/* 修改说明: 2026-03-10 登录/注册服务接入后的样式调整 */
/* 首页模块专用样式 - 基于COD项目优秀设计重构 */

/* ===== 首页模块专用样式 ===== */
/* 注意：全局CSS变量已在main.css中定义，此处仅定义首页模块专用变量，避免覆盖全局变量 */
:root {
  /* 首页模块专用变量 */
  --homepage-primary-color: #3b82f6;
  --homepage-primary-dark: #2563eb;
  --homepage-primary-light: #60a5fa;

  /* 兼容变量（确保使用全局变量） */
  --space-1: var(--spacing-xs);
  --space-2: var(--spacing-sm);
  --space-3: calc(var(--spacing-sm) + var(--spacing-xs));
  --space-4: var(--spacing-md);
  --space-5: calc(var(--spacing-md) + var(--spacing-xs));
  --space-6: var(--spacing-lg);
  --space-7: calc(var(--spacing-lg) + var(--spacing-xs));
  --space-8: var(--spacing-xl);

  --radius-sm: var(--border-radius-sm);
  --radius-md: var(--border-radius);
  --radius-lg: var(--border-radius-lg);
  --radius-full: 9999px;

  --text-xs: var(--font-size-xs);
  --text-sm: var(--font-size-sm);
  --text-base: var(--font-size-md);
  --text-lg: var(--font-size-lg);
  --text-xl: var(--font-size-xl);
  --text-2xl: var(--font-size-xxl);

  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
}
/* ===== 首页模块专用样式 ===== */
/* 注意：全局CSS变量已在main.css中定义，此处不再重复定义，避免样式冲突 */

/* ===== 首页容器 ===== */
.homepage-container {
  min-height: 100vh;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
}

/* ===== 侧边栏导航 ===== */
.sidebar {
  width: 280px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0) 18%),
    linear-gradient(180deg, #131c2b 0%, #0f172a 100%);
  border-right: 1px solid rgba(107, 132, 179, 0.18);
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 1000;
  box-shadow:
    20px 0 44px rgba(2, 6, 23, 0.34),
    inset -1px 0 0 rgba(255, 255, 255, 0.04);
}

.sidebar::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(96, 165, 250, 0.16) 0%,
    rgba(148, 163, 184, 0.22) 20%,
    rgba(148, 163, 184, 0.1) 80%,
    rgba(96, 165, 250, 0.14) 100%
  );
  pointer-events: none;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid rgba(120, 143, 179, 0.16);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.sidebar-header::after {
  content: "";
  position: absolute;
  left: var(--spacing-lg);
  right: var(--spacing-lg);
  bottom: -1px;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(59, 130, 246, 0.18),
    rgba(255, 255, 255, 0.02) 55%,
    rgba(59, 130, 246, 0.12)
  );
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-light);
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.sidebar-logo i {
  color: var(--primary-color);
  font-size: var(--font-size-xxl);
}

.logo-text {
  font-size: var(--font-size-lg);
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.sidebar-toggle:hover {
  background: var(--bg-light);
  color: var(--text-light);
}

.sidebar-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sidebar-nav {
  list-style: none;
  padding: 0;
  margin: var(--spacing-lg) 0 0 0;
}

.nav-item {
  margin-bottom: var(--spacing-xs);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  border-left: 3px solid transparent;
  border-radius: 0 14px 14px 0;
  border-top: 1px solid transparent;
  border-right: 1px solid transparent;
  border-bottom: 1px solid transparent;
  margin-right: var(--spacing-md);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-light);
  border-left-color: var(--primary-color);
  border-top-color: rgba(107, 132, 179, 0.16);
  border-right-color: rgba(107, 132, 179, 0.16);
  border-bottom-color: rgba(107, 132, 179, 0.16);
}

.nav-item.active .nav-link {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.24) 0%,
    rgba(37, 99, 235, 0.16) 100%
  );
  color: #ffffff;
  border-left-color: #60a5fa;
  border-top-color: rgba(96, 165, 250, 0.22);
  border-right-color: rgba(96, 165, 250, 0.22);
  border-bottom-color: rgba(96, 165, 250, 0.22);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 10px 20px rgba(2, 6, 23, 0.22);
}

