/* ===== 雨州Minecraft - 现代化设计 ===== */

:root {
  --bg: #ffffff;
  --bg-section: #f5f5f5;
  --bg-card: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.85);
  --text: #1a1a1a;
  --text-muted: #666666;
  --text-tertiary: #999999;
  --border: #e5e5e5;
  --border-hover: #d0d0d0;
  --accent: #0078d4;
  --accent-hover: #106ebe;
  --accent-bg: rgba(0, 120, 212, 0.08);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --sidebar-w: 80px;
  --topbar-h: 64px;
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --bg-section: #222222;
  --bg-card: #252525;
  --glass-bg: rgba(26, 26, 26, 0.85);
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-tertiary: #6e7681;
  --border: #30363d;
  --border-hover: #484f58;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-bg: rgba(88, 166, 255, 0.12);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

body.loading {
  overflow: hidden;
  height: 100vh;
}

/* ===== 侧边导航栏 ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
  transition: background var(--transition), border-color var(--transition);
}

.sidebar-logo {
  width: 44px;
  height: 44px;
  margin-bottom: 32px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.sidebar-link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1.2rem;
  transition: background var(--transition), color var(--transition);
}

.sidebar-link:hover {
  background: var(--accent-bg);
  color: var(--accent);
}

.sidebar-link.active {
  background: var(--accent-bg);
  color: var(--accent);
}

.sidebar-action {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.sidebar-btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.sidebar-btn:hover {
  background: var(--accent-bg);
  color: var(--accent);
}

.nav-label {
  display: none;
}

.sidebar-hamburger {
  display: none;
}

.sidebar-title {
  display: none;
}

/* ===== 语言切换菜单 ===== */
.lang-toggle-wrapper {
  position: relative;
}

.lang-menu {
  display: none;
  position: absolute;
  left: 64px;
  bottom: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1100;
  flex-direction: column;
  padding: 4px;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.lang-menu.open {
  display: flex;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
}

.lang-menu-item {
  display: block;
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.lang-menu-item:hover {
  background: var(--accent-bg);
  color: var(--accent);
}

.lang-menu-item.active {
  background: var(--accent-bg);
  color: var(--accent);
  font-weight: 600;
}

/* ===== 顶部栏 ===== */
.topbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-w);
  right: 0;
  height: var(--topbar-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  transition: background var(--transition), border-color var(--transition);
}

.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.topbar-actions {
  display: flex;
  gap: 12px;
}

/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  padding-top: var(--topbar-h);
}

.page-content {
  display: none;
}

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

/* ===== 通用卡片 ===== */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.btn:hover {
  background: var(--bg-section);
  border-color: var(--border-hover);
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--bg-section);
  border-color: var(--border-hover);
}

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--accent-bg);
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
}

/* ===== 加载界面 ===== */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.loading-screen.active {
  opacity: 1;
  pointer-events: auto;
}

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

.loading-logo {
  width: 80px;
  height: 80px;
  opacity: 0.6;
}

/* ===== 页脚 ===== */
.footer {
  margin-left: var(--sidebar-w);
  padding: 32px 40px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: border-color var(--transition);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

/* ===== 导航标签文字（桌面隐藏，移动显示） ===== */
.nav-label {
  display: none;
}

.sidebar-hamburger {
  display: none;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    height: 56px;
    flex-direction: row;
    align-items: center;
    padding: 0 16px;
    bottom: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .sidebar-logo {
    width: 36px;
    height: 36px;
    margin: 0;
  }

  .sidebar-nav {
    display: flex;
    position: fixed;
    inset: 56px 0 0 0;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: none;
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    z-index: 999;
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  }

  .sidebar-nav.open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }

  .sidebar-link {
    width: 100%;
    height: auto;
    justify-content: flex-start;
    padding: 12px 16px;
    gap: 12px;
    font-size: 1rem;
  }

  .sidebar-link i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
  }

  .nav-label {
    display: inline;
  }

  .sidebar-action {
    flex-direction: row;
    margin-top: 0;
    margin-left: auto;
    padding-top: 0;
    border-top: none;
  }

  .sidebar-btn {
    width: 42px;
    height: 42px;
  }

  .sidebar-hamburger {
    display: block;
  }

  .sidebar-title {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-left: 8px;
  }

  .lang-menu {
    left: auto;
    right: 0;
    bottom: auto;
    top: 100%;
    transform: translateY(-10px);
  }

  .lang-menu.open {
    transform: translateY(0);
  }

  @media (max-width: 320px) {
    .sidebar-title {
      display: none;
    }
  }

  .nav-logo {
    display: flex;
    align-items: center;
  }

  .topbar {
    display: none;
  }

  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }

  .footer {
    margin-left: 0;
    padding: 24px 20px;
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}