/* ==========================================================================
   styles.css — visual design only. All content lives in data.js.
   ========================================================================== */

:root {
  --bg-base: #16131a;
  --bg-base-2: #1c1620;
  --bg-base-3: #221a1f;

  --accent-rose: #e0a3a0;
  --accent-gold: #d9b98a;
  --accent-blush: #e7c2c9;

  --text-primary: #f3ece6;
  --text-secondary: #cfc3bd;
  --text-muted: #9c8f8c;

  --glass-bg: rgba(255, 255, 255, 0.055);
  --glass-bg-strong: rgba(255, 255, 255, 0.09);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);

  --paper-bg: rgba(247, 232, 214, 0.07);
  --paper-border: rgba(247, 232, 214, 0.18);

  --font-heading: "Playfair Display", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-hand: "Dancing Script", cursive;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 300ms;
  --dur-slow: 500ms;

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* -------------------------------------------------------------------- */
/* Animated background                                                   */
/* -------------------------------------------------------------------- */

.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 15%, rgba(224, 163, 160, 0.16), transparent 60%),
    radial-gradient(ellipse 70% 60% at 85% 25%, rgba(217, 185, 138, 0.12), transparent 60%),
    radial-gradient(ellipse 90% 70% at 50% 90%, rgba(150, 110, 140, 0.14), transparent 65%),
    linear-gradient(160deg, var(--bg-base), var(--bg-base-2) 50%, var(--bg-base-3));
  background-size: 200% 200%, 200% 200%, 200% 200%, 100% 100%;
  animation: drift 42s ease-in-out infinite alternate;
}

@keyframes drift {
  0%   { background-position: 0% 0%, 100% 0%, 50% 100%, 0 0; }
  50%  { background-position: 30% 20%, 70% 30%, 40% 80%, 0 0; }
  100% { background-position: 10% 30%, 90% 10%, 60% 70%, 0 0; }
}

/* -------------------------------------------------------------------- */
/* Layout & sections                                                     */
/* -------------------------------------------------------------------- */

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 96px 0;
}

.section-heading {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: center;
  margin: 0 0 48px;
  color: var(--text-primary);
}

/* -------------------------------------------------------------------- */
/* Glass building block                                                  */
/* -------------------------------------------------------------------- */

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--glass-shadow);
}

/* -------------------------------------------------------------------- */
/* Scroll reveal (fade-and-rise)                                         */
/* -------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
  .bg-gradient {
    animation: none;
  }
}

/* -------------------------------------------------------------------- */
/* 1. Hero                                                                */
/* -------------------------------------------------------------------- */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 48px;
  padding-bottom: 48px;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 10px;
}

.hero-date {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 3.5vw, 1.9rem);
  color: var(--accent-blush);
  margin: 0 0 44px;
  letter-spacing: 0.02em;
}

.countup {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  width: 100%;
  max-width: 620px;
}

.countup-tile {
  padding: 18px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--glass-shadow);
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.countup-tile:hover {
  transform: translateY(-4px);
  background: var(--glass-bg-strong);
}

.countup-number {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.countup-label {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.scroll-indicator {
  margin-top: 56px;
  width: 22px;
  height: 36px;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
  cursor: pointer;
}

.scroll-indicator span {
  width: 3px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent-rose);
  animation: scroll-dot 1.8s ease-in-out infinite;
}

@keyframes scroll-dot {
  0%   { transform: translateY(0); opacity: 1; }
  70%  { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-indicator span { animation: none; }
}

/* -------------------------------------------------------------------- */
/* 2. Gallery + Lightbox                                                  */
/* -------------------------------------------------------------------- */

.gallery-grid {
  columns: 2;
  column-gap: 16px;
}

@media (min-width: 640px) {
  .gallery-grid { columns: 3; }
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 16px;
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.gallery-item:hover,
.gallery-item:focus-visible {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

.gallery-item img,
.gallery-item video {
  display: block;
  width: 100%;
  height: auto;
}

.gallery-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.gallery-play svg {
  width: 46px;
  height: 46px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
}

.gallery-empty,
.plans-empty,
.capsules-empty {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 20px;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(12, 9, 13, 0.78);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  padding: 24px;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease);
}

.lightbox[hidden] {
  display: none;
}

.lightbox.is-open {
  opacity: 1;
}

.lightbox-content {
  max-width: min(90vw, 800px);
  max-height: 74vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content img,
.lightbox-content video {
  max-width: 100%;
  max-height: 74vh;
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.lightbox-caption {
  margin-top: 18px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 600px;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.lightbox-close:hover,
.lightbox-nav:hover {
  background: var(--glass-bg-strong);
  transform: translateY(-2px);
}

.lightbox-close {
  top: 20px;
  right: 20px;
}

.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); }

@media (max-width: 640px) {
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}

/* -------------------------------------------------------------------- */
/* 3. Plans & Memories                                                    */
/* -------------------------------------------------------------------- */

.plans-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 800px) {
  .plans-columns { grid-template-columns: 1fr 1fr; }
}

.plans-column-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent-blush);
  margin: 0 0 18px;
  text-align: center;
}

.plans-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.plan-card {
  padding: 18px 20px;
  border-radius: 16px;
}

.plan-card-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.plan-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin: 0;
  color: var(--text-primary);
}

