/* ============================================
   鹿吉大社 - AI有声绘本应用样式
   ============================================ */

:root {
  /* 主题色 */
  --primary: #8B4513;          /* 驼鹿棕 */
  --primary-light: #A0522D;    /* 浅棕 */
  --primary-dark: #6B3E26;     /* 深棕 */
  --secondary: #4ECDC4;        /* 薄荷绿 */
  --accent: #FFE66D;           /* 柠檬黄 */
  --background: #FFF9F5;       /* 暖白 */
  --text: #2D3436;             /* 深灰 */
  --text-light: #666;          /* 浅灰 */
  --white: #FFFFFF;
  --error: #E74C3C;
  --success: #27AE60;

  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 24px;

  /* 字体 */
  --font-main: '阿里妈妈刀隶体', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-sm: 0.85rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;

  /* 动画 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   全局样式
   ============================================ */

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-main);
  background: linear-gradient(135deg, #E8D5C4 0%, #FFF9F5 50%, #E8F5E9 100%);
  color: var(--text);
  line-height: 1.6;
}

#app {
  width: 100%;
  height: 100%;
  max-width: 100vw;
  max-height: 100vh;
  position: relative;
  overflow: hidden;
}

/* ============================================
   视图切换
   ============================================ */

.view {
  display: none;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  overflow-y: auto;
}

.view.active {
  display: flex;
  flex-direction: column;
  animation: fadeIn var(--transition-normal);
}

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

.hidden {
  display: none !important;
}

/* ============================================
   首页视图 (home-view)
   ============================================ */

#home-view {
  background: var(--background);
}

/* 顶部栏 */
.header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(139, 69, 19, 0.2);
  z-index: 10;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: contain;
  background: var(--white);
  padding: 4px;
}

.brand-name {
  color: var(--white);
  font-size: var(--font-size-lg);
  font-weight: bold;
  letter-spacing: 2px;
}

.library-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.library-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.library-btn .icon {
  font-size: 1.2rem;
}

.library-btn .label {
  font-size: var(--font-size-sm);
}

/* 主内容区 */
.home-main {
  flex: 1;
  display: flex;
  flex-direction: row;
  padding: var(--spacing-md);
  gap: var(--spacing-lg);
  overflow: hidden;
}

/* 左侧场景区 */
.scene-area {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
}

.scene-bg {
  width: 100%;
  height: 100%;
  max-width: 400px;
  max-height: 300px;
  position: relative;
  background: linear-gradient(180deg, #87CEEB 0%, #B0E0E6 60%, #90EE90 60%, #228B22 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 天空 */
.sky {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 60%;
  background: linear-gradient(180deg, #87CEEB 0%, #B0E0E6 100%);
}

/* 草地 */
.grass {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(180deg, #90EE90 0%, #228B22 100%);
}

/* 太阳 */
.sun {
  position: absolute;
  top: 10%;
  right: 15%;
  width: 60px;
  height: 60px;
  background: radial-gradient(circle, #FFD700 0%, #FFA500 100%);
  border-radius: 50%;
  box-shadow: 0 0 30px #FFD700;
  animation: sunPulse 3s ease-in-out infinite;
}

@keyframes sunPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 30px #FFD700; }
  50% { transform: scale(1.1); box-shadow: 0 0 40px #FFD700; }
}

/* 云朵 */
.cloud {
  position: absolute;
  background: var(--white);
  border-radius: 50%;
  opacity: 0.9;
  animation: cloudFloat 8s ease-in-out infinite;
}

.cloud::before, .cloud::after {
  content: '';
  position: absolute;
  background: var(--white);
  border-radius: 50%;
}

.cloud-1 {
  top: 15%;
  left: 10%;
  width: 50px;
  height: 30px;
}

.cloud-1::before {
  width: 35px;
  height: 25px;
  top: -10px;
  left: 10px;
}

.cloud-1::after {
  width: 25px;
  height: 20px;
  top: -5px;
  right: 5px;
}

.cloud-2 {
  top: 25%;
  left: 40%;
  width: 70px;
  height: 35px;
  animation-delay: -4s;
}

.cloud-2::before {
  width: 45px;
  height: 30px;
  top: -15px;
  left: 15px;
}

.cloud-2::after {
  width: 35px;
  height: 25px;
  top: -8px;
  right: 8px;
}

@keyframes cloudFloat {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(15px); }
}

/* 树木 */
.tree {
  position: absolute;
  bottom: 40%;
}

.tree::before {
  content: '';
  position: absolute;
  background: #228B22;
  border-radius: 50%;
}

.tree::after {
  content: '';
  position: absolute;
  background: #8B4513;
  width: 12px;
  height: 30px;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.tree-1 {
  left: 5%;
  width: 80px;
  height: 100px;
}

