:root {
  /* Palette Emas & Putih/Krem - Serasi Halaman Utama INTISATU */
  --color-gold: #D4AF37;
  --color-dark-gold: #B8941F;
  --color-green: #2D5016;
  --color-light-green: #4A7C59;
  --color-medium-brown: #5D4E37;
  --color-light-brown: #8B7355;
  --color-cream: #F5F5DC;
  --color-white: #FFFFFF;

  /* Variabel Tema Terang (Light Mode) */
  --bg-primary: #F9F7F3;
  --bg-secondary: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.92);
  --text-primary: #2E2B28;
  --text-secondary: #6B6257;
  --text-muted: #8F8478;
  --border-color: rgba(212, 175, 55, 0.25);
  --border-gold-focus: rgba(212, 175, 55, 0.85);
  --card-border-hover: rgba(212, 175, 55, 0.55);
  --shadow-soft: 0 10px 30px rgba(93, 78, 55, 0.06);
  --shadow-hover: 0 18px 42px rgba(212, 175, 55, 0.18);
  --tag-bg: rgba(212, 175, 55, 0.12);
  --tag-color: #5D4E37;
  --input-bg: #FFFFFF;

  --font-primary: 'Playfair Display', Georgia, serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Variabel Tema Gelap (Dark Mode) */
[data-theme="dark"] {
  --bg-primary: #151412;
  --bg-secondary: #1F1D1A;
  --bg-card: rgba(31, 29, 26, 0.9);
  --text-primary: #F2EFE9;
  --text-secondary: #C8BFB5;
  --text-muted: #8E8478;
  --border-color: rgba(212, 175, 55, 0.22);
  --border-gold-focus: rgba(212, 175, 55, 0.9);
  --card-border-hover: rgba(212, 175, 55, 0.65);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 20px 45px rgba(212, 175, 55, 0.22);
  --tag-bg: rgba(212, 175, 55, 0.16);
  --tag-color: #E5D5A0;
  --input-bg: #1F1D1A;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-secondary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.4s ease, color 0.4s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* Radial aura subtle glow di background */
.bg-aura {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 700px;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(212, 175, 55, 0.12) 0%, transparent 65%),
    radial-gradient(circle at 15% 30%, rgba(45, 80, 22, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 85% 25%, rgba(184, 148, 31, 0.06) 0%, transparent 50%);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
  width: 100%;
}

/* Top Navigation Bar */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(249, 247, 243, 0.85);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

[data-theme="dark"] .top-nav {
  background: rgba(21, 20, 18, 0.88);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: var(--transition-smooth);
}

.nav-back-link:hover {
  color: var(--color-gold);
  border-color: var(--color-gold);
  transform: translateX(-3px);
}

.nav-brand-title {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 1.5px;
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-soft);
}

.theme-toggle:hover {
  transform: scale(1.08);
  border-color: var(--color-gold);
  box-shadow: 0 4px 16px rgba(212, 175, 55, 0.25);
}

.theme-toggle .sun-icon { display: block; }
.theme-toggle .moon-icon { display: none; }

[data-theme="dark"] .theme-toggle .sun-icon { display: none; }
[data-theme="dark"] .theme-toggle .moon-icon { display: block; }

/* Hero Section (Center Alignment) */
.catalog-hero {
  padding: 3.75rem 0 1.25rem;
  text-align: center;
  position: relative;
  display: flex;
  justify-content: center;
  width: 100%;
}

.hero-header-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  margin: 0 auto;
}

.hero-eyebrow {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-gold);
  font-weight: 600;
  margin: 0 auto 0.85rem;
  width: 100%;
}

.hero-title {
  font-family: var(--font-primary);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 1.5px;
  margin: 0 auto 0.75rem;
  position: relative;
  display: inline-block;
  text-align: center;
}

.hero-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.hero-subtitle {
  font-family: var(--font-primary);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-style: italic;
  color: var(--text-secondary);
  margin: 0 auto 0.5rem;
  max-width: 680px;
  text-align: center;
  display: block;
  width: 100%;
}

/* Sticky Search & Filter Bar (Two-Tier Sticky: Menempel Tepat di Bawah Navbar saat Scroll) */
.sticky-filter-wrapper {
  position: sticky;
  top: 72px;
  z-index: 90;
  background: rgba(249, 247, 243, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 1.25rem 0 1rem;
  border-bottom: 1px solid transparent;
  transition: padding 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

[data-theme="dark"] .sticky-filter-wrapper {
  background: rgba(21, 20, 18, 0.96);
}

/* Saat di-scroll (is-stuck): super ramping, HANYA search bar (tagging disembunyikan agar tidak memakan layar) */
.sticky-filter-wrapper.is-stuck {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border-color);
  background: rgba(249, 247, 243, 0.98);
  box-shadow: 0 8px 24px rgba(93, 78, 55, 0.07);
}

.sticky-filter-wrapper.is-stuck .tag-filters {
  display: none !important;
}

.sticky-filter-wrapper.is-stuck .search-box-wrapper {
  padding: 0.25rem 0.6rem 0.25rem 1.25rem;
  box-shadow: none;
  border-width: 1.5px;
}

.sticky-filter-wrapper.is-stuck .catalog-search-input {
  height: 36px;
  font-size: 0.9rem;
}

[data-theme="dark"] .sticky-filter-wrapper.is-stuck {
  background: rgba(21, 20, 18, 0.98);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

/* Search Bar Panjang di Atas */
.search-section {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  width: 100%;
}

