/* ================================================================
   style.css — Praktikum Komputasi Numerik 2026
   Theme   : Purple Glassmorphism iOS
   Fonts   : Montserrat (display) · Poppins (body) · Press Start 2P (arcade)
   Author  : LabKom AKN
================================================================ */

/* ================================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
================================================================ */
:root {
  /* Brand Colors */
  --clr-primary:       #a855f7;
  --clr-primary-dark:  #7c3aed;
  --clr-primary-light: #c084fc;
  --clr-accent:        #2dd4bf;
  --clr-gold:          #f59e0b;
  --clr-danger:        #f87171;
  --clr-warn:          #fbbf24;
  --clr-success:       #22c55e;

  /* Backgrounds */
  --bg-base:    #08051a;
  --bg-layer:   #0e0b26;
  --bg-alt:     #120f32;

  /* Glass */
  --glass-bg:     rgba(255, 255, 255, 0.05);
  --glass-border: rgba(168, 85, 247, 0.22);
  --glass-blur:   blur(22px);
  --glass-shine:  rgba(255, 255, 255, 0.07);

  /* Glow */
  --glow-sm:  0 0 18px rgba(168, 85, 247, 0.25);
  --glow-md:  0 0 40px rgba(168, 85, 247, 0.30);
  --glow-lg:  0 0 70px rgba(168, 85, 247, 0.20);

  /* Shadow */
  --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.50);
  --shadow-lift: 0 30px 80px rgba(0, 0, 0, 0.60);

  /* Text */
  --text-primary:   #f3f0ff;
  --text-secondary: #c4b5fd;
  --text-muted:     rgba(196, 181, 253, 0.65);

  /* Typography */
  --ff-display: 'Montserrat', sans-serif;
  --ff-body:    'Poppins', sans-serif;
  --ff-arcade:  'Press Start 2P', monospace;

  /* Spacing */
  --section-py:  120px;
  --container-w: 1180px;

  /* Border radius */
  --radius-sm:  10px;
  --radius-md:  18px;
  --radius-lg:  26px;
  --radius-pill:50px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast:   0.2s;
  --dur-base:   0.35s;
  --dur-slow:   0.65s;
}


/* ================================================================
   2. RESET & BASE
================================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--ff-body);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* Custom scrollbar */
::-webkit-scrollbar          { width: 5px; }
::-webkit-scrollbar-track    { background: var(--bg-base); }
::-webkit-scrollbar-thumb    { background: var(--clr-primary-dark); border-radius: 3px; }


/* ================================================================
   3. BACKGROUND DECORATIONS
================================================================ */

/* Orbs / blobs */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.10;
  animation: orbFloat 16s ease-in-out infinite alternate;
}

.orb-1 {
  width: 560px; height: 560px;
  background: radial-gradient(circle, #7c3aed, #4c1d95);
  top: -180px; left: -140px;
  animation-delay: 0s;
}

.orb-2 {
  width: 460px; height: 460px;
  background: radial-gradient(circle, #a855f7, #6d28d9);
  bottom: 5%; right: -120px;
  animation-delay: 5s;
}

.orb-3 {
  width: 320px; height: 320px;
  background: radial-gradient(circle, #2dd4bf, #0e7490);
  top: 42%; left: 38%;
  animation-delay: 10s;
}

@keyframes orbFloat {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(35px, 35px) scale(1.12); }
}

/* Star canvas */
#starCanvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}


/* ================================================================
   4. LAYOUT UTILITIES
================================================================ */
.container {
  width: min(92%, var(--container-w));
  margin-inline: auto;
}

section {
  position: relative;
  z-index: 1;
  padding-block: var(--section-py);
}

/* ================================================================
   5. GLASS CARD
================================================================ */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

/* Subtle top shine line */
.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 15%; right: 15%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(168, 85, 247, 0.7),
    transparent
  );
  pointer-events: none;
}