.plan-meta {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.plan-note {
  margin: 8px 0 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.plan-card.is-today {
  border-color: var(--accent-rose);
  box-shadow: 0 0 0 1px rgba(224, 163, 160, 0.4), 0 0 32px rgba(224, 163, 160, 0.25);
}

.plan-today-label {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bg-base);
  background: var(--accent-rose);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 8px;
}

/* -------------------------------------------------------------------- */
/* 4. Reasons                                                             */
/* -------------------------------------------------------------------- */

.reason-card {
  max-width: 620px;
  margin: 0 auto;
  padding: 52px 36px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
}

.reason-text {
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  line-height: 1.5;
  color: var(--text-primary);
  margin: 0;
  transition: opacity var(--dur-slow) var(--ease);
}

.reason-text.is-fading {
  opacity: 0;
}

.shuffle-btn {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 10px 22px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.shuffle-btn:hover {
  background: var(--glass-bg-strong);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* -------------------------------------------------------------------- */
/* 5. Our Song                                                            */
/* -------------------------------------------------------------------- */

.song-card {
  max-width: 560px;
  margin: 0 auto;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.song-top {
  display: flex;
  gap: 18px;
  align-items: center;
}

.song-cover {
  width: 88px;
  height: 88px;
  border-radius: 14px;
  object-fit: cover;
  border: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.song-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin: 0 0 4px;
  color: var(--text-primary);
}

.song-artist {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.song-why {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.94rem;
  font-style: italic;
  line-height: 1.6;
}

.song-embed iframe {
  width: 100%;
  border: none;
  border-radius: 12px;
}

.song-audio-player {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
}

.song-play-btn {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--accent-rose);
  color: var(--bg-base);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: transform var(--dur-fast) var(--ease);
}

.song-play-btn:hover {
  transform: scale(1.06);
}

.song-audio-progress {
  flex: 1;
  height: 3px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  overflow: hidden;
}

.song-audio-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent-rose);
  transition: width 150ms linear;
}

/* -------------------------------------------------------------------- */
/* 6. Milestones                                                         */
/* -------------------------------------------------------------------- */

.celebration-line {
  text-align: center;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--accent-gold);
  margin: -20px 0 40px;
  animation: celebration-fade 8s ease forwards;
}

@keyframes celebration-fade {
  0%   { opacity: 0; }
  10%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}

.milestones-timeline {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 800px) {
  .milestones-timeline {
    flex-direction: row;
    align-items: stretch;
    gap: 14px;
  }
}

.milestone-card {
  flex: 1;
  padding: 22px 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  position: relative;
}

.milestone-label {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin: 0;
}

.milestone-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.milestone-card.is-reached {
  border-color: var(--accent-gold);
  box-shadow: 0 0 24px rgba(217, 185, 138, 0.22);
}

.milestone-card.is-next {
  border-color: var(--accent-rose);
}

.milestone-countdown {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--accent-rose);
  letter-spacing: 0.04em;
}

.milestone-badge {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

/* -------------------------------------------------------------------- */
/* 7. Anniversary Memory Capsules                                        */
/* -------------------------------------------------------------------- */

.capsules-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.capsule {
  border-radius: 18px;
  overflow: hidden;
}

.capsule-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
}

.capsule-header-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin: 0 0 2px;
}

.capsule-header-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.capsule-chevron {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  transition: transform var(--dur-fast) var(--ease);
}

.capsule.is-open .capsule-chevron {
  transform: rotate(180deg);
}

.capsule-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-slow) var(--ease);
}

.capsule-body-inner {
  padding: 0 24px 24px;
}

.capsule-full-date {
  color: var(--accent-blush);
  font-size: 0.85rem;
  margin: 0 0 10px;
}

.capsule-memory {
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 16px;
}

.capsule-media {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
}

.capsule-media img,
.capsule-media video {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--glass-border);
}

/* -------------------------------------------------------------------- */
/* 8. The Letter                                                         */
/* -------------------------------------------------------------------- */

.letter-panel {
  max-width: 640px;
  margin: 0 auto;
  padding: 52px 40px;
  background: var(--paper-bg);
  border: 1px solid var(--paper-border);
  box-shadow: inset 0 0 60px rgba(247, 232, 214, 0.04), var(--glass-shadow);
}

.letter-text {
  font-family: var(--font-hand);
  font-size: clamp(1.35rem, 3.4vw, 1.7rem);
  line-height: 1.9;
  color: var(--text-primary);
}

.letter-line {
  margin: 0 0 0.35em;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  transition-delay: var(--line-delay, 0ms);
}

.letter-line.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .letter-line {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* -------------------------------------------------------------------- */
/* Footer                                                                 */
/* -------------------------------------------------------------------- */

.footer {
  text-align: center;
  padding: 48px 20px 64px;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

/* -------------------------------------------------------------------- */
/* Celebration canvas (petals)                                           */
/* -------------------------------------------------------------------- */

#celebration-canvas {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
}

/* -------------------------------------------------------------------- */
/* Small screens fine-tuning                                             */
/* -------------------------------------------------------------------- */

@media (max-width: 480px) {
  .section { padding: 72px 0; }
  .countup { gap: 10px; }
  .song-top { flex-direction: column; align-items: flex-start; }
}