.tree-1::before {
  width: 80px;
  height: 80px;
  bottom: 30px;
  left: 0;
  background: radial-gradient(circle, #228B22 0%, #006400 100%);
}

.tree-2 {
  right: 5%;
  width: 60px;
  height: 80px;
}

.tree-2::before {
  width: 60px;
  height: 60px;
  bottom: 20px;
  left: 0;
  background: radial-gradient(circle, #2E8B57 0%, #006400 100%);
}

/* 小驯鹿 */
.deer {
  position: absolute;
  bottom: 45%;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 60px;
}

.deer-body {
  position: absolute;
  width: 50px;
  height: 35px;
  background: #D2691E;
  border-radius: 50%;
  bottom: 20px;
  left: 15px;
}

.deer-head {
  position: absolute;
  width: 25px;
  height: 25px;
  background: #D2691E;
  border-radius: 50%;
  top: 5px;
  left: 55px;
}

.deer-head::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: #2D3436;
  border-radius: 50%;
  top: 8px;
  right: 2px;
}

.deer-ear {
  position: absolute;
  width: 12px;
  height: 18px;
  background: #D2691E;
  border-radius: 50% 50% 0 0;
  top: -5px;
}

.deer-ear-left {
  left: 52px;
  transform: rotate(-20deg);
}

.deer-ear-right {
  left: 62px;
  transform: rotate(20deg);
}

.deer-leg {
  position: absolute;
  width: 8px;
  height: 25px;
  background: #8B4513;
  bottom: 0;
  border-radius: 4px;
}

.deer-leg-1 { left: 20px; }
.deer-leg-2 { left: 35px; }
.deer-leg-3 { left: 48px; }
.deer-leg-4 { left: 58px; }

/* 花朵 */
.flower {
  position: absolute;
  bottom: 42%;
  width: 20px;
  height: 20px;
}

.flower::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background: radial-gradient(circle, #FF69B4 0%, #FF1493 100%);
  border-radius: 50%;
  top: 0;
}

.flower::after {
  content: '';
  position: absolute;
  width: 4px;
  height: 15px;
  background: #228B22;
  bottom: -15px;
  left: 8px;
}

.flower-1 { left: 15%; }
.flower-2 { left: 75%; }
.flower-3 { left: 85%; }

.flower-2::before {
  background: radial-gradient(circle, #FFD700 0%, #FFA500 100%);
}

.flower-3::before {
  background: radial-gradient(circle, #87CEEB 0%, #4169E1 100%);
}

/* 右侧控制区 */
.control-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: var(--spacing-md);
  max-width: 400px;
}

/* 年龄选择 */
.age-selector {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.selector-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.age-options {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.age-btn {
  background: var(--background);
  border: 2px solid transparent;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.age-btn:hover {
  border-color: var(--primary-light);
}

.age-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* 阅读模式选择 */
.mode-selector {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.mode-options {
  display: flex;
  gap: var(--spacing-md);
}

.mode-btn {
  flex: 1;
  background: var(--background);
  border: 2px solid transparent;
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-btn:hover {
  border-color: var(--primary-light);
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  border-color: var(--primary);
}

.mode-icon {
  font-size: 1.5rem;
}

.mode-text {
  font-size: var(--font-size-sm);
  font-weight: bold;
}

.mode-desc {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* 故事输入 */
.story-input-area {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.input-label {
  display: block;
  font-size: var(--font-size-md);
  color: var(--text);
  margin-bottom: var(--spacing-sm);
}

.input-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

#story-prompt {
  width: 100%;
  min-height: 80px;
  padding: var(--spacing-md);
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  font-family: inherit;
  resize: vertical;
  transition: border-color var(--transition-fast);
}

#story-prompt:focus {
  outline: none;
  border-color: var(--primary);
}

#story-prompt::placeholder {
  color: #AAA;
}

.input-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.voice-btn {
  background: var(--background);
  border: 2px solid #E0E0E0;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.voice-btn:hover {
  border-color: var(--primary-light);
  background: var(--primary-light);
  color: var(--white);
}

.voice-btn.recording {
  background: var(--error);
  color: var(--white);
  border-color: var(--error);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.mic-icon {
  font-size: 1.2rem;
}

.generate-btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-md);
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: transform var(--transition-fast);
}

.generate-btn:hover {
  transform: scale(1.05);
}

.generate-btn:active {
  transform: scale(0.98);
}

.generate-btn.loading {
  opacity: 0.7;
  pointer-events: none;
}

.btn-icon {
  font-size: 1.2rem;
}

/* 风格选择 */
.style-selector {
  background: var(--white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.selector-label.small {
  font-size: 0.8rem;
}

.style-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: inherit;
  background: var(--white);
  cursor: pointer;
}