/* ================================================================
   6. SECTION HEADER
================================================================ */
.section-head {
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: rgba(168, 85, 247, 0.10);
  border: 1px solid rgba(168, 85, 247, 0.28);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.section-title {
  font-family: var(--ff-display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 580px;
}

.divider {
  height: 1px;
  background: var(--glass-border);
  margin-block: 18px;
}

/* Gradient text utility */
.gradient-text {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* ================================================================
   7. BUTTONS
================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-family: var(--ff-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  border: none;
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.38);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(168, 85, 247, 0.55);
}

.btn-secondary {
  background: rgba(168, 85, 247, 0.12);
  color: var(--clr-primary);
  border: 1px solid rgba(168, 85, 247, 0.35);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(168, 85, 247, 0.22);
  transform: translateY(-3px);
}

.btn-wa {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #fff;
  box-shadow: 0 8px 24px rgba(34, 197, 94, 0.38);
}

.btn-wa:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(34, 197, 94, 0.55);
}

/* Ripple effect (JS adds .ripple-ring) */
.ripple { overflow: hidden; }

.ripple-ring {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
  transform: scale(0);
  animation: rippleAnim 0.6s linear;
  pointer-events: none;
}

@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}


/* ================================================================
   8. SCROLL REVEAL
================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.10s; }
.reveal-delay-2 { transition-delay: 0.20s; }
.reveal-delay-3 { transition-delay: 0.30s; }


/* ================================================================
   9. NAVBAR
================================================================ */
.navbar {
  position: fixed;
  top: 16px;                    /* jarak dari atas */
  left: 50%;
  transform: translateX(-50%);  /* tengah */
  width: min(92%, 1300px);  /* hampir full */       /* lebar maksimal, gak full */
  z-index: 900;
  background: rgba(8, 5, 26, 0.75);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid rgba(168, 85, 247, 0.20);
  border-radius: 50px;          /* pill shape */
  overflow: visible;
  transition: background var(--dur-base) ease;
}

.navbar.scrolled {
  background: rgba(8, 5, 26, 0.92);
}

.nav-inner {
  width: 100%;
  margin-inline: auto;
  height: 58px;
  padding-inline: 24px;        /* tambah ini */
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* ★ LOGO IMAGE — rendered if file exists */
.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 8px;
}

/* Fallback icon when image missing */
.nav-logo-fallback {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-accent));
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--glow-sm);
}

.nav-logo-text {
  font-family: var(--ff-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.nav-logo-text strong {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  font-family: var(--ff-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--dur-fast) ease, background var(--dur-fast) ease;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(168, 85, 247, 0.10);
}

.nav-cta {
  background: rgba(168, 85, 247, 0.15) !important;
  border: 1px solid rgba(168, 85, 247, 0.30);
  color: var(--clr-primary-light) !important;
  border-radius: var(--radius-sm);
}

.nav-cta:hover {
  background: rgba(168, 85, 247, 0.28) !important;
  color: #fff !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  border-radius: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--dur-base) ease, opacity var(--dur-base) ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.mobile-menu {
  position: absolute;
  top: calc(100% + 12px);   /* 🔥 kasih jarak 12px dari navbar */
  left: 0;
  width: 100%;

  background: rgba(8, 5, 26, 0.95);
  backdrop-filter: blur(24px);

  padding: 20px 24px;

  border-radius: 28px;   /* 🔥 rounded rectangle */
  border: 1px solid rgba(168, 85, 247, 0.25);

  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);

  transform: translateY(-10px) scale(0.95);
  opacity: 0;
  pointer-events: none;

  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
}


.mobile-menu.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu li { border-bottom: 1px solid rgba(168, 85, 247, 0.10); }
.mobile-menu a {
  display: block;
  padding: 13px 0;
  font-family: var(--ff-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--dur-fast);
}

.mobile-menu a:hover { color: var(--clr-primary); }


/* ================================================================
   10. HERO
================================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 66px;
  background: linear-gradient(155deg, #14073a 0%, var(--bg-base) 45%, #071428 100%);
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 65% 55% at 75% 55%, rgba(124, 58, 237, 0.10), transparent);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-block: 80px;
}

