/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  style.css — Seluruh stylesheet website anniversary                    ║
   ║                                                                        ║
   ║  Urutan section:                                                       ║
   ║  1. Design Tokens       6. Opening Section                             ║
   ║  2. Reset & Base        7. Timeline Section                            ║
   ║  3. Layout              8. Ending Section                              ║
   ║  4. Components          9. Responsive                                  ║
   ║  5. Animations         10. Accessibility                               ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  1. DESIGN TOKENS                                                      ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

:root {
  /* ── Warna Utama ─── */
  --pink-pastel:     #FFD6E0;
  --pink-soft:       #FFADC6;
  --pink-medium:     #FF87AB;
  --pink-deep:       #F2719A;
  --rose:            #E8788A;
  --peach:           #FFE5D4;
  --cream:           #FFF8F0;
  --white:           #FFFFFF;

  /* ── Warna Teks ─── */
  --text-primary:    #5C3D4E;
  --text-secondary:  #8B6B7B;
  --text-muted:      #B8A0AC;

  /* ── Warna Utilitas ─── */
  --overlay:         rgba(92, 61, 78, 0.35);
  --shadow-color:    rgba(232, 120, 138, 0.18);

  /* ── Gradient ─── */
  --gradient-bg:       linear-gradient(170deg, #FFD6E0 0%, #FFE5D4 50%, #FFF8F0 100%);
  --gradient-card:     linear-gradient(135deg, #FFFFFF 0%, #FFF8F0 100%);
  --gradient-btn:      linear-gradient(135deg, #FF87AB 0%, #F2719A 100%);
  --gradient-btn-hover: linear-gradient(135deg, #F2719A 0%, #E8788A 100%);

  /* ── Tipografi ─── */
  --font-pixel:  'Silkscreen', cursive;
  --font-body:   'Nunito', sans-serif;

  --fs-xs:    clamp(0.625rem, 0.55rem + 0.25vw, 0.75rem);
  --fs-sm:    clamp(0.75rem, 0.65rem + 0.35vw, 0.875rem);
  --fs-base:  clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
  --fs-md:    clamp(1rem, 0.9rem + 0.4vw, 1.125rem);
  --fs-lg:    clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --fs-xl:    clamp(1.375rem, 1.15rem + 0.8vw, 1.75rem);
  --fs-2xl:   clamp(1.75rem, 1.4rem + 1.2vw, 2.25rem);
  --fs-3xl:   clamp(2rem, 1.5rem + 1.8vw, 2.75rem);

  --lh-tight:    1.2;
  --lh-normal:   1.5;
  --lh-relaxed:  1.7;
  --lh-loose:    1.9;

  /* ── Spacing ─── */
  --sp-2xs:   0.25rem;
  --sp-xs:    0.5rem;
  --sp-sm:    0.75rem;
  --sp-md:    1rem;
  --sp-lg:    1.5rem;
  --sp-xl:    2rem;
  --sp-2xl:   3rem;
  --sp-3xl:   4rem;

  /* ── Shadows ─── */
  --shadow-sm:     0 2px 8px var(--shadow-color);
  --shadow-md:     0 4px 16px var(--shadow-color);
  --shadow-pixel:  3px 3px 0 var(--pink-soft);

  /* ── Transitions ─── */
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --dur-fast:    150ms;
  --dur-normal:  300ms;
  --dur-slow:    500ms;
  --dur-slower:  800ms;

  /* ── Layout ─── */
  --container-max:    480px;
  --content-padding:  var(--sp-lg);
  --nav-height:       72px;

  /* ── Z-index ─── */
  --z-bg:       -1;
  --z-base:      0;
  --z-content:   10;
  --z-deco:      20;
  --z-nav:       30;
  --z-overlay:   40;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  2. RESET & BASE                                                       ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background: var(--gradient-bg);
  min-height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
  font-family: var(--font-pixel);
  font-weight: 400;
  line-height: var(--lh-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); }

p {
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible {
  outline: 3px solid var(--pink-medium);
  outline-offset: 3px;
}

