/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
  --color-primary: #E89AAA;
  --color-primary-light: #F5C6D0;
  --color-primary-dark: #C47A88;
  --color-primary-deep: #8B4B56;
  --color-accent: #B5C8B0;
  --color-bg: #FEF5F7;
  --color-bg-light: #FFFAFB;
  --color-white: #ffffff;
  --color-text: #4A3238;
  --color-text-light: #8B6A74;
  --color-text-lighter: #C4A0A8;

  --font-serif: 'Noto Serif SC', 'ZCOOL XiaoWei', 'Songti SC', 'SimSun', serif;
  --font-default: 'Noto Serif SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --shadow-sm: 0 2px 8px rgba(107, 58, 68, 0.08);
  --shadow-md: 0 4px 20px rgba(107, 58, 68, 0.12);
  --shadow-lg: 0 8px 40px rgba(107, 58, 68, 0.16);
  --shadow-glow: 0 0 30px rgba(232, 154, 170, 0.3);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-default);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--color-primary-deep);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.section-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--color-text-light);
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: 0.03em;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
  position: fixed;
  top: 50%;
  right: 28px;
  transform: translateY(-50%);
  z-index: 100;
}

.nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--color-text-light);
  opacity: 0.5;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
  flex-direction: row-reverse;
}

.nav__link::after {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary-light);
  transition: var(--transition);
  flex-shrink: 0;
  box-shadow: 0 0 0 0 rgba(232, 154, 170, 0);
}

.nav__link-name {
  opacity: 0;
  transform: translateX(8px);
  transition: var(--transition);
  pointer-events: none;
}

.nav__link:hover .nav__link-name,
.nav__link--active .nav__link-name {
  opacity: 1;
  transform: translateX(0);
}

.nav__link:hover,
.nav__link--active {
  opacity: 1;
  color: var(--color-primary-deep);
}

.nav__link:hover::after,
.nav__link--active::after {
  background: var(--color-primary);
  transform: scale(1.3);
}

.nav__link--active::after {
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(232, 154, 170, 0.4);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  width: 100%;
  min-height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(180deg,
    var(--color-bg-light) 0%,
    var(--color-bg) 40%,
    var(--color-primary-light) 100%);
}

.hero__canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero__content {
  text-align: center;
  z-index: 10;
  animation: fadeInUp 1.2s ease;
}

.hero__subtitle {
  font-size: clamp(1rem, 3vw, 1.4rem);
  color: var(--color-primary-dark);
  letter-spacing: 0.2em;
  margin-bottom: 12px;
  font-weight: 300;
}

.hero__title {
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  font-weight: 700;
  color: var(--color-primary-deep);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero__title-line {
  display: block;
}

.hero__title-line--large {
  font-size: 1.3em;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  color: var(--color-text-light);
  letter-spacing: 0.08em;
  margin-bottom: 48px;
}

.hero__scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-lighter);
  font-size: 0.85rem;
  animation: bounce 2s infinite;
  letter-spacing: 0.05em;
}

.hero__scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 1.5px solid var(--color-text-lighter);
  border-bottom: 1.5px solid var(--color-text-lighter);
  transform: rotate(45deg);
}

/* ========================================
   Timer Section
   ======================================== */
.timer {
  padding: 100px 0;
  background: var(--color-white);
  position: relative;
  overflow: hidden;
}

.timer::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 154, 170, 0.15), transparent);
}

.timer::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 198, 208, 0.15), transparent);
}

.timer__display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.timer__unit {
  display: flex;
  gap: 8px;
}

.timer__flip {
  width: clamp(48px, 10vw, 72px);
  height: clamp(64px, 13vw, 96px);
  background: linear-gradient(180deg, var(--color-bg) 50%, var(--color-white) 50%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.timer__flip::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(74, 50, 56, 0.1);
}

.timer__number {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--color-primary-deep);
  font-variant-numeric: tabular-nums;
}

.timer__label {
  font-size: clamp(1.2rem, 3vw, 2rem);
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-left: 4px;
  position: relative;
  z-index: 1;
}

.timer__since {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

/* ========================================
   Vacation Countdown Section
   ======================================== */
.vacation {
  padding: 100px 0;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.vacation::before {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(181, 200, 176, 0.12), transparent);
}