/* Hero tag */
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--ff-display);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(168, 85, 247, 0.10);
  border: 1px solid rgba(168, 85, 247, 0.28);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 22px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-success);
  flex-shrink: 0;
  animation: pulseDot 1.8s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
  50%       { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
}

/* Arcade label */
.hero-arcade {
  font-family: var(--ff-arcade);
  font-size: 0.52rem;
  color: var(--clr-primary);
  letter-spacing: 1px;
  line-height: 2;
  margin-bottom: 14px;
}

/* Hero h1 */
.hero-title {
  font-family: var(--ff-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.13;
  margin-bottom: 20px;
  min-height: 2.5em;
}

/* Typewriter cursor */
.hero-title .cursor {
  display: inline-block;
  width: 3px;
  height: 0.85em;
  background: var(--clr-primary);
  margin-left: 3px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  font-size: 0.93rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

/* Stats row */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Mobile Stats */
@media (max-width: 768px) {

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

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

}


.stat strong {
  display: block;
  font-family: var(--ff-display);
  font-size: 1.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat span {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: rgba(168, 85, 247, 0.25);
}

/* Hero right: visual card */
.hero-visual { position: relative; }

.hero-card {
  padding: 32px;
  max-width: 380px;
  margin-inline: auto;
}

/* ★ HERO LOGO IMAGE */
.hero-card-logo {
  margin-bottom: 22px;
}

.hero-logo-img {
  width: 200px;
  height: 200px;
  object-fit: contain;
  border-radius: 18px;
}

.hero-logo-fallback {
  display: none;
  width: 70px;
  height: 70px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-accent));
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 28px rgba(168, 85, 247, 0.45);
}

.logo-symbol {
  font-family: var(--ff-display);
  font-size: 2rem;
  font-weight: 900;
  color: #fff;
}

.hero-card-title {
  font-family: var(--ff-display);
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.hero-card-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.hero-card-body {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Floating pills */
.float-pill {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(168, 85, 247, 0.22);
  font-family: var(--ff-display);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  white-space: nowrap;
}

.pill-top  { top: -22px; right: 50px; animation: pillFloat 4.2s ease-in-out infinite; }
.pill-bottom { bottom: -15px; left: 50px; animation: pillFloat 4.2s ease-in-out infinite 2s; }
.pill-icon {
  width: 20px;
  height: 20px;
  filter: drop-shadow(0 0 6px rgba(168,85,247,0.5));
}

.float-pill {
  gap: 10px;
}


@keyframes pillFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-9px); }
}

.float-pill i { color: var(--clr-primary); }
.float-pill:nth-child(2) i { color: var(--clr-accent); }

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-hint span {
  display: block;
  width: 22px;
  height: 36px;
  border: 2px solid rgba(168, 85, 247, 0.40);
  border-radius: 11px;
  position: relative;
}

.scroll-hint span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 7px;
  background: var(--clr-primary);
  border-radius: 2px;
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%   { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(14px); opacity: 0; }
}

/* Biner BG */
/* Binary Rain */
.binary-rain {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.binary-col {
  position: absolute;
  top: -100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: binaryFall linear infinite;
  opacity: 0;
}

.binary-col span {
  font-family: var(--ff-arcade);
  font-size: 0.65rem;
  color: var(--clr-primary);
  opacity: 0.18;
  animation: binaryBlink 2s ease-in-out infinite alternate;
  line-height: 1;
}

.binary-col span.bright {
  opacity: 0.55;
  color: var(--clr-accent);
}

@keyframes binaryFall {
  0%   { top: -100%; opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { top: 110%; opacity: 0; }
}

@keyframes binaryBlink {
  0%   { opacity: 0.10; }
  100% { opacity: 0.45; }
}


/* ================================================================
   11. ASISTEN LABORATORIUM
================================================================ */
.asisten-praktikum {
  background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-layer) 100%);
}

.asisten-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, 180px);
  gap: 28px;
  justify-content: center;
  max-width: 1000px;
  margin: 0 auto;
}