::selection {
  background-color: var(--pink-soft);
  color: var(--text-primary);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  3. LAYOUT                                                             ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

#app {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

/*
   Section base — absolute positioned, transisi opacity.
   padding-bottom menyisakan ruang untuk global nav di bawah.
   Konten otomatis terpusat di area di atas nav (golden ratio),
   karena center point bergeser ke atas akibat padding-bottom.
*/
.section {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--content-padding);
  padding-bottom: var(--nav-height);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--dur-slow) var(--ease-out),
    visibility var(--dur-slow) var(--ease-out);
  z-index: var(--z-base);
}

.section.is-active {
  opacity: 1;
  visibility: visible;
  z-index: var(--z-content);
}

.section__inner {
  width: 100%;
  max-width: var(--container-max);
  display: flex;
  flex-direction: column;
  align-items: center;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  4. COMPONENTS                                                         ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

/* ── Global Navigation ───────────────────────────────────────────────────── */

.nav {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md) var(--content-padding);
  padding-bottom: max(var(--sp-md), env(safe-area-inset-bottom, var(--sp-md)));
  z-index: var(--z-nav);

  /* Latar frosted glass agar teks di bawahnya tetap terbaca */
  background: rgba(255, 248, 240, 0.92);
}

@supports (backdrop-filter: blur(10px)) {
  .nav {
    background: rgba(255, 248, 240, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

.nav__btn {
  min-width: 72px;
  flex-shrink: 0;
}

.nav__back::before {
  content: '◀';
  margin-right: var(--sp-2xs);
  font-size: 0.65em;
}

.nav__forward::after {
  content: '▶';
  margin-left: var(--sp-2xs);
  font-size: 0.65em;
}

/* Primary variant — tombol Start, Replay */
.nav__forward.is-primary {
  background: var(--gradient-btn);
  color: var(--white);
  box-shadow: var(--shadow-pixel);
  border-color: transparent;
}

.nav__forward.is-primary:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-2px);
  box-shadow: 3px 5px 0 var(--pink-soft);
}

.nav__forward.is-primary:active {
  transform: translateY(1px);
  box-shadow: 1px 1px 0 var(--pink-soft);
}

/* Sembunyikan panah pada tombol primary (Start, Replay) */
.nav__forward.is-primary::after {
  display: none;
}

/* Disabled state */
.nav__back.is-disabled {
  opacity: 0.25;
  pointer-events: none;
}

.nav__back.is-disabled::before {
  display: none;
}

/* Dots — hanya terlihat di timeline */
.nav__dots {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-normal) var(--ease-out);
}

.nav.show-dots .nav__dots {
  opacity: 1;
  pointer-events: auto;
}

/* ── Pixel Button ────────────────────────────────────────────────────────── */

.pixel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-xs);
  font-family: var(--font-pixel);
  font-size: var(--fs-sm);
  color: var(--white);
  padding: 10px 24px;
  background: var(--gradient-btn);
  border: none;
  box-shadow: var(--shadow-pixel);
  transition:
    transform var(--dur-fast) var(--ease-bounce),
    box-shadow var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.pixel-btn:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-2px);
  box-shadow: 3px 5px 0 var(--pink-soft);
}

.pixel-btn:active {
  transform: translateY(1px);
  box-shadow: 1px 1px 0 var(--pink-soft);
}

.pixel-btn--lg {
  font-size: var(--fs-base);
  padding: 12px 36px;
}

/* Ghost (transparan dengan border) */
.pixel-btn--ghost {
  background: transparent;
  color: var(--pink-medium);
  box-shadow: none;
  border: 2px solid var(--pink-soft);
}

.pixel-btn--ghost:hover {
  background: var(--pink-pastel);
  color: var(--text-primary);
  box-shadow: none;
  border-color: var(--pink-medium);
}

