:root {
  --color-bg: #fffbf5;
  --color-paper: #fff8ee;
  --color-cream: #fff1e0;
  --color-primary: #a83243;
  --color-primary-light: #d4556a;
  --color-accent: #e88a9a;
  --color-pink: #fcd1d7;
  --color-pink-soft: #fde8ec;
  --color-gold: #c8a276;
  --color-text: #4a3b32;
  --color-text-light: #8b7355;
  --color-muted: #b8a89a;
  --color-shadow: rgba(168, 50, 67, 0.15);
  --shadow-soft: 0 8px 30px rgba(168, 50, 67, 0.12);
  --shadow-card: 0 4px 20px rgba(74, 59, 50, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font-hand: 'STKaiti', 'KaiTi', 'Kaiti SC', '楷体', 'BiauKai', cursive;
  --font-serif: 'Songti SC', 'STSong', 'SimSun', '宋体', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', '微软雅黑', 'Hiragino Sans GB', 'Source Han Sans CN', sans-serif;
}

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

html, body {
  width: 100%;
  min-height: 100vh;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  line-height: 1.75;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

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

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

input, textarea {
  font-family: inherit;
  color: inherit;
  outline: none;
}

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

/* ================= Floating Hearts ================= */
.floating-hearts {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-hearts .float-heart {
  position: absolute;
  bottom: -40px;
  font-size: 20px;
  opacity: 0.5;
  animation: floatUp linear infinite;
}

/* ================= Login Page ================= */
.login-page {
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 20% 10%, #ffe9ec 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, #fff1e0 0%, transparent 50%),
    linear-gradient(180deg, #fffbf5 0%, #fff1e6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 480px;
}

.envelope-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
  perspective: 1000px;
}

.envelope {
  width: 180px;
  height: 120px;
  position: relative;
  transform-style: preserve-3d;
  filter: drop-shadow(0 10px 20px var(--color-shadow));
}

.envelope-body {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #f4b6c1 0%, #e88a9a 100%);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.envelope-body::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 6px;
  background:
    linear-gradient(135deg, transparent 50%, rgba(255,255,255,0.3) 50%) left bottom / 50% 50% no-repeat,
    linear-gradient(-135deg, transparent 50%, rgba(255,255,255,0.3) 50%) right bottom / 50% 50% no-repeat;
}

.envelope-flap {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(135deg, #d4556a 0%, #a83243 100%);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transform-origin: top;
  z-index: 3;
  transition: transform 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.envelope-heart {
  font-size: 38px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.15));
  animation: heartbeat 1.5s ease-in-out infinite;
}

.letter-peek {
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 60px;
  background: #fffaf0;
  border-radius: 3px;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.8s ease;
}

.letter-text-snippet {
  font-family: var(--font-hand);
  color: var(--color-text-light);
  font-size: 14px;
}

.envelope.opening .envelope-flap {
  transform: rotateX(-180deg);
  z-index: 1;
}

.envelope.opening .letter-peek {
  transform: translate(-50%, -40px);
}

.login-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: var(--radius-lg);
  padding: 40px 32px 32px;
  box-shadow: var(--shadow-soft);
}

.login-title {
  font-family: var(--font-hand);
  font-size: 32px;
  text-align: center;
  color: var(--color-primary);
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.title-deco {
  color: var(--color-gold);
  font-size: 18px;
  margin: 0 8px;
  opacity: 0.7;
}

.login-subtitle {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.login-hint {
  text-align: center;
  font-size: 13px;
  color: var(--color-accent);
  font-family: var(--font-hand);
  margin-bottom: 28px;
}

.login-form {
  width: 100%;
}

.input-group {
  margin-bottom: 20px;
}

.input-label {
  display: block;
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  padding-left: 4px;
}

.password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input {
  width: 100%;
  padding: 14px 48px 14px 18px;
  font-size: 16px;
  border: 2px solid var(--color-pink);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  transition: all 0.25s ease;
  letter-spacing: 2px;
}

/* 用 text-security 替代 type=password，避免浏览器禁用中文输入法 */
.password-input.password-masked {
  -webkit-text-security: disc;
  text-security: disc;
}

.password-input:not(.password-masked) {
  -webkit-text-security: none;
  text-security: none;
}

.password-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-pink-soft);
}

.password-input.shake {
  animation: shake 0.4s ease-in-out;
  border-color: #e74c3c;
  box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.15);
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 8px;
  border-radius: 50%;
  opacity: 0.5;
  transition: all 0.2s ease;
}