.asisten-card {
  padding: 24px 16px 20px;
  text-align: center;
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) ease,
    border-color var(--dur-base) ease;
}

.asisten-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lift), var(--glow-sm);
  border-color: rgba(168, 85, 247, 0.45);
}

/* ★ PHOTO WRAPPER */
.asisten-photo-wrap {
  width: 150px;
  height: 150px;
  margin: 0 auto 16px;
  position: relative;
  flex-shrink: 0;
  scale: var(1xxxxx);
}

.asisten-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Fallback avatar shown when img missing */
.asisten-photo-fallback {
  display: none;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-accent));
  align-items: center;
  justify-content: center;
  font-family: var(--ff-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}

/* Badge koordinator */
.asisten-badge {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--ff-display);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.asisten-badge.koordinator {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  box-shadow: 0 4px 12px rgba(168, 85, 247, 0.40);
}

.asisten-name {
  font-family: var(--ff-display);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.asisten-role {
  font-size: 0.7rem;
  color: var(--clr-primary);
  font-weight: 500;
}

.asisten-link {
  text-decoration: none;
  color: inherit;
  display: block;
}


/* ================================================================
   12. BUKU REFERENSI
================================================================ */
.buku-referensi {
  background: var(--bg-layer);
}

.buku-referensi code {
  font-size: 0.8rem;
  background: rgba(168,85,247,0.12);
  border: 1px solid rgba(168,85,247,0.25);
  padding: 2px 8px;
  border-radius: 5px;
  color: var(--clr-primary-light);
}

/* Shelf section */
.shelf-section {
  margin-bottom: 52px;
}

.shelf-label {
  font-family: var(--ff-display);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--clr-accent);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(45, 212, 191, 0.18);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Bookshelf container */
.bookshelf {
  position: relative;
  padding-bottom: 0;
}

.shelf-row {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 40px 28px 0;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border: 1px solid rgba(168, 85, 247, 0.10);
  border-bottom: none;
  min-height: 230px;
  position: relative;
}

/* Wood plank */
.shelf-plank {
  height: 18px;
  background: linear-gradient(180deg,
    #3d2a6e 0%,
    #2a1c50 40%,
    #1e1340 100%
  );
  border-radius: 0 0 8px 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.50);
  border: 1px solid rgba(168, 85, 247, 0.20);
  border-top: 2px solid rgba(168, 85, 247, 0.35);
  position: relative;
}

.shelf-plank::after {
  content: '';
  position: absolute;
  top: 3px; left: 0; right: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
}

/* Individual book */
.shelf-book {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

/* BOOK SPINE */
.book-spine {
  width: 52px;
  height: 190px;
  border-radius: 4px 8px 8px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 6px;
  position: relative;
  transition:
    transform 0.42s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.35s ease;
  overflow: hidden;
}

/* Spine sheen */
.book-spine::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 6px; height: 100%;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px 0 0 4px;
}

.book-spine::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 3px; height: 100%;
  background: rgba(0, 0, 0, 0.25);
}