.pixel-btn--ghost:active {
  transform: translateY(1px);
  box-shadow: none;
}

/* ── Pixel Frame (bingkai media) ─────────────────────────────────────────── */

.pixel-frame {
  position: relative;
  background: var(--white);
  padding: 5px;
  border: 3px solid var(--pink-soft);
  box-shadow: var(--shadow-pixel);
  overflow: hidden;
}

.pixel-frame img,
.pixel-frame video {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  display: block;
  background: var(--cream);
}

/* ── Pixel Dialog Box ────────────────────────────────────────────────────── */

.pixel-dialog {
  position: relative;
  width: 100%;
  background: var(--gradient-card);
  padding: var(--sp-md) var(--sp-lg);
  border: 2px solid var(--pink-pastel);
  box-shadow: var(--shadow-pixel);
}

.pixel-dialog__title {
  font-family: var(--font-pixel);
  font-size: var(--fs-lg);
  color: var(--text-primary);
  margin-bottom: var(--sp-2xs);
}

.pixel-dialog__text {
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  color: var(--text-secondary);
}

/* ── Pixel Date Badge ────────────────────────────────────────────────────── */

.pixel-date {
  display: inline-block;
  font-family: var(--font-pixel);
  font-size: var(--fs-xs);
  color: var(--pink-deep);
  background: var(--cream);
  padding: 3px 10px;
  border: 2px solid var(--pink-pastel);
  box-shadow: 2px 2px 0 var(--pink-pastel);
}

/* ── Scene Dots Indicator ────────────────────────────────────────────────── */

.scene-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-xs);
  overflow: hidden;
}

.scene-dots__dot {
  width: 7px;
  height: 7px;
  background: var(--pink-pastel);
  border: 1px solid var(--pink-soft);
  transition: all var(--dur-normal) var(--ease-out);
}

.scene-dots__dot.is-active {
  background: var(--pink-medium);
  border-color: var(--pink-medium);
  transform: scale(1.35);
}

/* ── Music Toggle ────────────────────────────────────────────────────────── */

.music-toggle {
  position: absolute;
  top: var(--sp-md);
  right: var(--sp-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 248, 240, 0.92);
  border: 2px solid var(--pink-pastel);
  box-shadow: 2px 2px 0 var(--pink-pastel);
  z-index: var(--z-nav);
  transition:
    background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-bounce),
    box-shadow var(--dur-fast) var(--ease-out);
}

@supports (backdrop-filter: blur(10px)) {
  .music-toggle {
    background: rgba(255, 248, 240, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}

.music-toggle:hover {
  background: var(--pink-pastel);
  border-color: var(--pink-soft);
  transform: translateY(-1px);
  box-shadow: 2px 3px 0 var(--pink-soft);
}

.music-toggle:active {
  transform: translateY(1px);
  box-shadow: 1px 1px 0 var(--pink-pastel);
}

/* Pixel music note icon */
.music-toggle__icon {
  position: relative;
  width: 12px;
  height: 14px;
}

/* Note head */
.music-toggle__icon::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 6px;
  height: 4px;
  background: var(--text-muted);
  transition: background var(--dur-normal) var(--ease-out);
}

/* Stem + flag */
.music-toggle__icon::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: 12px;
  background: var(--text-muted);
  box-shadow: 2px 1px 0 var(--text-muted), 4px 2px 0 var(--text-muted);
  transition:
    background var(--dur-normal) var(--ease-out),
    box-shadow var(--dur-normal) var(--ease-out);
}

/* Mute slash — ditampilkan saat musik tidak aktif */
.music-toggle:not(.is-playing)::after {
  content: '';
  position: absolute;
  width: 26px;
  height: 2px;
  background: var(--rose);
  transform: rotate(-45deg);
  opacity: 0.55;
}

/* Playing state */
.music-toggle.is-playing {
  border-color: var(--pink-soft);
}