.toggle-password:hover {
  opacity: 1;
  background: var(--color-pink-soft);
}

.eye-icon {
  font-size: 16px;
}

.error-message {
  min-height: 20px;
  font-size: 13px;
  color: #e74c3c;
  margin-top: 8px;
  padding-left: 4px;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.2s ease;
  font-family: var(--font-hand);
}

.error-message.show {
  opacity: 1;
  transform: translateY(0);
}

.submit-btn {
  width: 100%;
  padding: 15px 24px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(168, 50, 67, 0.3);
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(168, 50, 67, 0.4);
}

.submit-btn:active {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
}

.btn-heart {
  font-size: 18px;
  animation: heartbeat 1.5s ease-in-out infinite;
}

.days-counter {
  margin-top: 24px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.days-label {
  font-size: 13px;
  color: var(--color-text-light);
}

.days-number {
  font-family: var(--font-hand);
  font-size: 28px;
  color: var(--color-primary);
  font-weight: bold;
  line-height: 1;
}

/* ================= Mobile Modal ================= */
.mobile-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(74, 59, 50, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-box {
  position: relative;
  background: var(--color-paper);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  width: 90%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.modal-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.modal-title {
  font-family: var(--font-hand);
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.modal-text {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}

.modal-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-btn {
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.modal-btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
}

.modal-btn-secondary {
  background: var(--color-pink-soft);
  color: var(--color-primary);
}

.modal-btn:hover {
  transform: translateY(-1px);
}

/* ================= Letter Page ================= */
.letter-page {
  background: var(--color-bg);
  background-image:
    radial-gradient(circle at 10% 0%, rgba(252, 209, 215, 0.3) 0%, transparent 40%),
    radial-gradient(circle at 90% 30%, rgba(255, 241, 224, 0.5) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(252, 209, 215, 0.2) 0%, transparent 50%);
}

.mouse-parallax-bg {
  position: fixed;
  inset: -40px;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(232, 138, 154, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(200, 162, 118, 0.08) 0%, transparent 40%);
  z-index: 0;
  pointer-events: none;
  transition: transform 0.3s ease-out;
  will-change: transform;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  z-index: 1000;
  transition: width 0.15s ease-out;
}

/* Top Nav */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 251, 245, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(232, 138, 154, 0.15);
  z-index: 500;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

.top-nav.show {
  transform: translateY(0);
}

.nav-logo {
  font-family: var(--font-hand);
  font-size: 18px;
  color: var(--color-primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-timer {
  font-size: 13px;
  color: var(--color-text-light);
}

.nav-timer b {
  color: var(--color-primary);
  font-family: var(--font-hand);
  font-size: 16px;
  margin: 0 2px;
}

.nav-logout {
  padding: 6px 10px;
  border-radius: 50%;
  opacity: 0.5;
  transition: all 0.2s ease;
  font-size: 14px;
}

.nav-logout:hover {
  opacity: 1;
  background: var(--color-pink-soft);
}

/* Music toggle */
.music-toggle {
  position: fixed;
  top: 76px;
  right: 20px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  z-index: 450;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  transform: translateY(-10px);
  opacity: 0;
}

.music-toggle.show {
  transform: translateY(0);
  opacity: 1;
}

.music-toggle:hover {
  background: var(--color-pink-soft);
  transform: scale(1.08);
}

.music-icon {
  font-size: 18px;
}

/* Letter scroll container */
.letter-scroll {
  position: relative;
  z-index: 10;
}

/* Sections */
.section {
  min-height: 100vh;
  padding: 100px 24px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin-bottom: 56px;
}

.section-num {
  display: inline-block;
  font-family: var(--font-hand);
  font-size: 14px;
  color: var(--color-accent);
  letter-spacing: 3px;
  padding: 4px 14px;
  border: 1px solid var(--color-pink);
  border-radius: 100px;
  margin-bottom: 12px;
  background: var(--color-pink-soft);
}

.section-title {
  font-family: var(--font-hand);
  font-size: clamp(28px, 5vw, 42px);
  color: var(--color-primary);
  letter-spacing: 4px;
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-divider {
  font-size: 14px;
  color: var(--color-gold);
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* Scroll Reveal */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ============ Section Cover ============ */
.section-cover {
  padding-top: 0;
  padding-bottom: 0;
  min-height: 100vh;
  justify-content: center;
}

.cover-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(252, 209, 215, 0.4) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(255, 241, 224, 0.5) 0%, transparent 50%);
  z-index: -1;
}

.cover-content {
  width: 100%;
  max-width: 720px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.cover-photo {
  width: 100%;
  display: flex;
  justify-content: center;
}

