/* ============================================================
   DHIME PICKS — Design System
   Premium dark glassmorphic landing + warm child page themes
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Landing page (dark theme) */
  --bg-primary: #06060e;
  --bg-secondary: #0d0d1a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(255, 255, 255, 0.15);

  --text-primary: #f0f0f5;
  --text-secondary: #8a8a9a;
  --text-muted: #55556a;

  --accent-primary: #7c3aed;
  --accent-secondary: #a855f7;
  --accent-pink: #ec4899;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-orange: #f97316;
  --accent-green: #10b981;
  --accent-yellow: #eab308;

  --gradient-hero: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #f97316 100%);
  --gradient-search: linear-gradient(135deg, #7c3aed, #3b82f6);
  --gradient-card-border: linear-gradient(135deg, rgba(124,58,237,0.3), rgba(236,72,153,0.3));

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(124,58,237,0.3);
  --shadow-glow-pink: 0 0 30px rgba(236,72,153,0.2);

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ---------- Background Gradient Mesh ---------- */
body.landing-page::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(124,58,237,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 10%, rgba(236,72,153,0.08) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 50% 80%, rgba(59,130,246,0.06) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 90% 70%, rgba(249,115,22,0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  transform: translateZ(0);
  will-change: transform;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* ---------- HERO SECTION ---------- */
.hero {
  text-align: center;
  padding: 5rem 1rem 3rem;
  position: relative;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
  animation: fadeInDown 0.6s ease;
}

.hero__badge span {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1rem;
  animation: fadeInUp 0.7s ease;
}

.hero__title .gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease;
}

/* ---------- SEARCH BAR ---------- */
.search-wrapper {
  max-width: 640px;
  margin: 0 auto 3rem;
  position: relative;
  animation: fadeInUp 0.9s ease;
}

.search-bar {
  display: flex;
  align-items: center;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.5rem 0.25rem 1.5rem;
  backdrop-filter: blur(20px);
  transition: var(--transition-base);
}

.search-bar:focus-within {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow), 0 0 0 3px rgba(124,58,237,0.1);
}

.search-bar__icon {
  color: var(--text-muted);
  font-size: 1.2rem;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.search-bar__input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  padding: 0.85rem 0;
}

.search-bar__input::placeholder {
  color: var(--text-muted);
}

.search-bar__clear {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0.5rem;
  display: none;
  transition: var(--transition-fast);
}

.search-bar__clear.visible {
  display: flex;
}

.search-bar__clear:hover {
  color: var(--text-primary);
}

.search-results-count {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: -1.5rem;
  margin-bottom: 1.5rem;
  min-height: 1.2rem;
  transition: var(--transition-fast);
}

/* ---------- CATEGORY CHIPS ---------- */
.category-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  animation: fadeInUp 1s ease;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  backdrop-filter: blur(10px);
  user-select: none;
}

.chip:hover {
  border-color: var(--border-glass-hover);
  background: var(--bg-card-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.chip.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
  box-shadow: 0 0 20px rgba(124,58,237,0.3);
}

.chip__icon {
  font-size: 1rem;
}

/* ---------- SECTION HEADERS ---------- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.section-header__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.section-header__subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- USE CASE CARD GRID ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.use-case-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), background var(--transition-slow), border-color var(--transition-slow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  text-decoration: none;
  display: block;
  transform: translateZ(0);
  will-change: transform, box-shadow;
}

.use-case-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: var(--gradient-card-border);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: var(--transition-slow);
}

.use-case-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-md);
}

.use-case-card:hover::before {
  opacity: 1;
}

.use-case-card__icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.use-case-card__category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.6rem;
  background: rgba(124,58,237,0.15);
  color: var(--accent-secondary);
}

.use-case-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.use-case-card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.use-case-card__arrow {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--bg-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: var(--transition-base);
}

.use-case-card:hover .use-case-card__arrow {
  background: var(--accent-primary);
  color: #fff;
  transform: translateX(3px);
}

.use-case-card__badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-pink));
  color: #fff;
}

/* ---------- NO RESULTS ---------- */
.no-results {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.no-results__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.no-results__title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.no-results__text {
  font-size: 0.9rem;
}

/* ---------- STATS BAR ---------- */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3.5rem;
  animation: fadeInUp 1.1s ease;
}

.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--border-glass);
  padding: 2.5rem 0;
  margin-top: 3rem;
  text-align: center;
}

.footer__brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.footer__brand .gradient-text {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__text {
  color: var(--text-muted);
  font-size: 0.8rem;
  max-width: 500px;
  margin: 0 auto 1rem;
  line-height: 1.6;
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__link {
  color: var(--text-secondary);
  font-size: 0.8rem;
  transition: var(--transition-fast);
}

.footer__link:hover {
  color: var(--accent-secondary);
}

/* ---------- BACK LINK (child pages) ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  transition: var(--transition-base);
  margin-bottom: 1.5rem;
}

.back-link:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow);
}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(124,58,237,0.2); }
  50% { box-shadow: 0 0 35px rgba(124,58,237,0.4); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Card stagger animation */
.use-case-card {
  animation: fadeInUp 0.5s ease both;
}

.use-case-card:nth-child(1) { animation-delay: 0.05s; }
.use-case-card:nth-child(2) { animation-delay: 0.1s; }
.use-case-card:nth-child(3) { animation-delay: 0.15s; }
.use-case-card:nth-child(4) { animation-delay: 0.2s; }
.use-case-card:nth-child(5) { animation-delay: 0.25s; }
.use-case-card:nth-child(6) { animation-delay: 0.3s; }
.use-case-card:nth-child(7) { animation-delay: 0.35s; }
.use-case-card:nth-child(8) { animation-delay: 0.4s; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .hero {
    padding: 3rem 0.5rem 2rem;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
  }

  .stats-bar {
    gap: 1.5rem;
  }

  .stat__number {
    font-size: 1.5rem;
  }

  .category-chips {
    gap: 0.4rem;
  }

  .chip {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }

  /* Reduce blur intensity on mobile to improve scroll frame rates */
  .use-case-card, .search-bar, .chip, .hero__badge {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero__title {
    font-size: 2rem;
  }

  .search-bar {
    padding: 0.2rem 0.4rem 0.2rem 1rem;
  }
}

/* ============================================================
   CHILD PAGE THEME OVERRIDES
   Each child page sets --page-accent and --page-bg via inline style
   ============================================================ */

/* Child page body style */
body.child-page {
  --bg-primary: var(--page-bg, #fef7e8);
  --text-primary: var(--page-text, #1e2a2f);
  --text-secondary: var(--page-text-secondary, #4a5b5f);
  background: var(--bg-primary);
  color: var(--text-primary);
}

body.child-page::before {
  display: none;
}

/* Child page container */
.child-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Child page hero */
.child-hero {
  background: var(--page-gradient, linear-gradient(135deg, #7c3aed, #ec4899));
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 2.5rem;
  color: white;
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.child-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.child-hero h1 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
  position: relative;
}

.child-hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
  opacity: 0.95;
  position: relative;
}

/* Child page section */
.child-section {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  margin-bottom: 2.2rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.child-section h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  border-left: 6px solid var(--page-accent, #7c3aed);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
  color: var(--page-heading, #1e3b3f);
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.2);
}