.music-toggle.is-playing .music-toggle__icon::before {
  background: var(--pink-medium);
}

.music-toggle.is-playing .music-toggle__icon::after {
  background: var(--pink-medium);
  box-shadow: 2px 1px 0 var(--pink-medium), 4px 2px 0 var(--pink-medium);
}

.music-toggle.is-playing .music-toggle__icon {
  animation: gentle-bounce 1.2s ease-in-out infinite;
}

/* ── Pixel Decorations (CSS-only) ────────────────────────────────────────── */

.deco-heart {
  position: absolute;
  width: 14px;
  height: 12px;
  pointer-events: none;
  z-index: var(--z-deco);
}

.deco-heart::before,
.deco-heart::after {
  content: '';
  position: absolute;
  top: 0;
  width: 8px;
  height: 8px;
  background: var(--pink-medium);
}

.deco-heart::before {
  left: 0;
  transform: rotate(-45deg);
  transform-origin: bottom right;
}

.deco-heart::after {
  right: 0;
  transform: rotate(45deg);
  transform-origin: bottom left;
}

.deco-sparkle {
  position: absolute;
  width: 5px;
  height: 5px;
  pointer-events: none;
  z-index: var(--z-deco);
}

.deco-sparkle::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--pink-soft);
  box-shadow:
    0 -5px 0 0 var(--pink-soft),
    0  5px 0 0 var(--pink-soft),
    -5px 0 0 0 var(--pink-soft),
     5px 0 0 0 var(--pink-soft);
}

.deco-cloud {
  position: absolute;
  width: 40px;
  height: 16px;
  pointer-events: none;
  z-index: var(--z-deco);
  opacity: 0.45;
}

.deco-cloud::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 10px;
  background: var(--white);
}

.deco-cloud::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 10px;
  width: 20px;
  height: 10px;
  background: var(--white);
}

/* ── Media Placeholder (loading) ─────────────────────────────────────────── */

.timeline__media-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--pink-pastel), var(--peach));
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline__media-placeholder::after {
  content: '';
  width: 28px;
  height: 28px;
  border: 3px solid var(--pink-soft);
  border-top-color: var(--pink-medium);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ── Media Error Placeholder ─────────────────────────────────────────────── */

.timeline__media-error {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--pink-pastel), var(--peach));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--sp-xs);
}

.timeline__media-error::before {
  content: '';
  display: block;
  width: 20px;
  height: 18px;
  background: var(--pink-soft);
  clip-path: path('M10 18 C10 18 0 11 0 5.5 C0 2.5 2 0 5 0 C7 0 9 1.5 10 3.5 C11 1.5 13 0 15 0 C18 0 20 2.5 20 5.5 C20 11 10 18 10 18Z');
  opacity: 0.6;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  5. ANIMATIONS                                                         ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

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

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

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

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

@keyframes float-slow {
  0%, 100% { transform: translateY(0) translateX(0); }
  33%      { transform: translateY(-6px) translateX(4px); }
  66%      { transform: translateY(-3px) translateX(-3px); }
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50%      { opacity: 1;   transform: scale(1.2); }
}

@keyframes drift {
  0%   { transform: translateX(0); }
  100% { transform: translateX(50px); }
}

@keyframes pulse-soft {
  0%, 100% { transform: scale(1);    opacity: 0.7; }
  50%      { transform: scale(1.15); opacity: 1; }
}

@keyframes gentle-bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-4px); }
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  6. OPENING SECTION                                                    ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

.opening {
  position: relative;
  background: var(--gradient-bg);
  overflow: hidden;
}

/* ── Dekorasi posisi ─── */

.opening__deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.opening__deco .deco-cloud:nth-child(1) {
  top: 12%;
  left: 8%;
  animation: drift 18s linear infinite alternate, float-slow 6s ease-in-out infinite;
  opacity: 0.3;
}

