/* ══════════════════════════════════════
   AIR.CSS — Enhanced Interactive Version
   ══════════════════════════════════════ */

.halaman {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 100px 20px;
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  margin-bottom: 8px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110%;
  height: 110%;
  min-width: calc(100vh * 16 / 9);
  min-height: calc(100vw * 9 / 16);
  opacity: 0.35;
  z-index: 0;
  pointer-events: none;
  border: none;
}

.hero-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 31, 14, 0.3) 0%, rgba(10, 31, 14, 0.75) 100%);
  z-index: 1;
}

[data-theme="light"] .hero-overlay {
  background: linear-gradient(to bottom, rgba(0, 60, 120, 0.25) 0%, rgba(0, 40, 80, 0.55) 100%);
}

.hero-ikon,
.hero-nomor,
.hero-judul,
.hero-sub,
.hero-scroll {
  position: relative;
  z-index: 2;
}

.hero-ikon {
  font-size: 3rem;
  color: var(--warna-air);
  margin-bottom: 20px;
  animation: float 3s ease-in-out infinite;
  display: inline-block;
}

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

.hero-nomor {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--warna-air);
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.3s forwards;
}

.hero-judul {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 30%, var(--warna-air));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.5s forwards;
}

[data-theme="light"] .hero-judul {
  background: linear-gradient(135deg, #e8f5ea 30%, var(--warna-air));
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-sub {
  color: rgba(255,255,255,0.8);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 500px;
  margin: 0 auto 32px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.7s forwards;
}

/* scroll indicator */
.hero-scroll {
  opacity: 0;
  animation: fadeUp 0.8s ease 1s forwards;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--warna-air), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hijau-border), transparent);
  margin: 8px 0;
}

/* ── Section ── */
.sek {
  padding: 64px 0;
}

.sek-header {
  margin-bottom: 40px;
}

.sek-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--warna-air);
  margin-bottom: 10px;
}

.sek-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--warna-air);
  border-radius: 2px;
}

.sek-judul {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--teks-utama);
  letter-spacing: -0.5px;
}

.sek-sub {
  color: var(--teks-redup);
  font-size: 0.92rem;
  margin-bottom: 0;
}

/* ── Kartu Dasar ── */
.kartu {
  background-color: var(--bg-card);
  border-radius: 20px;
  border: 1.5px solid var(--hijau-border);
  padding: 28px 24px;
  height: 100%;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              border-color 0.3s,
              box-shadow 0.3s;
  position: relative;
  overflow: hidden;
  cursor: default;
}

.kartu::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(58, 159, 255, 0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.kartu:hover::before { opacity: 1; }

.kartu:hover {
  transform: translateY(-8px);
  border-color: rgba(58, 159, 255, 0.45);
  box-shadow: 0 20px 48px rgba(58, 159, 255, 0.1);
}

.kartu h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--teks-utama);
}

.kartu p {
  color: var(--teks-redup);
  font-size: 0.88rem;
  line-height: 1.75;
  margin: 0;
}

.kartu-ikon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background-color: rgba(58, 159, 255, 0.1);
  color: var(--warna-air);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 18px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), background-color 0.3s;
}

.kartu:hover .kartu-ikon {
  transform: scale(1.15) rotate(-5deg);
  background-color: rgba(58, 159, 255, 0.2);
}

/* ── Stat Cards ── */
.kartu-stat {
  text-align: center;
  padding: 36px 20px;
}

.stat-angka {
  font-size: 3rem;
  font-weight: 800;
  color: var(--warna-air);
  line-height: 1;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
  display: block;
}

.kartu-stat p {
  font-size: 0.84rem;
  color: var(--teks-redup);
  line-height: 1.5;
}

/* water fill animation on hover */
.kartu-stat {
  background-image: linear-gradient(to top, rgba(58, 159, 255, 0.08) 0%, transparent 0%);
  background-size: 100% 100%;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              border-color 0.3s,
              box-shadow 0.3s,
              background-size 0.6s ease;
}

.kartu-stat:hover {
  background-size: 100% 100%;
  background-image: linear-gradient(to top, rgba(58, 159, 255, 0.12) 40%, transparent 100%);
}

/* ── Dampak Cards ── */
.kartu-dampak {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  border-left: 3px solid rgba(58, 159, 255, 0.25);
  padding-left: 20px;
  border-radius: 0 20px 20px 0;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              border-color 0.3s,
              box-shadow 0.3s;
}

.kartu-dampak:hover {
  border-left-color: var(--warna-air);
  transform: translateX(6px) translateY(-4px);
  box-shadow: -4px 16px 40px rgba(58, 159, 255, 0.1);
}

.dampak-nomor {
  font-size: 2.2rem;
  font-weight: 800;
  color: rgba(58, 159, 255, 0.2);
  line-height: 1;
  flex-shrink: 0;
  width: 44px;
  transition: color 0.3s;
  letter-spacing: -1px;
}

.kartu-dampak:hover .dampak-nomor {
  color: rgba(58, 159, 255, 0.55);
}

/* ── Scroll reveal ── */
.muncul {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.muncul.tampil {
  opacity: 1;
  transform: translateY(0);
}

/* stagger anak-anaknya */
.muncul .col-md-4:nth-child(1) .kartu,
.muncul .col-md-3:nth-child(1) .kartu,
.muncul .col-md-6:nth-child(1) .kartu { transition-delay: 0.05s; }
.muncul .col-md-4:nth-child(2) .kartu,
.muncul .col-md-3:nth-child(2) .kartu,
.muncul .col-md-6:nth-child(2) .kartu { transition-delay: 0.12s; }
.muncul .col-md-4:nth-child(3) .kartu,
.muncul .col-md-3:nth-child(3) .kartu,
.muncul .col-md-6:nth-child(3) .kartu { transition-delay: 0.19s; }
.muncul .col-md-3:nth-child(4) .kartu,
.muncul .col-md-6:nth-child(4) .kartu { transition-delay: 0.26s; }