.vacation__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.vacation__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(232, 154, 170, 0.1);
  position: relative;
  overflow: hidden;
}

.vacation__card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s ease;
}

.vacation__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.vacation__card:hover::after {
  transform: scaleX(1);
}

.vacation__card-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
  display: block;
}

.vacation__card-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  margin-bottom: 4px;
}

.vacation__card-date {
  font-size: 0.82rem;
  color: var(--color-text-lighter);
  margin-bottom: 18px;
}

.vacation__card-countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.vacation__card-number {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  min-width: 2ch;
}

.vacation__card-unit {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.vacation__card--soon .vacation__card-number {
  color: var(--color-accent);
}

.vacation__card--passed {
  opacity: 0.6;
}

.vacation__card--passed .vacation__card-number {
  color: var(--color-text-lighter);
}

/* ========================================
   Gallery Section
   ======================================== */
.gallery {
  padding: 100px 0;
  background: var(--color-bg);
}

.gallery__grid {
  column-count: 4;
  column-gap: 8px;
  column-fill: balance;
}

.gallery__item {
  break-inside: avoid;
  margin-bottom: 8px;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.gallery__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gallery__item-real {
  width: 100%;
  height: auto;
  display: block;
}

.gallery__item-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(transparent, rgba(107, 58, 68, 0.7));
  color: var(--color-white);
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
}

.gallery__item:hover .gallery__item-overlay {
  opacity: 1;
  transform: translateY(0);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(40, 20, 28, 0.95);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.lightbox--active {
  display: flex;
}

.lightbox__img {
  max-width: 85%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  object-fit: contain;
  object-position: 50% 30%;
}

.lightbox__caption {
  position: absolute;
  bottom: 40px;
  color: var(--color-white);
  font-size: 1rem;
  opacity: 0.8;
}

.lightbox__close {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 2.5rem;
  color: var(--color-white);
  background: none;
  opacity: 0.7;
  transition: var(--transition);
}

.lightbox__close:hover {
  opacity: 1;
  transform: scale(1.1);
}

.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  color: var(--color-white);
  background: none;
  padding: 16px;
  opacity: 0.6;
  transition: var(--transition);
}

.lightbox__prev { left: 16px; }
.lightbox__next { right: 16px; }

.lightbox__prev:hover,
.lightbox__next:hover {
  opacity: 1;
}

/* ========================================
   Timeline Section
   ======================================== */
.timeline-section {
  padding: 100px 0;
  background: var(--color-white);
  position: relative;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg,
    var(--color-primary-light),
    var(--color-primary),
    var(--color-primary-dark));
  transform: translateX(-50%);
}

.timeline__item {
  position: relative;
  width: 50%;
  padding: 0 40px 48px;
}

.timeline__item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline__item:nth-child(even) {
  left: 50%;
  text-align: left;
}

.timeline__item::before {
  content: '';
  position: absolute;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  z-index: 1;
  box-shadow: 0 0 12px rgba(232, 154, 170, 0.4);
}

.timeline__item:nth-child(odd)::before {
  right: -7px;
}

.timeline__item:nth-child(even)::before {
  left: -7px;
}

.timeline__date {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.timeline__card {
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(232, 154, 170, 0.15);
}

.timeline__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.timeline__card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  margin-bottom: 6px;
}

.timeline__card-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========================================
   Food Section
   ======================================== */
.food {
  padding: 100px 0;
  background: var(--color-bg);
  position: relative;
}

.food__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.food__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-slow);
  cursor: default;
}

.food__card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.food__card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.food__card:hover .food__card-img {
  transform: scale(1.05);
}

.food__card-img--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
}

.food__card-placeholder-icon {
  font-size: 3rem;
  opacity: 0.5;
  transition: transform 0.6s ease;
}

.food__card:hover .food__card-placeholder-icon {
  transform: scale(1.3) rotate(-10deg);
}

.food__card-real {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 35%;
}

.food__card-body {
  padding: 20px;
}

.food__card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  margin-bottom: 6px;
}

.food__card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--color-text-lighter);
  margin-bottom: 8px;
}