.style-select:focus {
  outline: none;
  border-color: var(--primary);
}

/* 最近故事栏 */
.recent-bar {
  background: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  border-top: 1px solid #E0E0E0;
}

.recent-label {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.recent-list {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  flex: 1;
}

.recent-item {
  background: var(--background);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
}

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

/* ============================================
   生成中视图 (generating-view)
   ============================================ */

#generating-view {
  background: linear-gradient(135deg, #E8D5C4 0%, #FFF9F5 100%);
  justify-content: center;
  align-items: center;
}

.generating-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-xl);
}

/* 奔跑的小驯鹿动画 */
.generating-animation {
  width: 150px;
  height: 100px;
  margin-bottom: var(--spacing-lg);
}

.deer-running {
  position: relative;
  width: 100%;
  height: 100%;
  animation: runBounce 0.6s ease-in-out infinite;
}

.running-body {
  position: absolute;
  width: 80px;
  height: 50px;
  background: #D2691E;
  border-radius: 50%;
  bottom: 30px;
  left: 35px;
}

.running-head {
  position: absolute;
  width: 35px;
  height: 35px;
  background: #D2691E;
  border-radius: 50%;
  top: 10px;
  right: 15px;
}

.running-head::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  background: #2D3436;
  border-radius: 50%;
  top: 12px;
  right: 3px;
}

.running-legs .leg {
  position: absolute;
  width: 12px;
  height: 35px;
  background: #8B4513;
  border-radius: 6px;
  bottom: 0;
}

.leg-front-left {
  left: 50px;
  animation: legFront 0.3s ease-in-out infinite;
}

.leg-front-right {
  left: 70px;
  animation: legFront 0.3s ease-in-out infinite 0.15s;
}

.leg-back-left {
  left: 90px;
  animation: legBack 0.3s ease-in-out infinite;
}

.leg-back-right {
  left: 110px;
  animation: legBack 0.3s ease-in-out infinite 0.15s;
}

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

@keyframes legFront {
  0%, 100% { transform: rotate(-30deg); }
  50% { transform: rotate(30deg); }
}

@keyframes legBack {
  0%, 100% { transform: rotate(30deg); }
  50% { transform: rotate(-30deg); }
}

/* 生成文字 */
.generating-text {
  text-align: center;
}

#generating-title {
  font-size: var(--font-size-xl);
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
}

.progress-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.progress-bar {
  width: 200px;
  height: 12px;
  background: #E0E0E0;
  border-radius: 6px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  width: 0%;
  transition: width var(--transition-normal);
  border-radius: 6px;
}

.progress-text {
  font-size: var(--font-size-md);
  color: var(--primary);
  font-weight: bold;
}

.progress-step {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.cancel-btn {
  margin-top: var(--spacing-lg);
  background: transparent;
  border: 2px solid var(--text-light);
  color: var(--text-light);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cancel-btn:hover {
  border-color: var(--error);
  color: var(--error);
}

/* ============================================
   阅读页视图 (reader-view)
   ============================================ */

#reader-view {
  background: var(--background);
}

/* 阅读页顶部栏 */
.reader-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--white);
  box-shadow: 0 2px 8px rgba(139, 69, 19, 0.2);
}

.back-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.back-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

#reader-title {
  font-size: var(--font-size-md);
  text-align: center;
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.reader-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.fav-btn, .timer-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: var(--white);
  padding: var(--spacing-sm);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.fav-btn:hover, .timer-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.fav-btn.active {
  color: #FFD700;
}

/* 绘本内容区 */
.reader-content {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* 封面页 */
.page-cover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #FFF9F5 0%, #FFE4C4 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xl);
  z-index: 5;
}

.page-cover.hidden {
  display: none;
}

.cover-image {
  width: 80%;
  max-width: 300px;
  height: 60%;
  max-height: 400px;
  background: #E0E0E0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  display: flex;
  justify-content: center;
  align-items: center;
}

.cover-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-title {
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-xl);
  color: var(--primary);
  text-align: center;
}

.start-read-btn {
  margin-top: var(--spacing-xl);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-md);
  font-weight: bold;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.start-read-btn:hover {
  transform: scale(1.05);
}

/* 内容页容器 */
.pages-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.page-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  flex-direction: column;
  background: var(--white);
}

.page-content.active {
  display: flex;
}

.page-image {
  flex: 3;
  background: #E0E0E0;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.page-text {
  flex: 2;
  padding: var(--spacing-lg);
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(180deg, #FFF9F5 0%, #FFE4C4 100%);
}

.page-text p {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  text-align: center;
  color: var(--text);
  max-width: 90%;
}

/* 封底页 */
.page-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #FFE4C4 0%, #FFF9F5 100%);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xl);
  z-index: 5;
}