.photo-frame {
  width: 100%;
  max-width: 620px;
  background: #fff;
  padding: 16px 16px 60px;
  border-radius: 4px;
  box-shadow:
    0 1px 3px rgba(0,0,0,0.1),
    0 16px 40px -10px rgba(168, 50, 67, 0.25),
    0 30px 60px -20px rgba(168, 50, 67, 0.2);
  transform: rotate(-2deg);
  position: relative;
}

.photo-frame .cover-photo-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.photo-frame::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 28px;
  background: rgba(252, 209, 215, 0.6);
  opacity: 0.85;
  z-index: 2;
  clip-path: polygon(0 100%, 5% 0, 95% 0, 100% 100%);
}

.photo-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-pink-soft) 0%, var(--color-cream) 100%);
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--color-accent);
  overflow: hidden;
}

.photo-placeholder.small {
  aspect-ratio: 1;
}

.photo-emoji {
  font-size: 64px;
}

.photo-hint {
  font-size: 13px;
  color: var(--color-text-light);
  font-family: var(--font-hand);
  opacity: 0.8;
}

/* 拍立得图片 - 按原始比例显示不裁切 */
.polaroid-photo-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.polaroid-photo {
  width: 100%;
  background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-pink-soft) 100%);
  overflow: hidden;
  border-radius: 2px;
}

.cover-text {
  text-align: center;
}

.cover-title {
  font-family: var(--font-hand);
  font-size: clamp(36px, 7vw, 56px);
  color: var(--color-primary);
  margin-bottom: 18px;
  letter-spacing: 3px;
  text-shadow: 0 2px 10px rgba(168, 50, 67, 0.12);
}

.cover-subtitle {
  font-family: var(--font-hand);
  font-size: clamp(16px, 2.5vw, 22px);
  color: var(--color-text);
  line-height: 2;
  min-height: 2.2em;
}

.typed::after {
  content: '|';
  color: var(--color-primary);
  animation: blink 0.8s step-end infinite;
  margin-left: 2px;
}

.typed.done::after {
  display: none;
}

.scroll-hint {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--color-muted);
  animation: bounceDown 2s ease-in-out infinite;
}

.scroll-text {
  font-size: 12px;
  letter-spacing: 3px;
}

.scroll-arrow {
  font-size: 20px;
}

/* ============ Timeline Section ============ */
.section-memories {
  background: linear-gradient(180deg, transparent 0%, rgba(255, 241, 224, 0.3) 50%, transparent 100%);
}

.timeline {
  width: 100%;
  max-width: 720px;
  position: relative;
  padding: 20px 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, transparent 0%, var(--color-pink) 10%, var(--color-pink) 90%, transparent 100%);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.7s ease;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 40px;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 40px;
  transform: translateX(20px);
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  top: 36px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--color-primary);
  box-shadow: 0 0 0 6px var(--color-pink-soft);
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -9px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -9px;
}

.timeline-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(252, 209, 215, 0.3);
  transition: all 0.3s ease;
}

.timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(168, 50, 67, 0.15);
}

.timeline-time {
  font-family: var(--font-hand);
  font-size: 14px;
  color: var(--color-accent);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.timeline-content {
  display: flex;
  gap: 16px;
}

.timeline-img {
  flex-shrink: 0;
  width: 200px;
  max-width: 45%;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.timeline-img img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

.timeline-img .photo-placeholder {
  border-radius: var(--radius-sm);
}

.timeline-img .photo-placeholder span {
  font-size: 36px;
}

.timeline-text {
  flex: 1;
  display: flex;
  align-items: center;
}

.typed-memory {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
}

/* ============ Reasons Section ============ */
.reasons-grid {
  width: 100%;
  max-width: 960px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.reason-card {
  aspect-ratio: 4/5;
  perspective: 1000px;
  cursor: pointer;
}

.reason-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.reason-card:hover .reason-inner,
.reason-card:focus .reason-inner,
.reason-card.flipped .reason-inner {
  transform: rotateY(180deg);
}

.reason-front, .reason-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.reason-front {
  background: linear-gradient(160deg, #fff 0%, var(--color-pink-soft) 100%);
  border: 1px solid rgba(252, 209, 215, 0.5);
}

.reason-back {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  transform: rotateY(180deg);
  color: #fff;
}

.reason-emoji {
  font-size: 48px;
  margin-bottom: 16px;
}

.reason-title {
  font-family: var(--font-hand);
  font-size: 22px;
  color: var(--color-primary);
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.reason-snippet {
  font-size: 15px;
  color: var(--color-text-light);
  font-family: var(--font-hand);
}

.reason-detail {
  font-size: 16px;
  line-height: 2;
  font-family: var(--font-hand);
  letter-spacing: 1px;
}