.opening__deco .deco-cloud:nth-child(2) {
  top: 20%;
  right: 12%;
  animation: drift 22s linear infinite alternate-reverse, float-slow 8s ease-in-out infinite;
  opacity: 0.22;
  transform: scale(1.3);
}

.opening__deco .deco-cloud:nth-child(3) {
  bottom: 28%;
  left: 15%;
  animation: drift 15s linear infinite alternate, float-slow 7s ease-in-out infinite;
  opacity: 0.18;
  transform: scale(0.8);
}

.opening__deco .deco-heart:nth-child(4) {
  bottom: 22%;
  left: 12%;
  animation: float 4s ease-in-out infinite, pulse-soft 3s ease-in-out infinite;
}

.opening__deco .deco-heart:nth-child(5) {
  bottom: 28%;
  right: 15%;
  animation: float 5s ease-in-out infinite 1s, pulse-soft 4s ease-in-out infinite;
}

.opening__deco .deco-heart:nth-child(6) {
  top: 18%;
  right: 22%;
  animation: float 3.5s ease-in-out infinite 0.5s;
  transform: scale(0.7);
}

.opening__deco .deco-sparkle:nth-child(7) {
  top: 25%;
  left: 20%;
  animation: twinkle 2.5s ease-in-out infinite;
}

.opening__deco .deco-sparkle:nth-child(8) {
  top: 35%;
  right: 18%;
  animation: twinkle 3s ease-in-out infinite 0.8s;
}

.opening__deco .deco-sparkle:nth-child(9) {
  bottom: 35%;
  right: 30%;
  animation: twinkle 2s ease-in-out infinite 1.5s;
}

.opening__deco .deco-sparkle:nth-child(10) {
  bottom: 18%;
  left: 35%;
  animation: twinkle 2.8s ease-in-out infinite 0.3s;
}

/* ── Konten Opening ─── */

.opening__content {
  position: relative;
  text-align: center;
  z-index: var(--z-content);
}

.opening__title {
  /* Judul Opening sengaja lebih besar untuk hero impression */
  font-size: clamp(2.25rem, 1.5rem + 3vw, 3.5rem);
  text-shadow: 2px 2px 0px var(--pink-soft);
  margin-bottom: var(--sp-lg);
  opacity: 0;
}

.opening.is-active .opening__title {
  animation: fadeInUp var(--dur-slower) var(--ease-out) 300ms both;
}

.opening__subtitle {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  max-width: 300px;
  line-height: var(--lh-relaxed);
  opacity: 0;
}

.opening.is-active .opening__subtitle {
  animation: fadeInUp var(--dur-slower) var(--ease-out) 650ms both;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  7. TIMELINE SECTION                                                   ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

.timeline {
  background: var(--gradient-bg);
}

.timeline .section__inner {
  flex: 1;
  min-height: 0;
}

/* ── Scenes Container ─── */

.timeline__scenes {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  overflow: hidden;
}

/* ── Individual Scene ─── */

/*
   Scene menggunakan safe centering:
   margin-top:auto pada date + margin-bottom:auto pada dialog
   mendistribusikan ruang kosong secara merata saat konten muat.
   Saat konten overflow, margin auto = 0 sehingga scroll dimulai
   dari atas dan seluruh konten tetap terjangkau.
*/
.timeline__scene {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-xs) 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  opacity: 0;
  transform: translateX(40px);
  visibility: hidden;
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out),
    visibility var(--dur-slow) var(--ease-out);
}

.timeline__scene.is-active {
  opacity: 1;
  transform: translateX(0);
  visibility: visible;
}

.timeline__scene.is-exiting-left {
  opacity: 0;
  transform: translateX(-40px);
  visibility: hidden;
}

.timeline__scene.is-exiting-right {
  opacity: 0;
  transform: translateX(40px);
  visibility: hidden;
}

