/* ==========================================================================
   PT KREASI VIRZY NUSANTARA (KVN) — Top-Tier Publisher Masterpiece System
   Design Style: Prestige Indonesian Digital Publisher (Obsidian & Gold Sheen)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Mono:ital,wght@0,400;0,500;1,400&family=Playfair+Display:ital,wght@0,400;0,600;0,700;0,800;1,400;1,600;1,700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Syne:wght@700;800&display=swap');

:root {
  /* Color Palette */
  --bg-obsidian: #06080c;
  --bg-surface: #0e121a;
  --bg-card: rgba(16, 21, 31, 0.85);
  --bg-card-hover: rgba(24, 31, 46, 0.95);
  
  --champagne-gold: #e6c670;
  --champagne-gold-bright: #f7da8b;
  --gold-glow: rgba(230, 198, 112, 0.25);
  --gold-foil: linear-gradient(135deg, #f7da8b 0%, #d4af37 50%, #a37c08 100%);
  
  --text-ivory: #f8f6f0;
  --text-silver: #94a3b8;
  --text-muted: #64748b;
  
  --border-gold: rgba(230, 198, 112, 0.25);
  --border-subtle: rgba(255, 255, 255, 0.08);
  
  /* Fonts */
  --font-display: 'Syne', sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono: 'DM Mono', monospace;
  
  /* Layout Constants */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-obsidian);
  color: var(--text-ivory);
  font-family: var(--font-sans);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Tactile Film Grain Texture Overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.55;
}

/* Ambient Spotlight & Grid Backdrop */
.bg-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb-hero {
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 1050px;
  height: 720px;
  background: radial-gradient(ellipse at center, rgba(230, 198, 112, 0.11) 0%, rgba(6, 8, 12, 0) 70%);
}

.glow-orb-accent {
  position: absolute;
  bottom: 15%;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle at center, rgba(212, 175, 55, 0.06) 0%, rgba(6, 8, 12, 0) 70%);
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Top Archival Ticker Bar */
.announcement-bar {
  background: #080a0e;
  border-bottom: 1px solid var(--border-gold);
  padding: 0.55rem 1rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--champagne-gold-bright);
  text-align: center;
  position: relative;
  z-index: 102;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.w-full { width: 100%; }

/* Sticky Archival Header Nav */
.site-header {
  position: fixed;
  top: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: var(--container-max);
  z-index: 100;
  transition: var(--transition-smooth);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.8rem;
  background: rgba(8, 11, 16, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-gold);
  border-radius: 999px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.75), 0 0 25px rgba(230, 198, 112, 0.12);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  border: 1.5px solid var(--champagne-gold);
  box-shadow: 0 0 15px var(--gold-glow);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.brand-text strong {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-ivory);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.brand-text small {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--champagne-gold);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-ivory);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: var(--champagne-gold-bright);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  border-radius: 999px;
  background: var(--gold-foil);
  color: #06080c;
  font-size: 0.825rem;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 18px var(--gold-glow);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(230, 198, 112, 0.5);
}

/* Hero Section — Magazine Split Layout */
.hero-editorial {
  padding-top: 13rem;
  padding-bottom: 6rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.1rem;
  border-radius: 999px;
  background: rgba(230, 198, 112, 0.08);
  border: 1px solid var(--border-gold);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--champagne-gold-bright);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
}

.hero-title-dramatic {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  line-height: 1.08;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.5rem;
}

.hero-title-dramatic em {
  font-style: italic;
  color: var(--champagne-gold);
  font-weight: 400;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-silver);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  flex-wrap: wrap;
}

/* Trust Metric Bar */
.trust-bar {
  display: flex;
  gap: 2rem;
  padding: 1.25rem 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-silver);
}

.trust-item svg {
  stroke: var(--champagne-gold);
}

/* 3D Book Stage */
.hero-book-stage {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1200px;
}

.book-3d-card {
  width: 280px;
  aspect-ratio: 3/4;
  border-radius: 12px;
  box-shadow: 
    -18px 22px 55px rgba(0, 0, 0, 0.85),
    0 0 45px rgba(230, 198, 112, 0.18);
  transform-style: preserve-3d;
  transform: perspective(1200px) rotateY(-14deg) rotateX(6deg);
  transition: var(--transition-smooth);
  position: relative;
}

.book-3d-card:hover {
  transform: perspective(1200px) rotateY(0deg) rotateX(0deg) scale(1.04);
  box-shadow: 
    0 25px 65px rgba(0, 0, 0, 0.95),
    0 0 55px rgba(230, 198, 112, 0.35);
}

.book-3d-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  display: block;
}

.book-sheen {
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 45%);
  pointer-events: none;
}

.book-spine-shadow {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 18px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.4), transparent);
  border-top-left-radius: 12px;
  border-bottom-left-radius: 12px;
  pointer-events: none;
}

.stage-badge {
  position: absolute;
  bottom: -1.5rem;
  right: 1rem;
  background: rgba(14, 18, 26, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-gold);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--champagne-gold-bright);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.88rem 2.2rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.btn-primary {
  background: var(--gold-foil);
  color: #06080c;
  box-shadow: 0 4px 20px var(--gold-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(230, 198, 112, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-ivory);
  border: 1px solid var(--border-gold);
}

.btn-secondary:hover {
  background: rgba(230, 198, 112, 0.12);
  border-color: var(--champagne-gold);
  color: var(--champagne-gold-bright);
}