/* ============ Future Section ============ */
.section-future {
  background: linear-gradient(180deg, transparent 0%, rgba(252, 209, 215, 0.15) 50%, transparent 100%);
}

.wish-list {
  width: 100%;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 40px;
}

.wish-item {
  background: #fff;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border-left: 4px solid var(--color-accent);
  font-size: 15px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px) scale(0.96);
}

.wish-item.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.wish-item:hover {
  transform: translateY(-2px) translateX(6px);
  border-left-color: var(--color-primary);
  box-shadow: 0 8px 22px rgba(168, 50, 67, 0.12);
}

.wish-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  background: var(--color-pink-soft);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: bold;
  font-family: var(--font-serif);
}

.wish-more {
  margin-bottom: 48px;
}

.more-btn {
  padding: 12px 28px;
  background: var(--color-pink-soft);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 14px;
  font-family: var(--font-hand);
  letter-spacing: 1px;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.more-btn:hover {
  background: var(--color-pink);
  transform: translateY(-2px);
}

.polaroid {
  display: flex;
  justify-content: center;
}

.polaroid-inner {
  width: 100%;
  max-width: 560px;
  background: #fff;
  padding: 16px 16px 56px;
  box-shadow:
    0 2px 6px rgba(0,0,0,0.1),
    0 20px 40px -10px rgba(168, 50, 67, 0.2);
  transform: rotate(2deg);
  position: relative;
}

.polaroid-photo {
  width: 100%;
  background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-pink-soft) 100%);
  overflow: hidden;
  border-radius: 2px;
}

.polaroid-caption {
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-hand);
  color: var(--color-text-light);
  font-size: 16px;
  letter-spacing: 2px;
}

/* ============ Ending Section ============ */
.section-ending {
  min-height: 90vh;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.ending-heart-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(252, 209, 215, 0.25) 0%, transparent 40%),
    radial-gradient(circle at 70% 80%, rgba(252, 209, 215, 0.25) 0%, transparent 40%);
  z-index: -1;
}

.ending-content {
  text-align: center;
  max-width: 640px;
}

.ending-title {
  font-family: var(--font-hand);
  font-size: clamp(32px, 6vw, 52px);
  color: var(--color-primary);
  letter-spacing: 6px;
  margin-bottom: 48px;
}

.ending-letter {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(252, 209, 215, 0.5);
  padding: 48px 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  margin-bottom: 48px;
}

.ending-paragraph {
  font-family: var(--font-hand);
  font-size: clamp(18px, 3vw, 26px);
  line-height: 2.4;
  color: var(--color-text);
  letter-spacing: 1px;
}

.typed-ending::after {
  content: '|';
  color: var(--color-primary);
  animation: blink 0.8s step-end infinite;
}

.typed-ending.done::after {
  display: none;
}

.heart-button {
  position: relative;
  padding: 18px 48px;
  background: none;
  transition: transform 0.3s ease;
}

.heart-btn-inner {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 40px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  border-radius: 100px;
  font-size: 18px;
  font-weight: 600;
  box-shadow:
    0 8px 30px rgba(168, 50, 67, 0.35),
    0 0 0 0 rgba(168, 50, 67, 0.45);
  transition: all 0.3s ease;
  animation: pulseGlow 2s ease-in-out infinite;
}

.heart-button:hover .heart-btn-inner {
  transform: translateY(-3px) scale(1.03);
  box-shadow:
    0 12px 40px rgba(168, 50, 67, 0.4),
    0 0 0 10px rgba(168, 50, 67, 0);
}

.heart-button:active .heart-btn-inner {
  transform: translateY(0) scale(0.98);
}

.heart-btn-icon {
  font-size: 22px;
  animation: heartbeat 1.2s ease-in-out infinite;
}

.heart-btn-text {
  font-family: var(--font-hand);
  letter-spacing: 3px;
}

.ending-sig {
  margin-top: 40px;
  font-family: var(--font-hand);
  font-size: 18px;
  color: var(--color-text-light);
  letter-spacing: 3px;
}

/* ============ Messages Section ============ */
.section-messages {
  background: linear-gradient(180deg, transparent 0%, rgba(255, 241, 224, 0.3) 100%);
}

.message-board {
  width: 100%;
  max-width: 680px;
}

.message-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(252, 209, 215, 0.4);
  margin-bottom: 36px;
}

.message-input {
  width: 100%;
  padding: 16px;
  font-size: 15px;
  border: 2px solid var(--color-pink-soft);
  border-radius: var(--radius-md);
  background: var(--color-paper);
  resize: vertical;
  min-height: 120px;
  line-height: 1.7;
  transition: all 0.25s ease;
}