.nav-link i {
  width: 20px;
  text-align: center;
  font-size: var(--font-size-lg);
}

.nav-text {
  font-size: var(--font-size-md);
  font-weight: 500;
}

/* 导航分组样式 */
.nav-section {
  margin-top: var(--spacing-lg);
  border-top: 1px solid rgba(120, 143, 179, 0.16);
  padding-top: var(--spacing-lg);
}

.nav-section-title {
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.nav-submenu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-submenu .nav-link {
  padding-left: calc(var(--spacing-lg) + 20px);
  font-size: var(--font-size-sm);
}

.nav-submenu .nav-link i {
  font-size: var(--font-size-md);
}

/* ===== 主要内容区域包装器 ===== */
.main-wrapper {
  flex: 1;
  margin-left: 280px;
  width: calc(100% - 280px);
  overflow: hidden;
}

.sidebar.collapsed + .main-wrapper {
  margin-left: 80px;
  width: calc(100% - 80px);
}

/* ===== 顶部导航栏 ===== */
.top-navbar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  min-height: 60px;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background: var(--bg-light);
  color: var(--text-light);
}

.navbar-left .system-title {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-info-top {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 6px 12px;
  background: linear-gradient(
    135deg,
    rgba(32, 42, 54, 0.9),
    rgba(22, 28, 36, 0.9)
  );
  border-radius: 999px;
  border: 1px solid rgba(88, 120, 168, 0.35);
  box-shadow: 0 10px 22px rgba(7, 12, 20, 0.35);
}

.user-avatar-small {
  width: 40px;
  height: 40px;
  background: radial-gradient(circle at 30% 20%, #4ea0ff, #1f4fae);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-md);
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 16px rgba(8, 13, 24, 0.35);
  transition: all 0.3s ease;
}

.user-avatar-small:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.user-avatar-small img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.user-avatar-small:hover img {
  transform: scale(1.1);
}

.user-info-top .user-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.user-info-top .user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #f2f6ff;
}

.user-info-top .user-role {
  font-size: var(--font-size-xs);
  color: rgba(208, 221, 240, 0.85);
}

.auth-buttons-top {
  display: flex;
  gap: var(--spacing-sm);
}

#login-btn-top,
#login-btn-sidebar,
#login-modal .btn-login {
  background: linear-gradient(
    135deg,
    var(--homepage-primary-color),
    var(--homepage-primary-dark)
  );
  border-color: rgba(59, 130, 246, 0.9);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
}

#login-btn-top:hover,
#login-btn-sidebar:hover,
#login-modal .btn-login:hover {
  background: linear-gradient(
    135deg,
    var(--homepage-primary-light),
    var(--homepage-primary-color)
  );
  border-color: rgba(96, 165, 250, 0.95);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.26);
}

#login-btn-top:focus-visible,
#login-btn-sidebar:focus-visible,
#login-modal .btn-login:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(59, 130, 246, 0.22),
    0 10px 24px rgba(37, 99, 235, 0.22);
}

/* ===== 主要内容区域 - MF系统风格 ===== */
/* 注意：.main-content 样式已移至 main.css 文件，此处不再重复定义 */

/* ===== 欢迎区域 ===== */
.dashboard-welcome {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  padding: 1.5rem;
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.dashboard-welcome h2 {
  margin: 0 0 0.5rem 0;
  font-size: 2rem;
}

.dashboard-info {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* ===== 统计区域 ===== */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.dashboard-stat-card {
  background: var(--bg-light);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  border-left: 4px solid var(--primary-color);
}

.dashboard-stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-color);
  margin: 0;
}

.dashboard-stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0.5rem 0 0 0;
}

/* ===== 快速登录提示 ===== */
.quick-login-tip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.5rem;
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  border-radius: 4px;
  font-size: 0.85rem;
  color: #4caf50;
}

