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

:root {
  --pink-50: #FFF0F3;
  --pink-100: #FFD6E0;
  --pink-200: #FFB3C6;
  --pink-300: #FF8FA3;
  --pink-400: #FF6B8A;
  --pink-500: #FF4D6D;
  --pink-600: #C9184A;
  --rose-700: #800F2F;
  --rose-800: #590D22;
  --text-primary: #3D1A22;
  --text-secondary: #7A4B5C;
  --text-light: #A8818F;
  --card-bg: rgba(255, 255, 255, 0.92);
  --card-shadow: 0 4px 20px rgba(255, 143, 163, 0.15);
  --card-shadow-hover: 0 8px 32px rgba(255, 77, 109, 0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  min-height: 100vh;
  background: linear-gradient(160deg, #FFF0F3 0%, #FFD6E0 40%, #FFB3C6 100%);
  font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  color: var(--text-primary);
  padding-top: 70px;
  overflow-x: hidden;
}

/* ===== 浮动爱心 ===== */
.floating-hearts {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; overflow: hidden;
  z-index: 0;
}
.floating-hearts span {
  position: absolute;
  bottom: -30px;
  animation: heartRise linear infinite;
  opacity: 0.5;
}
@keyframes heartRise {
  0% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
  100% { transform: translateY(-110vh) rotate(720deg); opacity: 0; }
}

/* ===== 导航栏 ===== */
.nav-bar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255, 179, 198, 0.3);
  box-shadow: 0 2px 20px rgba(255, 143, 163, 0.08);
}
.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--pink-500);
  text-decoration: none;
  transition: var(--transition);
}
.nav-logo:hover { transform: scale(1.05); }
.nav-links {
  display: flex;
  gap: 4px;
}
.nav-link {
  padding: 8px 18px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}
.nav-link:hover {
  background: var(--pink-100);
  color: var(--pink-500);
  transform: translateY(-1px);
}
.nav-link.active {
  background: linear-gradient(135deg, var(--pink-300), var(--pink-400));
  color: white;
  box-shadow: 0 4px 12px rgba(255, 77, 109, 0.25);
}

/* ===== 主内容 ===== */
.main-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

/* ===== 首页英雄区 ===== */
.hero-section {
  text-align: center;
  padding: 30px 0 20px;
}
.hero-heart {
  font-size: 60px;
  margin-bottom: 10px;
  animation: heartbeat 1.8s ease-in-out infinite;
  display: inline-block;
}
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14% { transform: scale(1.25); }
  28% { transform: scale(1); }
  42% { transform: scale(1.2); }
  56% { transform: scale(1); }
}
.hero-title {
  font-size: 44px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--pink-500), var(--pink-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
  letter-spacing: 2px;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-light);
  letter-spacing: 6px;
  font-weight: 400;
}

/* ===== 计时器 ===== */
.timer-section {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--card-shadow);
  margin: 30px auto;
  max-width: 640px;
  border: 1px solid rgba(255, 179, 198, 0.2);
}
.timer-label {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  letter-spacing: 2px;
}
.timer-display {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.timer-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 80px;
}
.timer-num {
  font-size: 52px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--pink-400), var(--pink-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  letter-spacing: 2px;
}
.timer-text {
  font-size: 14px;
  color: var(--text-light);
  margin-top: 4px;
  letter-spacing: 2px;
}
.timer-sep {
  font-size: 40px;
  font-weight: 200;
  color: var(--pink-300);
  padding-bottom: 18px;
}
.timer-start {
  font-size: 14px;
  color: var(--text-light);
  letter-spacing: 1px;
}

/* ===== 快捷入口 ===== */
.quick-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}
.quick-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  text-decoration: none;
  box-shadow: var(--card-shadow);
  border: 1px solid rgba(255, 179, 198, 0.15);
  transition: var(--transition);
  cursor: pointer;
}
.quick-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--pink-200);
}
.quick-icon {
  font-size: 40px;
  margin-bottom: 14px;
}
.quick-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.quick-desc {
  font-size: 14px;
  color: var(--text-light);
}

/* ===== 页面标题 ===== */
.page-header {
  text-align: center;
  padding: 10px 0 30px;
}
.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--rose-800);
  margin-bottom: 6px;
}
.page-desc {
  color: var(--text-light);
  font-size: 15px;
}

/* ===== 按钮 ===== */
.btn {
  padding: 10px 28px;
  border: none;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  letter-spacing: 0.5px;
}
.btn-pink {
  background: linear-gradient(135deg, var(--pink-300), var(--pink-400));
  color: white;
  box-shadow: 0 4px 14px rgba(255, 77, 109, 0.25);
}
.btn-pink:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 77, 109, 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--pink-500);
  border: 2px solid var(--pink-200);
}
.btn-outline:hover {
  background: var(--pink-100);
  border-color: var(--pink-300);
}
.btn-danger {
  background: #FFF0F0;
  color: #E53E3E;
  border: 1px solid #FFC0C0;
}
.btn-danger:hover {
  background: #FFE0E0;
}

/* ===== 上传区域 ===== */
.upload-area {
  background: var(--card-bg);
  border: 2px dashed var(--pink-200);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 30px;
}
.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--pink-400);
  background: rgba(255, 179, 198, 0.15);
  transform: translateY(-2px);
}
.upload-icon { font-size: 48px; margin-bottom: 12px; }
.upload-text { font-size: 18px; color: var(--text-secondary); margin-bottom: 6px; }
.upload-hint { font-size: 13px; color: var(--text-light); margin-bottom: 16px; }
.upload-note-area {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 16px;
  flex-wrap: wrap;
}