/* Spine colors by data-color */
.shelf-book[data-color="purple"] .book-spine {
  background: linear-gradient(180deg, #6d28d9, #4c1d95, #3b1270);
  box-shadow: 2px 4px 14px rgba(109, 40, 217, 0.45);
}
.shelf-book[data-color="teal"] .book-spine {
  background: linear-gradient(180deg, #0e7490, #065f6e, #044e5a);
  box-shadow: 2px 4px 14px rgba(14, 116, 144, 0.45);
}
.shelf-book[data-color="orange"] .book-spine {
  background: linear-gradient(180deg, #b45309, #92400e, #78350f);
  box-shadow: 2px 4px 14px rgba(180, 83, 9, 0.45);
}
.shelf-book[data-color="pink"] .book-spine {
  background: linear-gradient(180deg, #9d174d, #831843, #6d1237);
  box-shadow: 2px 4px 14px rgba(157, 23, 77, 0.45);
}
.shelf-book[data-color="blue"] .book-spine {
  background: linear-gradient(180deg, #1d4ed8, #1e3a8a, #172554);
  box-shadow: 2px 4px 14px rgba(29, 78, 216, 0.45);
}
.shelf-book[data-color="green"] .book-spine {
  background: linear-gradient(180deg, #15803d, #166534, #14532d);
  box-shadow: 2px 4px 14px rgba(21, 128, 61, 0.45);
}
.shelf-book[data-color="gray"] .book-spine {
  background: linear-gradient(180deg, #4b5563, #374151, #1f2937);
  box-shadow: 2px 4px 14px rgba(75, 85, 99, 0.45);
}
.shelf-book[data-color="yellow"] .book-spine {
  background: linear-gradient(180deg, #ca8a04, #854d0e, #713f0b);
  box-shadow: 2px 4px 14px rgba(202, 138, 4, 0.45);
}
.shelf-book[data-color="red"] .book-spine {
  background: linear-gradient(180deg, #b91c1c, #7f1d1d, #641e16);
  box-shadow: 2px 4px 14px rgba(185, 28, 28, 0.45);
}
.shelf-book[data-color="indigo"] .book-spine {
  background: linear-gradient(180deg, #4338ca, #312e81, #231651);
  box-shadow: 2px 4px 14px rgba(67, 56, 202, 0.45);
}
.shelf-book[data-color="white"] .book-spine {
  background: linear-gradient(180deg, #bcbcbc, #a0a3a8, #9ca3af);
  box-shadow: 2px 4px 14px rgba(243, 244, 246, 0.45);
}

/* Spine text — rotated vertically */
.spine-title {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  font-family: var(--ff-display);
  font-size: 0.58rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.90);
  line-height: 1.2;
  text-align: center;
  max-height: 130px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  letter-spacing: 0.3px;
}

.spine-author {
  font-family: var(--ff-display);
  font-size: 0.5rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

/* Hover / active: book lifts up */
.shelf-book:hover .book-spine,
.shelf-book.active .book-spine {
  transform: translateY(-8px);   /* dari -22px jadi -8px */
  box-shadow: 4px 18px 36px rgba(0, 0, 0, 0.60);
}

/* Popup card */
.book-popup {
  position: absolute;
  top: 50%;
  left: calc(100% + 14px);
  transform: translateY(-50%) translateX(10px) scale(0.88);
  opacity: 0;
  pointer-events: none;
  width: 175px;
  z-index: 50;
  transition: opacity 0.32s ease, transform 0.38s cubic-bezier(0.34, 1.56, 0.64, 1);
  padding: 0 0 14px;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.shelf-book:hover .book-popup,
.shelf-book.active .book-popup {
  opacity: 1;
  transform: translateY(-50%) translateX(0) scale(1);
  pointer-events: all;
}

.book-popup::after {
  content: '';
  position: absolute;
  top: 50%;
  left: -8px;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-right: 8px solid rgba(168, 85, 247, 0.22);
}

.shelf-book:hover .book-spine,
.shelf-book.active .book-spine {
  transform: translateY(-8px);
  box-shadow: 4px 18px 36px rgba(0, 0, 0, 0.60);
}
/* Cover in popup */
.popup-cover-wrap {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
  background: rgba(0,0,0,0.3);
  position: relative;
}

.popup-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.shelf-book:hover .popup-cover { transform: scale(1.04); }

.popup-cover-fallback {
  display: none;
  width: 100%;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(145deg, #12103a, #1e1566);
  font-size: 2rem;
  color: rgba(168, 85, 247, 0.40);
}

.popup-cover-fallback span {
  font-family: var(--ff-display);
  font-size: 0.6rem;
  font-weight: 600;
  text-align: center;
  color: rgba(168, 85, 247, 0.50);
  line-height: 1.5;
}

/* Popup info text */
.popup-info {
  padding: 12px 14px 0;
}

.popup-title {
  font-family: var(--ff-display);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.popup-author {
  font-size: 0.68rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.popup-pub {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--clr-primary);
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.28);
  padding: 2px 9px;
  border-radius: var(--radius-pill);
}