/* Scrollbar styling (selaras tema pastel) */
.timeline__scene,
.ending__card {
  scrollbar-width: thin;
  scrollbar-color: var(--pink-soft) transparent;
}

.timeline__scene::-webkit-scrollbar,
.ending__card::-webkit-scrollbar {
  width: 4px;
}

.timeline__scene::-webkit-scrollbar-thumb,
.ending__card::-webkit-scrollbar-thumb {
  background: var(--pink-soft);
  border-radius: 2px;
}

.timeline__scene::-webkit-scrollbar-track,
.ending__card::-webkit-scrollbar-track {
  background: transparent;
}

/* ── Scene components ─── */

.timeline__date {
  align-self: flex-start;
  flex-shrink: 0;
  margin-top: auto; /* Safe centering: dorong konten ke bawah saat ada ruang */
}

.timeline__media {
  width: 100%;
  flex-shrink: 0;
}

.timeline__media .pixel-frame {
  width: 100%;
}

.timeline__dialog {
  width: 100%;
  flex-shrink: 0;
  margin-bottom: auto; /* Safe centering: dorong konten ke atas saat ada ruang */
}

/* ── Video player ─── */

.timeline__video-wrapper {
  position: relative;
}

.timeline__video-wrapper video {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--text-primary);
}

.timeline__video-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--overlay);
  transition: opacity var(--dur-fast) var(--ease-out);
  z-index: 1;
}

.timeline__video-play.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.timeline__video-play-icon {
  width: 48px;
  height: 48px;
  background: var(--pink-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-pixel);
}

.timeline__video-play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 8px 0 8px 14px;
  border-color: transparent transparent transparent var(--white);
  margin-left: 3px;
}

/* ── Scene entrance animations ─── */

.timeline__scene.is-active .pixel-date {
  animation: fadeInUp var(--dur-slow) var(--ease-out) 100ms both;
}

.timeline__scene.is-active .pixel-frame {
  animation: scaleIn var(--dur-slow) var(--ease-out) 200ms both;
}

.timeline__scene.is-active .pixel-dialog {
  animation: fadeInUp var(--dur-slow) var(--ease-out) 350ms both;
}

/* ── Timeline decorations ─── */

.timeline__deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-bg);
}

.timeline__deco .deco-sparkle:nth-child(1) {
  top: 8%;
  right: 10%;
  animation: twinkle 3s ease-in-out infinite;
}

.timeline__deco .deco-sparkle:nth-child(2) {
  bottom: 12%;
  left: 8%;
  animation: twinkle 2.5s ease-in-out infinite 1s;
}

.timeline__deco .deco-heart:nth-child(3) {
  top: 5%;
  left: 5%;
  animation: float 4s ease-in-out infinite;
  transform: scale(0.6);
  opacity: 0.45;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  8. ENDING SECTION                                                     ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

.ending {
  background: var(--gradient-bg);
  overflow: hidden;
}

/* Cards container — sama pola-nya dengan .timeline__scenes */
.ending .section__inner {
  flex: 1;
  min-height: 0;
}

.ending__cards {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  overflow: hidden;
}

/* Individual card — sama pola-nya dengan .timeline__scene */
.ending__card {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-lg);
  padding: var(--sp-md) 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;

  /* Transisi antar card */
  opacity: 0;
  transform: translateX(40px);
  visibility: hidden;
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out),
    visibility var(--dur-slow) var(--ease-out);
}

/* Safe centering: spacer yang collapse saat overflow */
.ending__card::before,
.ending__card::after {
  content: '';
  flex: 1;
}

.ending__card.is-active {
  opacity: 1;
  transform: translateX(0);
  visibility: visible;
}

.ending__card.is-exiting-left {
  opacity: 0;
  transform: translateX(-40px);
  visibility: hidden;
}

.ending__card.is-exiting-right {
  opacity: 0;
  transform: translateX(40px);
  visibility: hidden;
}

