/* =========================================
   设计令牌
   ========================================= */
:root {
  /* 颜色系统 */
  --bg-glass-frost: rgba(255, 255, 255, 0.6);
  --bg-card: rgba(255, 255, 255, 0.6);
  --bg-button: rgba(255, 255, 255, 0.6);
  --bg-gallery: rgba(255, 255, 255, 0.3);
  --bg-hover: rgba(0, 0, 0, 0.05);
  --bg-active: rgba(0, 0, 0, 0.1);

  /* 边框 */
  --border-glass: 2px solid rgba(255, 255, 255, 0.25);
  --border-light: 2px solid rgba(255, 255, 255, 0.5);

  /* 阴影 */
  --shadow-sm: 0 5px 10px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xxl: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-inset: inset 0 4px 10px rgba(0, 0, 0, 0.15);

  /* 圆角 */
  --radius-sm: 20px;
  --radius-md: 30px;
  --radius-lg: 40px;
  --radius-xl: 60px;
  --radius-max: 80px;
  --radius-pill: 9999px;

  /* 动画时长 */
  --time-fast: 0.15s;
  --time-normal: 0.3s;
  --time-slow: 0.8s;

  /* 效果 */
  --frost-filter: saturate(150%) blur(8px);

  /* 文字颜色 */
  --text-primary: #333;
  --text-secondary: #666;

  /* 主题色 */
  --color-org: #00b351;
  --color-gld: #64acff;
  --color-ldc: #ffcc66;

  /* 布局 */
  --header-height: 80px;
  --content-max-width: 1200px;
}

/* =========================================
   基础重置
   ========================================= */
* {
  box-sizing: border-box;
}

html {
  zoom: 90%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, #D3E7FF 0%, #EAE2FF 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* =========================================
   壁纸层
   ========================================= */
.wallpaper-layer {
  position: fixed;
  inset: 0;
  background: url('../img/A62-FCA85-0811-4873-B330-5-B7348-A644-F5.jpg') no-repeat center center / cover;
  opacity: 1;
  z-index: -1;
  transition: opacity var(--time-normal) ease;
}

/* =========================================
   玻璃态效果（始终开启）
   ========================================= */
header,
.card,
main,
.dock,
.dock button,
.dock-tooltip {
  background-color: var(--bg-glass-frost);
  backdrop-filter: var(--frost-filter);
  -webkit-backdrop-filter: var(--frost-filter);
  transition: transform var(--time-normal) ease;
}

/* =========================================
   布局框架
   ========================================= */

/* 页头 */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 10px 0;
  z-index: 20;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: var(--border-glass);
}

/* 主内容区 */
main {
  width: var(--content-max-width);
  max-width: 90%;
  margin: 120px auto 60px;
  padding: 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-radius: var(--radius-max);
  box-shadow: var(--shadow-xxl);
  border: var(--border-glass);
}

/* Logo */
.logo-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.logo-group img {
  height: 40px;
}

/* =========================================
   Dock 侧边栏
   ========================================= */
.dock {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  border-radius: var(--radius-xl);
  border: var(--border-glass);
  box-shadow: var(--shadow-md);
  z-index: 10;
}

.dock-item {
  position: relative;
}

.dock-divider {
  border: none;
  height: 2px;
  background: rgba(255, 255, 255, 0.6);
  margin: 10px 0;
}

/* =========================================
   按钮系统
   ========================================= */

/* Dock 按钮 */
.dock button {
  width: 50px;
  height: 50px;
  padding: 0;
  border-radius: 50%;
  border: var(--border-glass);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition:
    transform var(--time-fast) ease,
    background-color var(--time-fast) ease;
}

.dock button:hover {
  transform: scale(1.08);
  background-color: var(--bg-active);
}

.dock button:active {
  transform: scale(0.85);
}

.dock button img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

/* Dock 提示框 */
.dock-tooltip {
  position: absolute;
  right: 100%;
  top: 50%;
  margin-right: 20px;
  padding: 10px 13px;
  border-radius: var(--radius-sm);
  color: black;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%);
  transition:
    opacity var(--time-normal) ease,
    background-color var(--time-normal) ease,
    backdrop-filter var(--time-normal) ease;
}

.dock-item:hover .dock-tooltip {
  opacity: 1;
}

/* 成员按钮 */
.member-button {
  display: inline-block;
  min-width: 100px;
  margin: 5px;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  color: black;
  text-align: center;
  text-decoration: none;
  background-color: var(--bg-button);
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  user-select: none;
  transition:
    transform var(--time-fast) ease,
    background-color var(--time-fast) ease;
}

.member-button:hover {
  transform: scale(1.08);
  background-color: var(--bg-hover);
}

.member-button:active {
  transform: scale(0.85);
}

/* 大按钮 */
.big-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 150px;
  height: 80px;
  margin-top: 10px;
  border-radius: var(--radius-pill);
  font-size: 16px;
  font-weight: 500;
  color: black;
  text-decoration: none;
  background-color: var(--bg-button);
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  pointer-events: auto;
  transition:
    transform var(--time-fast) ease,
    background-color var(--time-fast) ease;
}

.big-button:hover {
  transform: scale(1.05);
  background-color: var(--bg-hover);
}

.big-button:active {
  transform: scale(0.85);
  background-color: var(--bg-active);
}

/* =========================================
   卡片系统
   ========================================= */

/* 基础卡片 */
.card {
  width: 100%;
  max-width: 1600px;
  margin: 30px auto;
  padding: 60px;
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: var(--shadow-xxl);
  border: var(--border-glass);
  pointer-events: auto;
}

/* =========================================
   动画系统
   ========================================= */

/* 入场动画初始状态 */
header {
  transform: translateY(-100%);
  opacity: 0;
  transition:
    transform var(--time-slow) cubic-bezier(0.2, 0.8, 0.4, 1),
    opacity var(--time-slow) ease,
    background-color var(--time-normal) ease,
    backdrop-filter var(--time-normal) ease;
}

.card,
.logo-group,
#welcome-section {
  transform: translateY(40px);
  opacity: 0;
  transition:
    transform var(--time-slow) cubic-bezier(0.2, 0.8, 0.4, 1),
    opacity var(--time-slow) ease;
}

.dock button {
  transform: translateX(30px);
  opacity: 0;
  transition:
    transform 0.6s cubic-bezier(0.2, 0.8, 0.4, 1),
    opacity 0.6s ease,
    background-color var(--time-normal) ease;
}

/* 入场动画激活状态 */
.animate-in {
  transform: translate(0, 0) !important;
  opacity: 1 !important;
}

/* =========================================
   工具类
   ========================================= */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-secondary {
  color: var(--text-secondary);
}