/* Popup flip ke KIRI (untuk buku di sisi kanan / mobile) */
.shelf-book.popup-flip .book-popup {
  left: auto;
  right: calc(100% + 14px);
  transform: translateY(-50%) translateX(-10px) scale(0.88);
}

.shelf-book.popup-flip:hover .book-popup,
.shelf-book.popup-flip.active .book-popup {
  transform: translateY(-50%) translateX(0) scale(1);
}

/* Arrow flip ke kanan */
.shelf-book.popup-flip .book-popup::after {
  left: auto;
  right: -8px;
  border-right: none;
  border-left: 8px solid rgba(168, 85, 247, 0.22);
}


/* ================================================================
   13. TIMELINE / CALENDAR
================================================================ */
.timeline {
  background: var(--bg-alt);
}

.gcal-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  min-height: 560px;
}

.gcal-frame {
  width: 100%;
  height: 580px;
  border: none;
  display: block;
  border-radius: var(--radius-lg);
}

/* Hint overlay — hidden once iframe loads or configured */
.gcal-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  background: rgba(14, 11, 38, 0.92);
  backdrop-filter: blur(12px);
  gap: 14px;
  pointer-events: none;
  /* Hide once iframe is configured (JS removes this) */
}

.gcal-hint-title {
  font-family: var(--ff-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.gcal-hint-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.75;
}

.gcal-hint-desc code {
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.30);
  padding: 2px 7px;
  border-radius: 5px;
  color: var(--clr-primary-light);
  font-size: 0.78rem;
}

.gcal-hint-desc strong {
  color: var(--clr-accent);
}

/* ================================================================
   14. TEMPLATE LAPORAN
================================================================ */
.template {
  background: var(--bg-layer);
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, 300px);
  gap: 28px;
  justify-content: center;
  max-width: 1000px;
  margin: 0 auto;
}


.template-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) ease,
    border-color var(--dur-base) ease;
}

.template-card:hover {
  transform: translateY(-8px);
  border-color: rgba(168, 85, 247, 0.45);
  box-shadow: var(--shadow-lift), var(--glow-sm);
}

/* ★ TEMPLATE PREVIEW IMAGE */
.template-preview-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;   /* 🔥 biar konsisten */
  overflow: hidden;
  border-radius: 20px 20px 0 0;
  position: relative;
}

.template-preview {
  width: 100%;
  height: 100%;
  object-fit: contain;   /* 🔥 ini kunci */
  background: #120f32;
  padding: 20px;
  object-position: center;
  transition: transform 0.6s ease;
}

.template-card:hover .template-preview {
  transform: scale(1.05);
}

.template-card {
  overflow: hidden;
}

.template-preview-fallback {
  display: none;
  width: 100%;
  height: 100%;
  background: linear-gradient(145deg, #12103a, #1e1566);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  font-size: 2.4rem;
  color: rgba(168, 85, 247, 0.45);
}

.template-preview-fallback span {
  font-family: var(--ff-display);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(168, 85, 247, 0.55);
}

.template-info {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.template-badge {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}

.badge-teal   { background: rgba(45,212,191,0.12); color: var(--clr-accent);  border: 1px solid rgba(45,212,191,0.30); }
.badge-orange { background: rgba(245,158,11,0.12); color: var(--clr-warn);    border: 1px solid rgba(245,158,11,0.30); }
.badge-purple { background: rgba(168,85,247,0.12); color: var(--clr-primary); border: 1px solid rgba(168,85,247,0.30); }

.template-name {
  font-family: var(--ff-display);
  font-size: 1rem;
  font-weight: 800;
}

.template-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}


/* ================================================================
   15. HALL OF FAME
================================================================ */
.hall {
  background: var(--bg-alt);
}

.hall .section-head {
  text-align: center;
}

.hall .section-desc {
  margin-inline: auto;
}

/* ── COUNTDOWN TIMER ── */
.hall-countdown {
  text-align: center;
  margin-top: 24px;
  margin-bottom: 10px;
}