.quick-login-tip i {
  font-size: 0.9rem;
}

/* ===== 新的首页卡片样式 ===== */

/* 快速操作卡片 */
.dashboard-card.quick-actions .action-buttons {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: rgba(33, 150, 243, 0.1);
  border: 1px solid rgba(33, 150, 243, 0.3);
  border-radius: 6px;
  color: #2196f3;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.action-btn:hover {
  background: rgba(33, 150, 243, 0.2);
  transform: translateY(-1px);
}

.action-btn i {
  font-size: 0.9rem;
}

/* 最近活动卡片 */
.dashboard-card.recent-activities .activity-list {
  margin-top: 1rem;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.activity-item i {
  color: #ff9800;
  font-size: 0.9rem;
}

.activity-item span:first-of-type {
  flex: 1;
  font-size: 0.9rem;
}

.activity-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 数据统计卡片 */
.dashboard-card.data-stats .stat-charts {
  margin-top: 1rem;
}

.stat-chart {
  margin-bottom: 1rem;
}

.stat-chart:last-child {
  margin-bottom: 0;
}

.chart-title {
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.chart-bar {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  height: 24px;
  position: relative;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #4caf50, #8bc34a);
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding-left: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: white;
  min-width: 80px;
}

/* 系统公告卡片 */
.dashboard-card.system-announcement .announcement-content {
  margin-top: 1rem;
}

.dashboard-card.system-announcement .announcement-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.dashboard-card.system-announcement .announcement-card-header h3 {
  margin: 0;
}

.announcement-more-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-light);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.announcement-more-link:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.35);
  color: #dbeafe;
}

.announcement-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #ff9800;
}

.announcement-text {
  font-size: 0.9rem;
  line-height: 1.4;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.announcement-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 帮助支持卡片 */
.dashboard-card.help-support .help-links {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.help-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem;
  background: rgba(156, 39, 176, 0.1);
  border-radius: 6px;
  color: #9c27b0;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.help-link:hover {
  background: rgba(156, 39, 176, 0.2);
  transform: translateX(5px);
}

.help-link i {
  font-size: 0.9rem;
}

/* ===== 功能卡片区域 ===== */
.dashboard-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.dashboard-card {
  background: var(--bg-secondary);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  cursor: pointer;
  border: 1px solid var(--border-color);
}

.dashboard-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.dashboard-card-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.dashboard-card h3 {
  margin: 0 0 0.5rem 0;
  color: var(--text-light);
  font-size: 1.2rem;
}

.dashboard-card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== 快速操作区域 ===== */
.quick-actions-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.quick-actions-section h2 {
  margin: 0 0 var(--spacing-lg) 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.quick-actions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.quick-action-btn {
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  color: var(--text-secondary);
  text-decoration: none;
}

.quick-action-btn:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.quick-action-btn i {
  font-size: var(--font-size-xxl);
  margin-bottom: var(--spacing-xs);
}

.quick-action-btn span {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ===== 最新赛事区域 ===== */
.events-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.view-all-link {
  color: var(--primary-color);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: var(--transition-fast);
}

.view-all-link:hover {
  text-decoration: underline;
}

.events-grid {
  display: grid;
  gap: var(--spacing-md);
}

/* ===== 积分榜预览区域 ===== */
.rankings-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.rankings-preview {
  background: var(--bg-light);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

/* ===== 按钮样式 ===== */
.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

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

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--bg-light);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  color: var(--text-light);
}

/* ===== 模态框样式 ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 9999;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  margin: 5% auto;
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.modal-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.modal-icon {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
}

.modal-header h3 {
  margin: 0;
  font-size: var(--font-size-xl);
  color: var(--text-light);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
}

.modal-close:hover {
  background: var(--bg-light);
  color: var(--text-light);
}

.modal-body {
  padding: var(--spacing-xl);
}

#login-modal {
  padding: 24px;
  backdrop-filter: blur(10px);
}

#login-modal .login-modal-content {
  width: min(94vw, 980px);
  margin: min(5vh, 48px) auto;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(96, 165, 250, 0.16);
  background:
    linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96)),
    linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(37, 99, 235, 0.04));
  box-shadow: 0 36px 90px rgba(2, 6, 23, 0.55);
}