/* Section Shell */
.section {
  padding: 7rem 0 6rem 0;
  scroll-margin-top: 5rem;
  border-top: 1px solid var(--border-subtle);
}

.section-header-editorial {
  margin-bottom: 3.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  color: #ffffff;
  margin-bottom: 0.85rem;
}

.section-desc {
  color: var(--text-silver);
  max-width: 660px;
  font-size: 1.05rem;
}

/* Uniform Height Book Cards Layout */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.25rem;
  align-items: stretch;
}

.book-card-uniform {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  padding: 2.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  backdrop-filter: blur(18px);
  transition: var(--transition-smooth);
}

.book-card-uniform:hover {
  background: var(--bg-card-hover);
  border-color: rgba(230, 198, 112, 0.5);
  transform: translateY(-5px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6), 0 0 30px rgba(230, 198, 112, 0.15);
}

.book-card-top {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  align-items: start;
}

.book-cover-wrap {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0,0,0,0.6);
  border: 1px solid var(--border-subtle);
  position: relative;
  transition: var(--transition-smooth);
}

.book-cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.badge-coming-soon {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: rgba(255, 191, 0, 0.15);
  color: var(--champagne-gold-bright);
  border: 1px solid rgba(255, 191, 0, 0.4);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.book-header-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--champagne-gold);
  margin-bottom: 0.5rem;
}

.book-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  line-height: 1.25;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

/* Author Mini Pill */
.author-mini-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.75rem 0.3rem 0.3rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  margin-bottom: 1rem;
}

.author-mini-pill img {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--champagne-gold);
}

.author-mini-pill span {
  font-size: 0.825rem;
  color: var(--text-silver);
}

.author-mini-pill strong {
  color: #ffffff;
}

.book-desc {
  font-size: 0.925rem;
  color: var(--text-silver);
  line-height: 1.65;
}

.book-card-bottom {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.book-stats {
  display: flex;
  gap: 1.75rem;
  margin-bottom: 1.5rem;
}

.stat-item strong {
  display: block;
  font-size: 1.2rem;
  color: #ffffff;
  font-family: var(--font-serif);
}

.stat-item span {
  font-family: var(--font-mono);
  font-size: 0.725rem;
  color: var(--text-muted);
}

.action-dual-btns {
  display: flex;
  gap: 0.75rem;
}

.action-dual-btns .btn {
  flex: 1;
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.75rem;
}

/* Info Cards */
.info-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(230, 198, 112, 0.08);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--champagne-gold);
  margin-bottom: 1.35rem;
}

.info-icon svg {
  stroke: var(--champagne-gold);
}

.info-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

.info-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
}

.info-value a {
  color: var(--champagne-gold-bright);
  text-decoration: none;
}

.info-value a:hover {
  text-decoration: underline;
}

/* Modal Popup Styles */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 10, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  width: 100%;
  max-width: 760px;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
  background: #0e121a;
  border: 1px solid var(--border-gold);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px rgba(0,0,0,0.9), 0 0 40px rgba(230, 198, 112, 0.2);
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

.modal-backdrop.active .modal-container {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-silver);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition-smooth);
}

.modal-close:hover {
  color: var(--champagne-gold-bright);
}

.modal-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--champagne-gold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  margin-bottom: 0.5rem;
}

/* Modal Author Spotlight Card */
.modal-author-section {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.modal-author-img {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--champagne-gold);
  flex-shrink: 0;
}

.modal-author-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: #ffffff;
  font-weight: 700;
}

.modal-author-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--champagne-gold);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.modal-author-bio {
  font-size: 0.875rem;
  color: var(--text-silver);
  line-height: 1.5;
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--text-silver);
  line-height: 1.65;
  margin-bottom: 1.75rem;
}

.syllabus-heading {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--champagne-gold-bright);
  margin-bottom: 1.25rem;
}

.syllabus-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.chapter-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
}

.chapter-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--champagne-gold);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.chapter-title {
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 0.35rem;
}

.chapter-desc {
  font-size: 0.875rem;
  color: var(--text-silver);
  line-height: 1.5;
}

.modal-footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.5rem;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.65rem;
  background: none;
  border: none;
  color: #ffffff;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question svg {
  stroke: var(--champagne-gold);
  transition: var(--transition-smooth);
}

.faq-answer {
  padding: 0 1.65rem 1.35rem 1.65rem;
  color: var(--text-silver);
  font-size: 0.975rem;
  display: none;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active {
  border-color: var(--border-gold);
}

.faq-item.active .faq-question svg {
  transform: rotate(45deg);
}

/* Footer */
.site-footer {
  padding: 5rem 0 2.5rem 0;
  background: #040609;
  border-top: 1px solid var(--border-gold);
  text-align: center;
}

.footer-brand {
  margin-bottom: 1.75rem;
}

.footer-brand h3 {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  color: #ffffff;
  margin-bottom: 0.4rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-contact {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2.2rem;
  margin-bottom: 2.25rem;
  font-size: 0.925rem;
  flex-wrap: wrap;
}

.footer-contact a {
  color: var(--champagne-gold-bright);
  text-decoration: none;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 2rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-editorial {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 10rem;
  }

  .hero-tag {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-book-stage {
    margin-top: 2rem;
  }

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

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

  .book-cover-wrap {
    max-width: 260px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .site-header {
    top: 2.2rem;
    width: calc(100% - 1.5rem);
  }

  .nav-links {
    display: none;
  }
}