: var(--space-2);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-1);
}
.pill {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm); font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.pill:hover { color: var(--color-text); }
.pill.active {
  background: var(--color-primary);
  color: #fff;
}

/* ---------- RandomlyFun-style homepage components ---------- */

/* Hero stat chips */
.stat-chips {
  display: flex; flex-wrap: wrap; gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-5);
}
.stat-chip {
  display: flex; align-items: baseline; gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
.stat-chip strong {
  font-family: var(--font-display);
  color: var(--color-primary);
  font-size: var(--fs-md);
}

/* Category badge/chip */
.category-badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  font-size: var(--fs-xs); font-weight: var(--fw-semibold);
  padding: 2px var(--space-3);
  border-radius: 999px;
  background: rgba(108, 92, 231, 0.1);
  color: var(--color-primary);
  text-transform: uppercase; letter-spacing: 0.03em;
}
:root[data-theme="dark"] .category-badge { background: rgba(139, 124, 246, 0.15); }

/* Tool count badge */
.tool-count {
  font-size: var(--fs-sm); color: var(--color-text-muted);
  font-weight: var(--fw-medium);
}

/* Category filter tabs */
.category-tabs {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  justify-content: center;
  margin: var(--space-6) 0;
}
.category-tab {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--fs-sm); font-weight: var(--fw-medium);
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.category-tab:hover { border-color: var(--color-primary); color: var(--color-text); }
.category-tab.active {
  background: var(--color-primary); border-color: var(--color-primary);
  color: #fff;
}

/* Staff picks featured cards */
.featured-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}
@media (max-width: 900px) { .featured-grid { grid-template-columns: 1fr; } }
.featured-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex; flex-direction: column; gap: var(--space-3);
}
.featured-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.featured-card .emoji { font-size: 32px; }
.featured-card h3 { font-size: var(--fs-lg); }
.featured-card p { color: var(--color-text-muted); font-size: var(--fs-sm); flex-grow: 1; }
.featured-card .btn { align-self: flex-start; margin-top: var(--space-2); }

.featured-grid-secondary {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
@media (max-width: 900px) { .featured-grid-secondary { grid-template-columns: 1fr; } }
.featured-card-sm {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex; align-items: center; gap: var(--space-3);
  transition: border-color var(--transition-fast);
}
.featured-card-sm:hover { border-color: var(--color-primary); }
.featured-card-sm .emoji { font-size: 24px; flex-shrink: 0; }
.featured-card-sm h4 { font-size: var(--fs-base); margin-bottom: 2px; }
.featured-card-sm p { font-size: var(--fs-xs); color: var(--color-text-muted); }

/* Tool grid card (compact, icon + name + description) */
.tool-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}
.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex; flex-direction: column; gap: var(--space-2);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}
.tool-card:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.tool-card .emoji { font-size: 22px; }
.tool-card h4 { font-size: var(--fs-base); }
.tool-card p { font-size: var(--fs-xs); color: var(--color-text-muted); line-height: 1.4; }

/* Category section (grouped grid on homepage) */
.category-section { margin-bottom: var(--space-8); }
.category-section-header {
  display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap; gap: var(--space-2);
  margin-bottom: var(--space-2);
}
.category-section-header h2 {
  font-size: var(--fs-xl);
  display: flex; align-items: center; gap: var(--space-2);
}
.category-section-header a {
  font-size: var(--fs-sm); font-weight: var(--fw-semibold);
  color: var(--color-primary);
}
.category-section-desc {
  color: var(--color-text-muted); font-size: var(--fs-sm);
  max-width: 700px; margin-bottom: var(--space-5);
}

/* Category tiles (browse by category) */
.category-tile-grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}
@media (max-width: 900px) { .category-tile-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .category-tile-grid { grid-template-columns: 1fr; } }
.category-tile {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.category-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.category-tile .emoji { font-size: 36px; }
.category-tile h3 { font-size: var(--fs-md); }
.category-tile span { font-size: var(--fs-xs); color: var(--color-text-muted); }

/* Why-section long copy */
.prose-section p { margin-bottom: var(--space-4); color: var(--color-text-muted); line-height: var(--line-height-base); }
.prose-section p:last-child { margin-bottom: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold); font-size: var(--fs-base);
  transition: background var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.btn-secondary {
  background: transparent; color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-secondary:hover { background: rgba(108,92,231,0.06); }

/* Cards */
.card-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin: var(--space-7) 0;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-md); }
.card h3 { font-size: var(--fs-md); margin-bottom: var(--space-2); }
.card p { color: var(--color-text-muted); font-size: var(--fs-sm); }

/* Sections */
.section { padding: var(--space-8) 0; }
.section-title {
  font-size: var(--fs-2xl); text-align: center; margin-bottom: var(--space-6);
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5) 0;
}
.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; text-align: left;
  font-weight: var(--fw-semibold); font-size: var(--fs-md);
}
.faq-answer {
  max-height: 0; overflow: hidden;
  color: var(--color-text-muted);
  transition: max-height var(--transition-base);
}
.faq-item.open .faq-answer { max-height: 300px; margin-top: var(--space-3); }
.faq-icon { transition: transform var(--transition-fast); }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* CTA */
.cta-section {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  text-align: center;
  margin: var(--space-8) 0;
}
.cta-section h2 { color: #fff; margin-bottom: var(--space-3); }
.cta-actions { display: flex; gap: var(--space-4); justify-content: center; margin-top: var(--space-5); }
.cta-section .btn-secondary { color: #fff; border-color: #fff; }
.cta-section .btn-secondary:hover { background: rgba(255,255,255,0.12); }

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0 var(--space-6);
  margin-top: var(--space-8);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.footer-grid h4 { font-size: var(--fs-sm); margin-bottom: var(--space-3); color: var(--color-text); }
.footer-grid a, .footer-grid p {
  font-size: var(--fs-sm); color: var(--color-text-muted);
  display: block; margin-bottom: var(--space-2);
}
.footer-grid a:hover { color: var(--color-primary); }
.footer-bottom {
  text-align: center; font-size: var(--fs-xs); color: var(--color-text-muted);
  padding-top: var(--space-5); border-top: 1px solid var(--color-border);
}

/* ---------- 5. UTILITIES ---------- */
.text-center { text-align: center; }
.mt-6 { margin-top: var(--space-6); }
.mb-6 { margin-bottom: var(--space-6); }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ---------- 6. RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger {
    display: flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
  }
  .hero h1 { font-size: var(--fs-2xl); }
  .card-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-actions { flex-direction: column; }
}

/* ---------- 7. ACCESSIBILITY ---------- */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}