#login-modal .modal-header {
  padding: 24px 28px 18px;
  background: linear-gradient(
    180deg,
    rgba(59, 130, 246, 0.14),
    rgba(37, 99, 235, 0.03)
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

#login-modal .modal-header-content {
  gap: 0;
}

#login-modal .modal-header h3 {
  font-size: 24px;
  letter-spacing: 0.2px;
}

#login-modal .login-modal-subtitle {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

#login-modal .modal-body {
  padding: 0;
}

#login-modal .auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 18px 28px 0;
  background: rgba(17, 24, 39, 0.65);
}

#login-modal .auth-tab {
  border: 1px solid transparent;
  background: rgba(15, 23, 42, 0.75);
  color: var(--text-muted);
  border-radius: 14px;
  padding: 12px 0;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

#login-modal .auth-tab.active {
  color: var(--text-light);
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(59, 130, 246, 0.18);
  box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.3);
}

#login-modal .auth-tab:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

#login-modal .auth-panel {
  display: none;
}

#login-modal .auth-panel.active {
  display: block;
}

#login-modal .login-modal-layout {
  display: block;
}

#login-modal .role-selection {
  padding: 18px 20px;
  border: 1px solid rgba(96, 165, 250, 0.16);
  border-radius: 18px;
  background: linear-gradient(
    165deg,
    rgba(59, 130, 246, 0.08),
    rgba(15, 23, 42, 0.36)
  );
}

#login-modal .role-selection-header {
  margin-bottom: 14px;
}

#login-modal .role-selection h4 {
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-light);
  letter-spacing: 0.4px;
}

#login-modal .role-selection-header p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

#login-modal .role-buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

#login-modal .role-btn {
  width: 100%;
  min-height: 50px;
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.25);
  background: rgba(31, 41, 55, 0.5);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

#login-modal .role-btn:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.45);
  transform: translateY(-1px);
}

#login-modal .role-btn.active {
  color: var(--text-light);
  border-color: var(--primary-color);
  background: rgba(59, 130, 246, 0.22);
  box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.35);
}

#login-modal .role-btn i {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  color: var(--primary-light);
}

#login-modal .login-form {
  padding: 28px 32px 32px;
  display: grid;
  gap: 18px;
  align-content: start;
  background:
    radial-gradient(
      circle at top right,
      rgba(59, 130, 246, 0.12),
      transparent 38%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.02),
      rgba(255, 255, 255, 0.01)
    );
}

#login-modal .form-group {
  display: grid;
  gap: 9px;
}

#login-modal .form-group label {
  font-size: 14px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

#login-modal .form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

#login-modal .form-group input {
  width: 100%;
  height: 52px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.76);
  color: var(--text-light);
  padding: 0 16px;
  font-size: 15px;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

#login-modal .form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

#login-modal .role-info {
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  max-width: none;
}

#login-modal .role-info-content {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.6;
}

#login-modal .form-actions {
  margin-top: 8px;
  display: grid;
  gap: 12px;
}

#login-modal .btn-login {
  width: 100%;
  min-height: 54px;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.2px;
  border-radius: 14px;
}

#login-modal .btn-link {
  background: none;
  border: none;
  color: var(--primary-light);
  font-size: 13px;
  cursor: pointer;
  text-align: center;
}

#login-modal .btn-link:hover {
  color: var(--text-light);
  text-decoration: underline;
}

#login-modal .register-panel {
  padding: 28px;
  display: grid;
  gap: 18px;
}

#login-modal .register-intro h4 {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 6px;
}

#login-modal .register-intro p {
  color: var(--text-muted);
  font-size: 13px;
}

#login-modal .register-options {
  display: grid;
  gap: 12px;
}

#login-modal .register-card {
  border: 1px solid rgba(59, 130, 246, 0.2);
  background: rgba(15, 23, 42, 0.7);
  color: var(--text-light);
  border-radius: 16px;
  padding: 18px;
  text-align: left;
  cursor: pointer;
  display: grid;
  gap: 12px;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

#login-modal .register-card:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 130, 246, 0.45);
  background: rgba(30, 64, 175, 0.18);
}

#login-modal .register-card-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
}

#login-modal .register-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 18px;
}