.search-box-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--input-bg);
  border: 2px solid var(--border-color);
  border-radius: 999px;
  padding: 0.4rem 0.6rem 0.4rem 1.4rem;
  box-shadow: 0 10px 30px rgba(93, 78, 55, 0.07);
  transition: var(--transition-smooth);
}

.search-box-wrapper:focus-within {
  border-color: var(--color-gold);
  box-shadow: 0 12px 36px rgba(212, 175, 55, 0.24);
  transform: translateY(-2px);
}

.search-box-icon {
  color: var(--color-gold);
  margin-right: 0.85rem;
  flex-shrink: 0;
}

.catalog-search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-family: var(--font-secondary);
  font-size: 1.05rem;
  color: var(--text-primary);
  padding: 0.65rem 0.5rem;
}

.catalog-search-input::placeholder {
  color: var(--text-muted);
  opacity: 0.85;
  font-weight: 400;
}

.clear-search-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.clear-search-btn:hover {
  color: var(--color-gold);
  transform: scale(1.15);
}

/* Tag Filter Pills */
.tag-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.tag-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition-smooth);
  user-select: none;
}

.tag-pill:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-1px);
}

.tag-pill.active {
  background: linear-gradient(135deg, var(--color-gold), var(--color-dark-gold));
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

/* Search Results Info */
.search-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.75rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 0 0.5rem;
}

.reset-filter-link {
  color: var(--color-gold);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.reset-filter-link:hover {
  text-decoration: underline;
}

/* Main Grid Section */
.catalog-main {
  flex: 1;
  padding: 1.5rem 0 5rem;
}

.inti-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

/* Card Styling - Menyatu dengan INTISATU Utama */
.inti-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  cursor: pointer;
}

.inti-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.12), transparent);
  transition: var(--transition-smooth);
  pointer-events: none;
}

.inti-card:hover::before {
  left: 100%;
}

.inti-card:hover {
  transform: translateY(-8px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-hover);
}

.card-link-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
}

.inti-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
}

.inti-number {
  font-family: 'Courier New', monospace;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 1px;
}

.inti-tag {
  background: var(--tag-bg);
  color: var(--tag-color);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  white-space: nowrap;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.inti-title {
  font-family: var(--font-primary);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 0.9rem;
  transition: var(--transition-smooth);
  position: relative;
  z-index: 1;
}

.inti-title a {
  color: inherit;
  text-decoration: none;
}

.inti-card:hover .inti-title {
  color: var(--color-gold);
}

.inti-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 1.75rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.inti-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.15rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.reading-indicator {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-gold);
  transition: var(--transition-smooth);
}

.dot.inactive {
  opacity: 0.22;
}

.read-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition-smooth);
}

.inti-card:hover .read-action {
  color: var(--color-gold);
  transform: translateX(4px);
}

/* State: No Results */
.no-results {
  text-align: center;
  padding: 5rem 1rem;
  background: var(--bg-card);
  border-radius: 20px;
  border: 1px dashed var(--border-color);
  margin: 2rem 0;
}

.no-results-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.no-results h3 {
  font-family: var(--font-primary);
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.no-results p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.btn-reset {
  background: linear-gradient(135deg, var(--color-gold), var(--color-dark-gold));
  color: #FFFFFF;
  border: none;
  padding: 0.75rem 1.75rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
  transition: var(--transition-smooth);
}

.btn-reset:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.4);
}

/* Footer */
.catalog-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  text-align: center;
  margin-top: auto;
  transition: var(--transition-smooth);
}

.footer-brand {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 1.5px;
  margin-bottom: 0.5rem;
}

.footer-quote {
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--color-gold);
}

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

/* Floating Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 99999;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1.5px solid var(--border-color);
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(93, 78, 55, 0.15);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(14px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  border-color: var(--color-gold);
  box-shadow: 0 10px 28px rgba(212, 175, 55, 0.35);
  color: var(--color-dark-gold);
}

.back-to-top svg {
  pointer-events: none;
  transition: transform 0.2s ease;
}

.back-to-top:hover svg {
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-inner {
    height: 56px;
  }
  .nav-brand-title {
    display: none;
  }
  .nav-back-link {
    font-size: 0.85rem;
    padding: 0.35rem 0.75rem;
  }
  .theme-toggle {
    width: 38px;
    height: 38px;
  }
  .catalog-hero {
    padding: 2.25rem 0 1rem;
  }
  .sticky-filter-wrapper {
    top: 56px;
    padding: 0.75rem 0 0.6rem;
  }
  
  /* Saat discroll di mobile: jadikan filter super ramping (hanya search bar) */
  .sticky-filter-wrapper.is-stuck {
    padding: 0.35rem 0;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
  }
  .sticky-filter-wrapper.is-stuck .search-box-wrapper {
    padding: 0.2rem 0.5rem 0.2rem 0.9rem;
    border-width: 1.5px;
    box-shadow: none;
  }
  .sticky-filter-wrapper.is-stuck .catalog-search-input {
    font-size: 0.82rem;
    height: 32px;
  }
  .sticky-filter-wrapper.is-stuck .search-box-icon {
    width: 16px;
    height: 16px;
  }
  .sticky-filter-wrapper.is-stuck .tag-filters {
    display: none;
  }

  .tag-filters {
    gap: 0.45rem;
    margin-top: 0.75rem;
  }
  .tag-pill {
    font-size: 0.8rem;
    padding: 0.35rem 0.85rem;
  }
  .inti-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .back-to-top {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 42px;
    height: 42px;
  }
}