/* =============================================
   CookieTune 核心基础样式与全局布局 (main.css)
   ============================================= */

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Noto Serif SC', 'Cinzel', STSong, 'Songti SC', serif;
  
  /* 基础玻璃态与阴影 */
  --glass-bg: rgba(22, 16, 28, 0.55);
  --glass-border: rgba(255, 255, 255, 0.22);
  --glass-shadow: 0 16px 40px 0 rgba(0, 0, 0, 0.35);
  --glass-blur: blur(16px);
  
  --text-main: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.85);
  --text-dim: rgba(255, 255, 255, 0.55);
  
  /* 默认主题色 */
  --primary-color: #ff758c;
  --primary-gradient: linear-gradient(135deg, #ff758c 0%, #ff7eb3 100%);
  --accent-color: #ffd1ff;
  --btn-bg: rgba(255, 117, 140, 0.25);
  --btn-border: rgba(255, 117, 140, 0.5);
  --bg-overlay: rgba(14, 10, 20, 0.35);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-spring: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

html, body {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  font-family: var(--font-sans);
  color: var(--text-main);
  background: #0d0914;
  user-select: none;
}

/* 背景层与动态全屏壁纸 (修正 z-index 层叠关系，确保永远位于视窗底层且不被遮挡) */
.bg-container {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-image-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  filter: blur(0px) brightness(0.95);
  transition: background-image 0.4s ease-in-out, filter 0.3s ease;
  z-index: 1;
}

.bg-gradient-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255, 117, 140, 0.12), transparent 45%),
              radial-gradient(circle at 80% 80%, rgba(138, 43, 226, 0.12), transparent 50%),
              var(--bg-overlay);
  backdrop-filter: blur(2px);
  transition: background 0.4s ease;
  z-index: 2;
}

/* 玻璃拟态卡片通用样式 */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

/* 页面主布局 */
.app-layout {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1560px;
  margin: 0 auto;
  padding: 16px 24px 32px 24px;
  gap: 18px;
}

/* 顶部导航栏 */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-full);
  transition: var(--transition-smooth);
}

.header-brand:hover {
  background: rgba(255, 255, 255, 0.1);
}

.logo-icon-wrapper {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(255, 117, 140, 0.5);
  overflow: hidden;
}

.logo-custom-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.logo-upload-hover {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.2s ease;
  border-radius: 50%;
}

.logo-icon-wrapper:hover .logo-upload-hover {
  opacity: 1;
}

.logo-emoji {
  font-size: 22px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  animation: gentle-tilt 3s ease-in-out infinite alternate;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(120deg, #ffffff, var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* 搜索框 */
.header-search {
  flex: 1;
  max-width: 380px;
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  transition: var(--transition-smooth);
}

.header-search:focus-within {
  background: rgba(255, 255, 255, 0.25);
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(255, 117, 140, 0.5);
}

.search-icon {
  font-size: 14px;
  opacity: 0.9;
  margin-right: 8px;
}

.header-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13px;
}

.header-search input::placeholder {
  color: rgba(255, 255, 255, 0.65);
}

.search-clear-btn {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-size: 12px;
}

/* 顶部操作按键区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mode-switch-pill {
  display: flex;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  padding: 4px;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.mode-btn.active {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(255, 117, 140, 0.5);
}

.icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-full);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-spring);
}

.icon-btn:hover {
  background: var(--primary-gradient);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 117, 140, 0.4);
}

.badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: #ff4757;
  color: #fff;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 800;
}

/* 分类标签导航栏 */
.category-nav {
  display: flex;
  align-items: center;
}

.category-scroll {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 2px 8px 2px;
  scrollbar-width: none;
}

.category-scroll::-webkit-scrollbar {
  display: none;
}

.cat-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 22px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-smooth);
}

.cat-pill:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  transform: translateY(-2px);
}

.cat-pill.active {
  background: var(--primary-gradient);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 6px 20px rgba(255, 117, 140, 0.5);
}

/* 主工作区分割布局 */
.main-content {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  flex: 1;
  min-height: 600px;
}

/* 右侧曲库面板 */
.library-panel {
  display: flex;
  flex-direction: column;
  padding: 24px;
  max-height: calc(100vh - 170px);
  overflow: hidden;
}

.library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.lib-title-group {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.lib-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
}

.lib-count {
  font-size: 12px;
  color: var(--text-dim);
}

.lib-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-full);
  padding: 3px;
}

.lib-tab-btn {
  padding: 5px 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.lib-tab-btn.active {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 2px 10px rgba(255, 117, 140, 0.4);
}

/* 曲目列表展示 */
.track-list-wrapper {
  flex: 1;
  overflow-y: auto;
  padding-top: 14px;
  padding-right: 4px;
}

.track-list-wrapper::-webkit-scrollbar {
  width: 6px;
}

.track-list-wrapper::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 4px;
}

.track-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.track-item-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.track-item-card:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(4px);
  border-color: var(--primary-color);
}

.track-item-card.active {
  background: linear-gradient(90deg, rgba(255, 117, 140, 0.35) 0%, rgba(255, 255, 255, 0.12) 100%);
  border-color: var(--primary-color);
  box-shadow: 0 4px 18px rgba(255, 117, 140, 0.35);
}

.track-cover-thumb {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: #2a2035;
}

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

.track-playing-eq {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}

.eq-bar {
  width: 3px;
  height: 14px;
  background: var(--primary-color);
  border-radius: 2px;
  animation: eq-bounce 0.8s ease-in-out infinite alternate;
}

.eq-bar:nth-child(2) { animation-delay: 0.2s; height: 18px; }
.eq-bar:nth-child(3) { animation-delay: 0.4s; height: 10px; }

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

.track-title-line {
  display: flex;
  align-items: center;
  gap: 6px;
}

.track-name {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.badge-mini {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 700;
  white-space: nowrap;
}

.badge-cookie {
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  color: #3e2700;
}

.badge-cat {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.track-artist-line {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 3px;
}

.track-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.track-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.track-btn:hover {
  color: #fff;
  transform: scale(1.2);
}

.track-btn.liked {
  color: #ff4757;
}

.clarity-btn {
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  color: #fff;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.clarity-btn.active {
  background: var(--primary-gradient);
  border-color: #fff;
}

/* 动画关键帧 */
@keyframes gentle-tilt {
  0% { transform: rotate(-5deg); }
  100% { transform: rotate(5deg); }
}

@keyframes eq-bounce {
  0% { height: 4px; }
  100% { height: 20px; }
}

/* 移动端自适应 */
@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr;
  }
  
  .library-panel {
    max-height: none;
  }
  
  .app-header {
    flex-wrap: wrap;
    border-radius: var(--radius-lg);
  }
  
  .header-search {
    order: 3;
    max-width: 100%;
    width: 100%;
  }
}