.food__card-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========================================
   Letter Section
   ======================================== */
.letter {
  padding: 100px 0;
  background: var(--color-white);
  position: relative;
}

.letter::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(232, 154, 170, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(245, 198, 208, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.letter__cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  position: relative;
  z-index: 1;
}

.letter__envelope {
  perspective: 1000px;
  height: 280px;
  cursor: pointer;
}

.letter__envelope-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.letter__envelope--open .letter__envelope-inner {
  transform: rotateY(180deg);
}

.letter__envelope-front,
.letter__envelope-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.letter__envelope-front {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.letter__envelope-stamp {
  font-size: 2rem;
  margin-bottom: 16px;
}

.letter__envelope-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.letter__envelope-hint {
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: 12px;
}

.letter__envelope-back {
  transform: rotateY(180deg);
  background: var(--color-bg-light);
  padding: 32px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(232, 154, 170, 0.2);
  overflow-y: auto;
}

.letter__envelope-back h3 {
  font-size: 1.1rem;
  color: var(--color-primary-deep);
  margin-bottom: 12px;
}

.letter__envelope-back p {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.8;
  flex: 1;
  overflow-y: auto;
}

/* ========================================
   Flowers Section
   ======================================== */
.flowers {
  padding: 100px 0;
  background: var(--color-white);
}

.flowers__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.flowers__card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  width: 100%;
  padding-bottom: 133%;
}

.flowers__card-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
}

.flowers__card-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(transparent, rgba(107, 58, 68, 0.65));
  color: var(--color-white);
  font-size: 0.9rem;
}

/* ========================================
   Music Section
   ======================================== */
.music {
  padding: 100px 0;
  background: var(--color-bg);
}

.music__player {
  max-width: 560px;
  margin: 0 auto 48px;
}

.music__player-inner {
  background: linear-gradient(135deg, var(--color-white), var(--color-bg-light));
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
  text-align: center;
  border: 1px solid rgba(232, 154, 170, 0.15);
}

.music__disc {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  margin: 0 auto 24px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  animation: none;
  will-change: transform;
}

.music__disc--playing {
  animation: spin 8s linear infinite;
}

.music__disc-cover {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.music__disc-cover::after {
  content: '';
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-bg);
  position: absolute;
}

.music__info {
  margin-bottom: 24px;
}

.music__title {
  font-size: 1.2rem;
  color: var(--color-primary-deep);
  margin-bottom: 4px;
}

.music__artist {
  font-size: 0.9rem;
  color: var(--color-text-lighter);
}

.music__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
}

.music__btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-primary-deep);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.music__btn:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
}

.music__btn--play {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  font-size: 1.3rem;
  box-shadow: var(--shadow-md);
}

.music__btn--play:hover {
  transform: scale(1.08);
  box-shadow: var(--shadow-glow);
}

.music__progress {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.music__time {
  font-size: 0.75rem;
  color: var(--color-text-lighter);
  min-width: 36px;
  font-variant-numeric: tabular-nums;
}

.music__progress-bar {
  flex: 1;
  height: 6px;
  background: rgba(232, 154, 170, 0.2);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
}

.music__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: 3px;
  width: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  transition: none;
  position: relative;
  will-change: transform;
}

.music__progress-fill::after {
  content: '';
  position: absolute;
  right: -6px;
  top: -3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0;
  transition: opacity 0.2s;
}

.music__progress-bar:hover .music__progress-fill::after {
  opacity: 1;
}

.music__volume {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.music__volume-icon {
  font-size: 1rem;
}

.music__volume-slider {
  width: 120px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(232, 154, 170, 0.25);
  border-radius: 2px;
  outline: none;
}

.music__volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
}

.music__section-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary-deep);
  text-align: center;
  margin-bottom: 20px;
  margin-top: 12px;
  letter-spacing: 0.05em;
}

.music__playlist,
.music__recordings {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.music__track {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.music__track:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(90deg, var(--color-bg-light), var(--color-white));
}

.music__track--active {
  border-left: 3px solid var(--color-primary);
  background: var(--color-bg-light);
}

.music__track-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.music__track--active .music__track-num {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
}

.music__track-info {
  flex: 1;
  min-width: 0;
}

.music__track-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music__track-artist {
  font-size: 0.78rem;
  color: var(--color-text-lighter);
}