/* ── Quote / Highlight Box ── */
.highlight-box {
  background: linear-gradient(135deg, rgba(58, 159, 255, 0.08), rgba(77, 217, 240, 0.05));
  border: 1px solid rgba(58, 159, 255, 0.2);
  border-radius: 20px;
  padding: 32px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.highlight-box::before {
  content: '"';
  position: absolute;
  top: -20px;
  left: 20px;
  font-size: 8rem;
  color: rgba(58, 159, 255, 0.06);
  font-family: serif;
  line-height: 1;
  pointer-events: none;
}

.highlight-box p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--teks-utama);
  font-style: italic;
  margin: 0;
  position: relative;
  z-index: 1;
}

.highlight-box cite {
  display: block;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--warna-air);
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.08em;
}

/* ── Progress bar fakta ── */
.fakta-bar {
  margin-bottom: 20px;
}

.fakta-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--teks-utama);
  margin-bottom: 6px;
  font-weight: 500;
}

.fakta-bar-label span:last-child {
  color: var(--warna-air);
  font-weight: 700;
}

.fakta-bar-track {
  height: 8px;
  background: var(--hijau-border);
  border-radius: 99px;
  overflow: hidden;
}

.fakta-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--warna-air), var(--warna-udara));
  border-radius: 99px;
  width: 0%;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Timeline ── */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--warna-air), transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 32px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-titik {
  position: absolute;
  left: -34px;
  top: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-utama);
  border: 2px solid var(--warna-air);
  transition: transform 0.3s, background-color 0.3s;
  z-index: 1;
}

.timeline-titik.aktif {
  background: var(--warna-air);
  box-shadow: 0 0 0 4px rgba(58, 159, 255, 0.2);
}

.timeline-item:hover .timeline-titik {
  transform: scale(1.4);
  background: var(--warna-air);
}

.timeline-tahun {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--warna-air);
  letter-spacing: 0.05em;
  padding-top: 18px;
  text-align: right;
}

.timeline-tahun.aktif {
  font-size: 0.85rem;
}

.timeline-kartu {
  margin-bottom: 0 !important;
}

.timeline-kartu-aktif {
  border-color: rgba(58, 159, 255, 0.4) !important;
  background: linear-gradient(135deg, var(--bg-card), rgba(58, 159, 255, 0.04));
}

.timeline-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warna-air);
  background: rgba(58, 159, 255, 0.1);
  border: 1px solid rgba(58, 159, 255, 0.2);
  padding: 3px 10px;
  border-radius: 99px;
  margin-bottom: 10px;
}

.badge-aktif {
  color: #fff;
  background: var(--warna-air);
  border-color: var(--warna-air);
}

@media (max-width: 576px) {
  .timeline { padding-left: 28px; }
  .timeline-item { grid-template-columns: 56px 1fr; gap: 12px; }
  .timeline-tahun { font-size: 0.72rem; padding-top: 16px; }
}

/* ── Navigasi Elemen ── */
.nav-elemen {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  border-radius: 20px;
  border: 1.5px solid var(--hijau-border);
  background: var(--bg-card);
  text-decoration: none;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              border-color 0.3s, box-shadow 0.3s;
  height: 100%;
}

.nav-elemen:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.12);
}

.nav-elemen-udara:hover {
  border-color: var(--warna-udara);
  box-shadow: 0 20px 48px rgba(77, 217, 240, 0.12);
}

.nav-elemen-tanah:hover {
  border-color: var(--warna-tanah);
  box-shadow: 0 20px 48px rgba(200, 135, 74, 0.12);
}

.nav-elemen-ikon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.nav-elemen-udara .nav-elemen-ikon {
  background: rgba(77, 217, 240, 0.1);
  color: var(--warna-udara);
}

.nav-elemen-tanah .nav-elemen-ikon {
  background: rgba(200, 135, 74, 0.1);
  color: var(--warna-tanah);
}

.nav-elemen:hover .nav-elemen-ikon {
  transform: scale(1.1) rotate(-5deg);
}

.nav-elemen-info { flex: 1; }

.nav-elemen-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teks-redup);
  margin-bottom: 4px;
}

.nav-elemen-judul {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--teks-utama);
  margin: 0 0 4px;
  letter-spacing: -0.5px;
}

.nav-elemen-sub {
  font-size: 0.82rem;
  color: var(--teks-redup);
  margin: 0;
  line-height: 1.5;
}

.nav-elemen-arrow {
  color: var(--teks-redup);
  font-size: 1rem;
  transition: transform 0.3s, color 0.3s;
  flex-shrink: 0;
}

.nav-elemen-udara:hover .nav-elemen-arrow { color: var(--warna-udara); transform: translateX(4px); }
.nav-elemen-tanah:hover .nav-elemen-arrow { color: var(--warna-tanah); transform: translateX(4px); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .halaman { padding: 32px 16px 60px; }
  .hero { padding: 64px 16px 72px; min-height: 420px; }
  .sek { padding: 48px 0; }
  .highlight-box { padding: 24px 20px; }
}

@media (max-width: 480px) {
  .hero-judul { font-size: 2.6rem; }
  .kartu { padding: 20px 18px; }
  .stat-angka { font-size: 2rem; }
}


.music-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(58, 159, 255, 0.8); /* Warna Biru Air */
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.music-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(46, 160, 67, 0.8);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.music-btn:hover {
    transform: scale(1.1);
    background: rgba(46, 160, 67, 1);
}