.countdown-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.countdown-line {
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, 0.5), transparent);
}

.countdown-label-text {
  font-family: var(--ff-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.countdown-boxes {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.countdown-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 90px;
  height: 100px;
  background: rgba(15, 12, 40, 0.85);
  border: 1px solid rgba(168, 85, 247, 0.20);
  border-radius: 16px;
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.countdown-box:hover {
  border-color: rgba(245, 158, 11, 0.35);
  box-shadow:
    0 4px 24px rgba(245, 158, 11, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.countdown-number {
  font-family: var(--ff-display);
  font-size: 2.2rem;
  font-weight: 900;
  color: #f59e0b;
  line-height: 1;
  letter-spacing: 1px;
}

.countdown-unit {
  font-family: var(--ff-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 8px;
}

.countdown-sep {
  font-family: var(--ff-display);
  font-size: 2rem;
  font-weight: 900;
  color: rgba(245, 158, 11, 0.6);
  line-height: 1;
  margin-bottom: 18px;
  animation: sepPulse 1.2s ease-in-out infinite;
}

@keyframes sepPulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.25; }
}

.countdown-revealed {
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: #f59e0b;
  margin-top: 12px;
  animation: revealGlow 2s ease-in-out infinite alternate;
}

@keyframes revealGlow {
  0%   { text-shadow: 0 0 8px rgba(245, 158, 11, 0.3); }
  100% { text-shadow: 0 0 24px rgba(245, 158, 11, 0.6), 0 0 48px rgba(245, 158, 11, 0.2); }
}

@media (max-width: 480px) {
  .countdown-box {
    width: 70px;
    height: 82px;
  }
  .countdown-number {
    font-size: 1.6rem;
  }
  .countdown-sep {
    font-size: 1.4rem;
  }
  .countdown-boxes {
    gap: 8px;
  }
}

/* ── GOLDEN TICKET CARDS ── */
.golden-grid {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 18px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.golden-card {
  position: relative;
  width: 208px;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(180deg,
    #c9a24e 0%,
    #c1923f 20%,
    #a17d6c 42%,
    #6f627f 62%,
    #40384f 82%,
    #241f30 100%);
  border: 1px solid rgba(201, 148, 58, 0.28);
  box-shadow:
    0 10px 34px rgba(0, 0, 0, 0.55),
    0 2px 12px rgba(201, 148, 58, 0.12);
  transition:
    transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 0.4s ease;
}

.golden-card:hover {
  transform: translateY(-10px);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.55),
    0 4px 20px rgba(201, 148, 58, 0.22);
}

.golden-npm {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--ff-display);
  font-size: 5rem;
  font-weight: 900;
  color: rgba(233, 205, 135, 0.5);
  line-height: 1;
  z-index: 1;
  pointer-events: none;
  white-space: nowrap;
  letter-spacing: -1px;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.25);
}

.golden-photo-wrap {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 404px;
  margin-top: 50px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.golden-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.golden-bar {
  position: relative;
  z-index: 3;
  height: 7px;
  background: linear-gradient(90deg, #b8860b, #f5d060, #c9943a, #f5d060, #b8860b);
  box-shadow: 0 0 14px rgba(245, 208, 96, 0.45);
}

/* ── SPOILER BLUR for golden cards ── */
.golden-card.spoiler {
  filter: blur(8px);
  cursor: default;
  user-select: none;
  transition:
    filter 0.6s ease,
    transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.golden-card.spoiler:hover {
  transform: translateY(0);
}

.golden-card.spoiler::after {
  content: '?';
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-display);
  font-size: 5rem;
  font-weight: 900;
  color: rgba(201, 148, 58, 0.85);
  text-shadow:
    0 0 30px rgba(201, 148, 58, 0.6),
    0 0 60px rgba(201, 148, 58, 0.2);
  filter: blur(0);
  pointer-events: none;
  border-radius: 8px;
}