.page-back.active {
  display: flex;
}

.back-image {
  width: 60%;
  max-width: 200px;
  height: 40%;
  max-height: 300px;
  background: #E0E0E0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.back-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.read-again-btn {
  margin-top: var(--spacing-xl);
  background: linear-gradient(135deg, var(--secondary) 0%, #3BA99C 100%);
  color: var(--white);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-md);
  font-weight: bold;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.read-again-btn:hover {
  transform: scale(1.05);
}

/* 阅读页底部栏 */
.reader-footer {
  background: var(--white);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #E0E0E0;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.page-indicator {
  display: flex;
  align-items: center;
  font-size: var(--font-size-md);
  color: var(--text);
}

.current-page {
  font-weight: bold;
  color: var(--primary);
}

.page-divider {
  margin: 0 var(--spacing-xs);
}

.page-controls {
  display: flex;
  gap: var(--spacing-md);
}

.page-btn {
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.page-btn:hover {
  background: var(--primary-light);
}

.page-btn.disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* 播放控制 */
.play-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.play-btn {
  background: var(--secondary);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.play-btn:hover {
  transform: scale(1.1);
}

.audio-progress {
  width: 100px;
}

.audio-bar {
  height: 6px;
  background: #E0E0E0;
  border-radius: 3px;
  overflow: hidden;
}

.audio-fill {
  height: 100%;
  background: var(--secondary);
  width: 0%;
  transition: width var(--transition-fast);
}

/* 定时弹窗 */
.timer-modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  z-index: 100;
}

.timer-content {
  text-align: center;
}

.timer-content h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--primary);
}

.timer-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.timer-option {
  background: var(--background);
  border: 2px solid #E0E0E0;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.timer-option:hover {
  border-color: var(--primary);
}

.timer-option.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.timer-close {
  margin-top: var(--spacing-lg);
  background: var(--text-light);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  cursor: pointer;
}

/* ============================================
   故事库视图 (library-view)
   ============================================ */

#library-view {
  background: var(--background);
}

.library-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--white);
}

.library-header h1 {
  font-size: var(--font-size-lg);
}

.library-tabs {
  display: flex;
  padding: var(--spacing-md);
  gap: var(--spacing-sm);
  background: var(--white);
  border-bottom: 1px solid #E0E0E0;
}

.tab-btn {
  flex: 1;
  background: var(--background);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn.active {
  background: var(--primary);
  color: var(--white);
}

.library-content {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-md);
}

.library-story-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.library-story-card:hover {
  transform: translateY(-2px);
}

.library-cover {
  width: 100%;
  height: 120px;
  background: #E0E0E0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.library-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.library-info {
  padding: var(--spacing-sm);
}

.library-info h3 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.library-info .age-tag {
  font-size: 0.7rem;
  padding: 2px 6px;
  background: var(--secondary);
  color: var(--white);
  border-radius: var(--radius-sm);
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
}

.empty-state p {
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

.create-btn {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-md);
  font-weight: bold;
  cursor: pointer;
}

/* ============================================
   全局组件
   ============================================ */

/* 加载遮罩 */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 200;
}

.loading-content {
  text-align: center;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid #E0E0E0;
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#loading-text {
  color: var(--text);
}

/* 错误提示 */
.error-toast {
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  background: var(--error);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
  z-index: 300;
  animation: slideUp var(--transition-normal);
}

@keyframes slideUp {
  from { transform: translateX(-50%) translateY(20px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* 成功提示 */
.success-toast {
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  background: var(--success);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
  z-index: 300;
  animation: slideUp var(--transition-normal);
}

/* ============================================
   响应式适配
   ============================================ */

@media (max-width: 768px) {
  .home-main {
    flex-direction: column;
  }

  .scene-area {
    min-height: 150px;
    max-height: 200px;
  }

  .control-area {
    max-width: none;
  }

  .mode-options {
    flex-wrap: wrap;
  }

  .mode-btn {
    min-width: calc(50% - var(--spacing-md));
  }

  .page-text p {
    font-size: var(--font-size-md);
  }

  .reader-footer {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
  }
}

@media (min-width: 768px) {
  .home-main {
    flex-direction: row;
  }

  .scene-area {
    flex: 1.2;
    min-height: 300px;
  }

  .control-area {
    flex: 1;
  }

  .mode-btn {
    min-width: none;
  }

  .reader-content {
    display: flex;
    flex-direction: row;
  }

  .page-image {
    flex: 1;
    height: 100%;
  }

  .page-text {
    flex: 1;
    height: 100%;
  }
}

@media (min-width: 1024px) {
  .control-area {
    max-width: 350px;
  }

  .pages-container {
    max-width: 800px;
    margin: 0 auto;
  }
}