.message-input:focus {
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 4px var(--color-pink-soft);
}

.message-form-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
}

.char-count {
  font-size: 13px;
  color: var(--color-muted);
}

.send-btn {
  padding: 11px 26px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 14px rgba(168, 50, 67, 0.25);
  transition: all 0.25s ease;
}

.send-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(168, 50, 67, 0.35);
}

.send-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.submit-feedback {
  margin-top: 12px;
  min-height: 20px;
  font-size: 14px;
  font-family: var(--font-hand);
  text-align: center;
  color: var(--color-primary);
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.3s ease;
}

.submit-feedback.show {
  opacity: 1;
  transform: translateY(0);
}

.submit-feedback.error {
  color: #e74c3c;
}

.messages-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.messages-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-muted);
}

.empty-icon {
  display: block;
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.messages-empty p {
  font-family: var(--font-hand);
  font-size: 15px;
}

.message-item {
  background: #fff;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(252, 209, 215, 0.3);
  animation: messageIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  position: relative;
}

.message-item::before {
  content: '💌';
  position: absolute;
  left: -14px;
  top: 18px;
  font-size: 20px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.message-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
  padding-left: 8px;
}

.message-time {
  margin-top: 10px;
  font-size: 12px;
  color: var(--color-muted);
  text-align: right;
  padding-left: 8px;
}

/* Footer */
.letter-footer {
  padding: 60px 24px 80px;
  text-align: center;
  background: linear-gradient(180deg, transparent 0%, var(--color-pink-soft) 100%);
}

.footer-timer {
  margin-bottom: 24px;
}

.footer-line {
  font-family: var(--font-hand);
  font-size: 16px;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.footer-days {
  font-family: var(--font-hand);
  font-size: 22px;
  color: var(--color-primary);
  letter-spacing: 2px;
}

.footer-days b {
  font-size: 32px;
  margin: 0 4px;
}

.footer-sig {
  font-size: 13px;
  color: var(--color-text-light);
  letter-spacing: 3px;
  opacity: 0.7;
}

/* ============ Effects ============ */
.petals-container,
.hearts-burst {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
  overflow: hidden;
}

.petal {
  position: absolute;
  top: -30px;
  font-size: 22px;
  animation: petalFall linear forwards;
}

.burst-heart {
  position: absolute;
  font-size: 24px;
  animation: burstHeart 1.2s ease-out forwards;
}

/* ============ Responsive ============ */
@media (max-width: 768px) {
  .section {
    padding: 80px 16px 60px;
    min-height: auto;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .section-cover {
    min-height: 100vh;
    padding-top: 60px;
  }

  .login-card {
    padding: 32px 20px 24px;
  }

  .login-title {
    font-size: 26px;
  }

  .photo-frame {
    max-width: 280px;
    padding: 12px 12px 48px;
  }

  .timeline-line {
    left: 14px;
  }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    left: 0;
    padding: 16px 0 16px 44px;
    transform: translateX(10px);
  }

  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: 5px;
    right: auto;
  }

  .timeline-content {
    flex-direction: column;
  }

  .timeline-img {
    width: 100%;
    height: 160px;
  }

  .timeline-img .photo-placeholder.small {
    aspect-ratio: 16/9;
  }

  .reasons-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
  }

  .reason-card {
    aspect-ratio: 3/4;
  }

  .reason-front, .reason-back {
    padding: 16px 12px;
  }

  .reason-emoji {
    font-size: 36px;
  }

  .reason-title {
    font-size: 18px;
  }

  .reason-snippet, .reason-detail {
    font-size: 13px;
  }

  .wish-item {
    padding: 14px 16px;
    font-size: 14px;
    gap: 10px;
  }

  .wish-num {
    width: 28px;
    height: 28px;
    font-size: 11px;
  }

  .ending-letter {
    padding: 32px 20px;
  }

  .message-form {
    padding: 18px;
  }

  .top-nav {
    padding: 0 14px;
    height: 48px;
  }

  .nav-logo {
    font-size: 15px;
  }

  .nav-timer {
    font-size: 12px;
  }

  .nav-timer b {
    font-size: 14px;
  }

  .music-toggle {
    top: 62px;
    right: 14px;
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 480px) {
  .reasons-grid {
    grid-template-columns: 1fr 1fr;
  }

  .polaroid-inner {
    max-width: 260px;
  }

  .heart-btn-inner {
    padding: 14px 30px;
    font-size: 16px;
  }

  .footer-days {
    font-size: 18px;
  }

  .footer-days b {
    font-size: 26px;
  }
}