/* ===== 输入框 ===== */
.input-note {
  padding: 10px 16px;
  border: 2px solid var(--pink-100);
  border-radius: var(--radius-sm);
  font-size: 14px;
  width: 260px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}
.input-note:focus {
  border-color: var(--pink-300);
  box-shadow: 0 0 0 3px rgba(255, 143, 163, 0.15);
}

/* ===== 时间轴 ===== */
.timeline {
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--pink-200), var(--pink-300), var(--pink-400));
  border-radius: 3px;
}

/* ===== 照片卡片 ===== */
.photo-card {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  margin-bottom: 24px;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid rgba(255, 179, 198, 0.1);
}
.photo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}
.timeline-dot {
  position: absolute;
  left: -33px;
  top: 24px;
  width: 16px;
  height: 16px;
  background: linear-gradient(135deg, var(--pink-300), var(--pink-500));
  border-radius: 50%;
  border: 3px solid var(--pink-50);
  box-shadow: 0 2px 8px rgba(255, 77, 109, 0.2);
  z-index: 1;
}
.photo-img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  display: block;
}
.photo-info {
  padding: 16px 20px;
}
.photo-note {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 6px;
}
.photo-time {
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 0.5px;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.empty-icon { font-size: 56px; margin-bottom: 16px; }
.empty-text { font-size: 18px; color: var(--text-light); }

/* ===== 加载 ===== */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-light);
  font-size: 16px;
}

/* ===== 加载更多 ===== */
.load-more {
  text-align: center;
  padding: 20px;
}

/* ===== 弹窗 ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-content {
  background: white;
  border-radius: var(--radius);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--pink-100);
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pink-500);
  transition: var(--transition);
}
.modal-close:hover {
  background: var(--pink-200);
  transform: rotate(90deg);
}
.preview-img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}
.preview-note {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.6;
}
.preview-time {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
}

/* ===== 日记工具条 ===== */
.diary-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.diary-filter select {
  padding: 8px 16px;
  border: 2px solid var(--pink-100);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--text-secondary);
  background: white;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
}
.diary-filter select:focus {
  border-color: var(--pink-300);
}

/* ===== 日记卡片 ===== */
.diary-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--card-shadow);
  margin-bottom: 20px;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid rgba(255, 179, 198, 0.1);
  position: relative;
}
.diary-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}
.diary-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--rose-800);
  margin-bottom: 8px;
}
.diary-card-preview {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.diary-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-light);
}
.diary-card-label {
  background: var(--pink-100);
  color: var(--pink-600);
  padding: 2px 12px;
  border-radius: 12px;
  font-size: 12px;
}

/* ===== 日记编辑器弹窗 ===== */
.modal-diary { max-width: 640px; }
.modal-diary-view { max-width: 640px; }
.modal-title {
  font-size: 22px;
  color: var(--rose-800);
  margin-bottom: 20px;
  font-weight: 700;
}
.input-diary-title {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--pink-100);
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  outline: none;
  margin-bottom: 12px;
  transition: var(--transition);
}
.input-diary-title:focus {
  border-color: var(--pink-300);
  box-shadow: 0 0 0 3px rgba(255, 143, 163, 0.15);
}
.input-diary-date {
  padding: 8px 14px;
  border: 2px solid var(--pink-100);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--text-secondary);
  outline: none;
  margin-bottom: 12px;
  transition: var(--transition);
}
.input-diary-date:focus {
  border-color: var(--pink-300);
}

/* 编辑器工具栏 */
.editor-toolbar {
  display: flex;
  gap: 4px;
  padding: 8px 4px;
  border: 2px solid var(--pink-100);
  border-bottom: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--pink-50);
}
.editor-btn {
  width: 34px;
  height: 34px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}
.editor-btn:hover {
  background: var(--pink-200);
  color: var(--pink-500);
}

.textarea-diary {
  width: 100%;
  min-height: 260px;
  padding: 16px;
  border: 2px solid var(--pink-100);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: 15px;
  line-height: 1.8;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: var(--transition);
}
.textarea-diary:focus {
  border-color: var(--pink-300);
  box-shadow: 0 0 0 3px rgba(255, 143, 163, 0.1);
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ===== 日记查看 ===== */
.view-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
}
.view-content {
  font-size: 16px;
  line-height: 2;
  color: var(--text-primary);
  white-space: pre-wrap;
}
.view-content b { font-weight: 700; }
.view-content i { font-style: italic; }
.view-content u { text-decoration: underline; }

/* ===== Toast 提示 ===== */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--rose-800);
  color: white;
  padding: 12px 28px;
  border-radius: 24px;
  font-size: 15px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  z-index: 300;
  animation: toastIn 0.3s ease;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
  body { padding-top: 60px; }
  .nav-inner { padding: 0 16px; }
  .nav-logo { font-size: 16px; }
  .nav-link { padding: 6px 12px; font-size: 13px; }
  .hero-title { font-size: 32px; }
  .timer-num { font-size: 36px; }
  .timer-unit { min-width: 55px; }
  .timer-sep { font-size: 28px; }
  .quick-links { grid-template-columns: 1fr; }
  .timeline { padding-left: 32px; }
  .timeline-dot { left: -25px; width: 12px; height: 12px; top: 20px; }
  .photo-card { margin-bottom: 16px; }
  .diary-toolbar { flex-direction: column; align-items: stretch; }
  .modal-content { padding: 24px 20px; }
  .input-note { width: 100%; }
}