/* -------------------------------------------------------------------------- */
/*                                字体系统 (本地加速)                          */
/* -------------------------------------------------------------------------- */

:root {
  /* 优先本地系统字体，中文优先楷体 */
  --font-sans:
    -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
    'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* 传统色名称优先使用楷体风格本地字体 (适配多系统) */
  --font-serif:
    'Kaiti SC', '楷体-简', '楷书-简', 'STKaiti', '华文楷体', 'KaiTi', '楷体', 'KaiTi_GB2312',
    cursive, serif;

  /* 色值与代码使用系统等宽字体 */
  --font-mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New',
    monospace;

  --zen-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --paper-bg: #fdfdfd;
  --card-sep: #f0f0f0;
  --glass-bg: rgba(255, 255, 255, 0.9);
  --text-main: #333;
  --text-muted: #666;

  /* 动态主题变量支持 */
  --theme-color: #206bc4; /* 默认蓝色 */
}

[data-bs-theme='dark'] {
  --paper-bg: #111111;
  --card-sep: #2a2a2a;
  --glass-bg: rgba(20, 20, 20, 0.85);
  --text-main: #f4f4f4;
  --text-muted: #a0a0a0;
}

[x-cloak] {
  display: none !important;
}

/* 动态颜色工具类 */
.text-theme {
  color: var(--theme-color) !important;
}
.bg-theme {
  background-color: var(--theme-color) !important;
}
.border-theme {
  border-color: var(--theme-color) !important;
}

/* 基础重置与现代化设置 */
body {
  font-family: var(--font-sans);
  background-color: var(--paper-bg);
  color: var(--text-main);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition:
    background-color 0.5s var(--zen-ease),
    color 0.5s var(--zen-ease);
}

/* 动态背景 Canvas - 独立加速层 */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  filter: blur(80px);
  opacity: 0.25;
  will-change: opacity;
  transition: opacity 2s var(--zen-ease);
}

[data-bs-theme='dark'] #bg-canvas {
  opacity: 0.4;
}

/* 顶部导航毛玻璃 */
.glass-header {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(20px) saturate(180%);
  position: sticky;
  top: 0;
  z-index: 1030;
  border-bottom: 1px solid var(--card-sep) !important;
}

.glass-header .navbar-brand {
  font-family: var(--font-serif);
  font-weight: 900;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  color: var(--text-main);
}

.brand-icon {
  color: var(--theme-color);
}

/* 控制台容器 */
.master-console {
  background: var(--glass-bg);
  border: 1px solid var(--card-sep);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
  margin-bottom: 2rem;
  contain: layout;
}

/* 模式切换器 */
.mode-switcher {
  background: var(--card-sep);
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--card-sep);
  display: flex;
  gap: 2px;
}

.mode-switcher .btn {
  border: none;
  border-radius: 6px !important;
  font-weight: 600;
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  transition: all 0.3s var(--zen-ease);
  color: var(--text-muted);
  background: transparent;
  white-space: nowrap;
}

.mode-switcher .btn:hover {
  background: var(--card-sep);
  color: var(--text-main);
}

.mode-switcher .btn.active {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  color: #fff !important;
}

/* 实体色卡核心 */
.zen-card {
  --hover-rotate: 0.5deg;
  --hover-y: -8px;

  background: var(--paper-bg);
  border: 1px solid var(--card-sep);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  transition:
    transform 0.4s var(--zen-ease),
    box-shadow 0.4s var(--zen-ease);
  cursor: pointer;
  contain: layout;
}

.zen-card::after {
  content: '';
  position: absolute;
  top: 15px;
  right: 15px;
  width: 10px;
  height: 10px;
  background: var(--paper-bg);
  border-radius: 50%;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
  z-index: 5;
}

.zen-card:hover {
  transform: translateY(var(--hover-y)) rotate(var(--hover-rotate));
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.color-block {
  aspect-ratio: 5 / 7;
  height: auto;
  position: relative;
  display: flex;
  justify-content: flex-end;
  padding: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4' viewBox='0 0 4 4'%3E%3Cpath fill='%23000000' fill-opacity='0.03' d='M1 3h1v1H1V3zm2-2h1v1H2V1z'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: repeat;
  transition: background 0.5s var(--zen-ease);
  overflow: hidden;
}

.color-block .name-group {
  display: flex;
  flex-direction: row-reverse;
  gap: 8px;
  align-items: flex-start;
  height: 100%;
}

.chinese-name-vertical {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3.5vh, 1.8rem);
  font-weight: 700;
  letter-spacing: 0.2rem;
  opacity: 0.95;
  white-space: nowrap;
  line-height: 1.1;
}

.pinyin-label-vertical {
  writing-mode: vertical-rl;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  opacity: 0.65;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 10px;
  white-space: nowrap;
}

/* 底部元数据 */
.card-footer {
  padding: 0.75rem;
  background: var(--paper-bg);
  border-top: 1px solid var(--card-sep);
}

.card-footer .color-metadata {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-item {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  border-bottom: 1px dashed var(--card-sep);
  padding: 4px 6px;
  margin: 0 -4px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.meta-item:hover {
  color: var(--card-text-hover, #fff) !important;
  background: var(--card-color, var(--theme-color));
  border-bottom-color: transparent;
}

.meta-item:last-child {
  border-bottom: none;
}

/* 亮度进度条样式 */
.luminance-container {
  margin-top: 6px;
  padding: 4px 2px;
}

.luminance-container .progress {
  background-color: var(--card-sep);
  border-radius: 3px;
}

.luminance-container .progress-bar {
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* 分类与分页 UI */
.cat-bar {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}

.cat-bar::-webkit-scrollbar {
  display: none;
}

.active-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 3px solid var(--theme-color);
  opacity: 0;
  transition: opacity 0.3s var(--zen-ease);
}

/* 返回顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 1040;
  transition: all 0.3s var(--zen-ease);
  font-size: 1.5rem;

  /* 默认隐藏状态 */
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
}

.back-to-top.show {
  opacity: 0.9;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top.show:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  opacity: 1;
}

.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  scrollbar-width: none;
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  .chinese-name-vertical {
    font-size: 1.3rem; /* 稍微缩小一点 */
    letter-spacing: 0.2rem;
  }

  .color-block {
    min-height: 180px;
  }
}

/* 标签样式优化 */
.tag.cursor-pointer {
  transition: all 0.2s ease;
  user-select: none;
  background: transparent;
}

.tag.cursor-pointer:hover {
  background: var(--card-sep);
}

.tag[aria-pressed='true'],
.tag.active {
  border-color: var(--theme-color) !important;
  color: var(--theme-color) !important;
  background: rgba(var(--theme-color-rgb), 0.05);
}