/* ── Ending decorations ─── */

.ending__deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-deco);
}

.ending__deco .deco-heart:nth-child(1) {
  top: 8%;
  left: 15%;
  animation: float 4s ease-in-out infinite, pulse-soft 3s ease-in-out infinite;
}

.ending__deco .deco-heart:nth-child(2) {
  top: 12%;
  right: 18%;
  animation: float 5s ease-in-out infinite 0.5s, pulse-soft 4s ease-in-out infinite;
}

.ending__deco .deco-heart:nth-child(3) {
  bottom: 20%;
  left: 10%;
  animation: float 3.5s ease-in-out infinite 1s;
  transform: scale(0.7);
}

.ending__deco .deco-heart:nth-child(4) {
  bottom: 25%;
  right: 12%;
  animation: float 4.5s ease-in-out infinite 1.5s;
  transform: scale(0.8);
}

.ending__deco .deco-sparkle:nth-child(5) {
  top: 18%;
  left: 30%;
  animation: twinkle 2.5s ease-in-out infinite;
}

.ending__deco .deco-sparkle:nth-child(6) {
  top: 6%;
  right: 30%;
  animation: twinkle 3s ease-in-out infinite 0.8s;
}

.ending__deco .deco-sparkle:nth-child(7) {
  bottom: 30%;
  left: 25%;
  animation: twinkle 2s ease-in-out infinite 1.5s;
}

.ending__deco .deco-sparkle:nth-child(8) {
  bottom: 15%;
  right: 25%;
  animation: twinkle 2.8s ease-in-out infinite 0.3s;
}

/* ── Ending content ─── */

.ending__title {
  text-shadow: 2px 2px 0px var(--pink-soft);
  text-align: center;
  position: relative;
  z-index: var(--z-content);
  flex-shrink: 0;
  opacity: 0;
}

.ending__card.is-active .ending__title {
  animation: fadeInUp var(--dur-slow) var(--ease-out) 100ms both;
}

.ending__letter {
  width: 100%;
  position: relative;
  z-index: var(--z-content);
  flex-shrink: 0;
  opacity: 0;
}

.ending__card.is-active .ending__letter {
  animation: fadeInUp var(--dur-slow) var(--ease-out) 250ms both;
}

.ending__letter .pixel-dialog {
  padding: var(--sp-xl) var(--sp-lg);
}

.ending__letter-text {
  font-size: var(--fs-base);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
  white-space: pre-line;
}

.ending__closing {
  font-family: var(--font-pixel);
  font-size: var(--fs-md);
  color: var(--text-primary);
  text-align: center;
  position: relative;
  z-index: var(--z-content);
  flex-shrink: 0;
  opacity: 0;
}

.ending__card.is-active .ending__closing {
  animation: fadeInUp var(--dur-slow) var(--ease-out) 400ms both;
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  9. RESPONSIVE                                                         ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

/* ── HP kecil (< 375px) ─── */

@media (max-width: 374px) {
  :root {
    --content-padding: var(--sp-md);
    --nav-height: 64px;
  }

  .opening__title {
    font-size: clamp(1.75rem, 6vw, 2.25rem);
  }

  .pixel-dialog {
    padding: var(--sp-sm) var(--sp-md);
  }

  .ending__letter .pixel-dialog {
    padding: var(--sp-md);
  }

  .nav__btn {
    min-width: 60px;
    padding: 8px 16px;
    font-size: var(--fs-xs);
  }

  .music-toggle {
    width: 32px;
    height: 32px;
  }
}

/* ── HP besar (430px+) ─── */

/* aspect-ratio dihapus: media menyesuaikan aspect ratio asli foto */

/* ── Tablet kecil (576px+) ─── */

@media (min-width: 576px) {
  :root {
    --content-padding: var(--sp-xl);
  }

  .opening__subtitle {
    max-width: 360px;
  }

  .pixel-dialog {
    padding: var(--sp-lg) var(--sp-xl);
  }

  .timeline__scene {
    gap: var(--sp-md);
  }
}

/* ── Tablet (768px+) ─── */

@media (min-width: 768px) {
  :root {
    --content-padding: var(--sp-2xl);
    --container-max:   520px;
    --nav-height:      80px;
  }