@media (max-width: 720px) {
  .golden-card { width: 168px; }
  .golden-photo-wrap { height: 316px; margin-top: 52px; }
  .golden-npm { font-size: 4rem; top: 12px; }
}

@media (max-width: 480px) {
  .golden-grid { gap: 12px; }
  .golden-card { width: 144px; }
  .golden-photo-wrap { height: 270px; margin-top: 44px; }
  .golden-npm { font-size: 3.3rem; }
}

/* ================================================================
   16. WHATSAPP CTA
================================================================ */
.whatsapp {
  background: var(--bg-layer);
}

.wa-card {
  max-width: 660px;
  margin-inline: auto;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Rotating glow background in card */
.wa-card::after {
  content: '';
  position: absolute;
  inset: -60%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.06), transparent 65%);
  animation: waRotate 18s linear infinite;
  pointer-events: none;
}

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

.wa-icon {
  display: block;
  font-size: 3.2rem;
  color: var(--clr-success);
  margin-bottom: 22px;
  animation: waBounce 2.4s ease-in-out infinite;
  position: relative;
  z-index: 1;
}

@keyframes waBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

.wa-title {
  font-family: var(--ff-display);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.wa-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}


/* ================================================================
   17. FOOTER
================================================================ */
.site-footer {
  background: #030110;
  border-top: 1px solid rgba(168, 85, 247, 0.14);
  position: relative;
  z-index: 1;
}

.footer-inner {
  width: min(92%, var(--container-w));
  margin-inline: auto;
  padding-block: 56px 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

/* ★ FOOTER LOGO */
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 10px;
}

.footer-logo-fallback {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-accent));
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--glow-sm);
}

.footer-logo-text {
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
}

.footer-logo-text strong {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-tagline {
  font-size: 0.80rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Footer nav */
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-family: var(--ff-display);
  font-size: 0.80rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--dur-fast), padding-left var(--dur-fast);
}

.footer-nav a:hover {
  color: var(--clr-primary);
  padding-left: 5px;
}

/* Footer collab */
.footer-collab-label {
  font-family: var(--ff-display);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.collab-badges {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.collab-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-family: var(--ff-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.collab-badge i { color: var(--clr-primary); }

/* Footer bottom */
.footer-bottom {
  border-top: 1px solid rgba(168, 85, 247, 0.10);
  padding: 22px 5%;
  text-align: center;
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.25);
  font-family: var(--ff-body);
}

.footer-collab {
  margin-bottom: 30px;
  text-align: center;
}

.collab-title {
  font-family: var(--ff-display);
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.collab-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.collab-logos img {
  height: 50px;
  object-fit: contain;
  opacity: 0.75;
  transition: all 0.3s ease;
  filter: grayscale(100%);
}

.collab-logos img:hover {
  opacity: 1;
  filter: grayscale(0%);
  transform: scale(1.08);
}


/* ================================================================
   18. RESPONSIVE
================================================================ */
@media (max-width: 900px) {
  :root { --section-py: 86px; }

  .hero-layout {
    grid-template-columns: 1fr;
    padding-block: 60px;
  }

  .hero-visual { display: none; }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .asisten-grid { grid-template-columns: repeat(2, 1fr); }
  .buku-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
  .podium-item { width: 150px; }
  .wa-card { padding: 38px 24px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.9rem; }
  .section-title { font-size: 1.7rem; }
  .hero-buttons { flex-direction: column; }
  .buku-grid { grid-template-columns: 1fr; }
  .template-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {

  .podium {
    display: grid;
    grid-template-columns: repeat(3, 1fr);  /* 🔥 tetap 3 kolom */
    gap: 12px;
    align-items: end;
    justify-items: center;
  }

  .podium-item {
    width: 100%;
    max-width: none;
    padding: 20px 10px 0;
  }

  .rank-1 {
    transform: scale(1.05);   /* sedikit lebih besar */
  }

  .rank-2,
  .rank-3 {
    transform: scale(0.95);   /* sedikit lebih kecil */
  }

}