.music__track--active .music__track-title {
  color: var(--color-primary-deep);
}

.music__recording {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.music__recording:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.music__recording-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.music__recording-info {
  flex: 1;
  min-width: 0;
}

.music__recording-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music__recording-date {
  font-size: 0.78rem;
  color: var(--color-text-lighter);
}

.music__recording-play {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
  flex-shrink: 0;
}

.music__recording-play:hover {
  background: var(--color-primary);
  transform: scale(1.1);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(180deg, var(--color-white), var(--color-bg));
  position: relative;
}

.footer__text {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--color-primary-deep);
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.footer__subtext {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.footer__heart {
  font-size: 2rem;
  color: var(--color-primary);
  animation: heartbeat 1.5s ease infinite;
}

/* ========================================
   Back to Top
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-primary-deep);
  font-size: 1.3rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 90;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* ========================================
   Heart Click Animation
   ======================================== */
.heart-particle {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  animation: heartFloat 1s ease-out forwards;
  font-size: 1.5rem;
  user-select: none;
}

/* ========================================
   Scroll Reveal
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ========================================
   Keyframes
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  15% { transform: scale(1.25); }
  30% { transform: scale(1); }
  45% { transform: scale(1.15); }
  60% { transform: scale(1); }
}

@keyframes heartFloat {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1) rotate(0deg);
  }
  50% {
    transform: translateY(-60px) scale(1.3) rotate(15deg);
  }
  100% {
    opacity: 0;
    transform: translateY(-120px) scale(0.5) rotate(-15deg);
  }
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 1024px) {
  .gallery__grid {
    column-count: 3;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline__item {
    width: 100%;
    padding-left: 50px;
    padding-right: 0;
    left: 0 !important;
    text-align: left !important;
  }

  .timeline__item:nth-child(odd)::before,
  .timeline__item:nth-child(even)::before {
    left: 14px !important;
    right: auto !important;
  }
  .flowers__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   Responsive - Mobile
   ======================================== */
@media (max-width: 768px) {
  .nav {
    right: auto;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    transform: translateZ(0);
    background: rgba(255, 255, 255, 0.97);
    border-top: 1px solid rgba(232, 154, 170, 0.2);
    padding: 6px 0;
    will-change: transform;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .nav__list {
    flex-direction: row;
    justify-content: space-around;
    gap: 0;
  }

  .nav__link {
    gap: 2px;
    font-size: 0.68rem;
    opacity: 0.6;
    flex-direction: column-reverse;
  }

  .nav__link::after {
    width: 5px;
    height: 5px;
  }

  .nav__link--active::after {
    animation: none;
    box-shadow: 0 0 8px rgba(232, 154, 170, 0.5);
  }

  .nav__link-name {
    opacity: 1;
    transform: none;
  }

  .gallery__grid {
    column-count: 2;
    column-gap: 6px;
  }

  .gallery__item {
    margin-bottom: 6px;
  }

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

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

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

  .music__player-inner {
    padding: 28px 20px;
  }

  .music__disc {
    width: 120px;
    height: 120px;
  }

  .music__playlist,
  .music__recordings {
    grid-template-columns: 1fr;
  }

  .back-to-top {
    bottom: 90px;
    right: 16px;
  }

  .section-title {
    margin-bottom: 8px;
  }

  .section-desc {
    margin-bottom: 32px;
  }

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

  .timer,
  .vacation,
  .gallery,
  .timeline-section,
  .food,
  .letter,
  .flowers,
  .music {
    padding: 60px 0;
  }
}

/* ========================================
   Memory Card
   ======================================== */
.memory-card {
  position: fixed;
  bottom: 100px;
  right: 20px;
  z-index: 900;
  width: 280px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px) scale(0.9);
  transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.memory-card--active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.memory-card__close {
  position: absolute;
  top: 8px;
  right: 12px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.1);
  color: var(--color-text-light);
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.memory-card__inner {
  padding: 16px;
}

.memory-card__label {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.memory-card__text {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 10px;
}

.memory-card__img {
  width: 100%;
  border-radius: var(--radius-sm);
  max-height: 160px;
  object-fit: cover;
}