  .opening__subtitle {
    max-width: 400px;
  }

  .pixel-frame {
    padding: 6px;
  }

  .nav {
    padding: var(--sp-lg) var(--sp-2xl);
  }

  .nav__btn {
    padding: 10px 28px;
    font-size: var(--fs-sm);
  }

  .ending__letter .pixel-dialog {
    padding: var(--sp-xl);
  }
}

/* ── Desktop (1024px+) ─── */

@media (min-width: 1024px) {
  :root {
    --container-max: 520px;
  }

  body {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Latar ambient di luar app container */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
      radial-gradient(ellipse at 25% 40%, rgba(255, 214, 224, 0.3) 0%, transparent 55%),
      radial-gradient(ellipse at 75% 60%, rgba(255, 229, 212, 0.3) 0%, transparent 55%),
      linear-gradient(170deg, #FFF0F3 0%, #FFF8F0 50%, #FFFFFF 100%);
    z-index: -1;
  }

  #app {
    max-width: var(--container-max);
    height: 92vh;
    max-height: 800px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow:
      0 20px 60px -15px rgba(92, 61, 78, 0.15),
      0 0 0 1px rgba(255, 173, 198, 0.2);
  }

  /* Ending section inherits rounded corners dari parent */
  .ending {
    border-radius: 0 0 20px 20px;
  }

  /* Nav di desktop lebih lebar */
  .nav {
    padding-left: var(--sp-xl);
    padding-right: var(--sp-xl);
  }

  .music-toggle {
    top: var(--sp-lg);
    right: var(--sp-lg);
  }
}

/* ── Desktop besar (1440px+) ─── */

@media (min-width: 1440px) {
  :root {
    --container-max: 560px;
  }

  #app {
    max-height: 820px;
    border-radius: 24px;
    box-shadow:
      0 25px 80px -20px rgba(92, 61, 78, 0.18),
      0 0 0 1px rgba(255, 173, 198, 0.15);
  }

  .ending {
    border-radius: 0 0 24px 24px;
  }
}

/* ── Layar pendek / landscape HP (≤ 500px tinggi) ─── */

@media (max-height: 500px) {
  :root {
    --nav-height: 56px;
    --content-padding: var(--sp-md);
  }

  .opening__title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: var(--sp-md);
  }

  .opening__subtitle {
    font-size: var(--fs-sm);
  }

  .timeline__scene {
    gap: var(--sp-2xs);
  }

  .pixel-dialog {
    padding: var(--sp-xs) var(--sp-sm);
  }

  .pixel-dialog__title {
    font-size: var(--fs-base);
  }

  .ending__card {
    gap: var(--sp-md);
    padding: var(--sp-xs) 0;
  }
}


/* ╔══════════════════════════════════════════════════════════════════════════╗
   ║  10. ACCESSIBILITY                                                     ║
   ╚══════════════════════════════════════════════════════════════════════════╝ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* ── Fix: elemen dengan base opacity:0 yang bergantung pada animasi ── */
  /* Tanpa override ini, elemen tetap invisible saat reduced-motion aktif */

  /* Opening */
  .opening__title,
  .opening__subtitle {
    opacity: 1 !important;
    transform: none !important;
  }

  /* Timeline scene children */
  .timeline__scene.is-active .pixel-date,
  .timeline__scene.is-active .pixel-frame,
  .timeline__scene.is-active .pixel-dialog {
    opacity: 1 !important;
    transform: none !important;
  }

  /* Ending */
  .ending__title,
  .ending__letter,
  .ending__closing {
    opacity: 1 !important;
    transform: none !important;
  }
}