#login-modal .register-card h5 {
  margin: 0;
  font-size: 15px;
}

#login-modal .register-card p {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.5;
}

#login-modal .register-cta {
  font-size: 13px;
  color: var(--primary-light);
  font-weight: 600;
}

#login-modal .register-footer {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
}

#login-modal .modal-close {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#login-modal .modal-close:focus-visible,
#login-modal .auth-tab:focus-visible,
#login-modal .register-card:focus-visible,
#login-modal .role-btn:focus-visible,
#login-modal .btn-login:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  #login-modal {
    padding: 12px;
  }

  #login-modal .login-modal-content {
    width: 100%;
    margin: 16px auto;
    border-radius: 18px;
  }

  #login-modal .modal-header {
    padding: 16px 16px 14px;
  }

  #login-modal .login-modal-layout {
    display: block;
  }

  #login-modal .role-selection {
    padding: 16px;
  }

  #login-modal .login-form {
    padding: 18px 16px 20px;
  }

  #login-modal .role-buttons {
    grid-template-columns: 1fr;
  }

  #login-modal .auth-tabs {
    padding: 14px 16px 0;
  }

  #login-modal .register-panel {
    padding: 16px;
  }
}

/* ===== 加载状态 ===== */
.loading-spinner {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
  font-size: var(--font-size-md);
}

.no-data {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
  font-style: italic;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
  .main-content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-content {
    padding: var(--spacing-md);
  }

  .top-navbar {
    padding: var(--spacing-sm);
    flex-direction: row;
    gap: var(--spacing-sm);
    min-height: 50px;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 280px;
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .main-wrapper {
    margin-left: 0;
    width: 100%;
  }

  .dashboard-header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }

  .system-info {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .quick-actions-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--spacing-md);
  }

  .dashboard-header {
    padding: var(--spacing-lg);
  }

  .welcome-section h2 {
    font-size: var(--font-size-xl);
  }

  .welcome-section p {
    font-size: var(--font-size-md);
  }

  .sidebar {
    width: 100%;
  }
}

/* ===== 协调化微调（ui-ux-pro-max） ===== */
.sidebar {
  background:
    linear-gradient(
      180deg,
      rgba(96, 165, 250, 0.1) 0%,
      rgba(17, 24, 39, 0) 18%
    ),
    linear-gradient(180deg, #131c2b 0%, #0f172a 100%);
  backdrop-filter: blur(8px);
  border-right: 1px solid rgba(148, 163, 184, 0.26);
  box-shadow:
    22px 0 48px rgba(2, 6, 23, 0.42),
    inset -1px 0 0 rgba(255, 255, 255, 0.08);
}

.sidebar-header {
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.12), transparent);
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.sidebar-nav {
  margin-top: var(--spacing-md);
  padding: 0 var(--spacing-sm);
}

.nav-section {
  margin: var(--spacing-md) 0 0;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(148, 163, 184, 0.16);
}

.nav-section-title {
  margin: 0 var(--spacing-sm) var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.nav-link {
  border-radius: var(--border-radius);
  margin: 0 6px;
  padding: 11px 14px;
  border-left-width: 3px;
  border-left-style: solid;
  border-left-color: transparent;
  border-top: 1px solid transparent;
  border-right: 1px solid transparent;
  border-bottom: 1px solid transparent;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-left-color: var(--primary-color);
  border-top-color: rgba(96, 165, 250, 0.14);
  border-right-color: rgba(96, 165, 250, 0.14);
  border-bottom-color: rgba(96, 165, 250, 0.14);
  box-shadow:
    inset 0 0 0 1px rgba(59, 130, 246, 0.12),
    0 8px 18px rgba(2, 6, 23, 0.16);
}

.nav-item.active .nav-link {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.24) 0%,
    rgba(37, 99, 235, 0.16) 100%
  );
  color: #ffffff;
  border-left-color: var(--primary-color);
  border-top-color: rgba(96, 165, 250, 0.22);
  border-right-color: rgba(96, 165, 250, 0.22);
  border-bottom-color: rgba(96, 165, 250, 0.22);
  box-shadow:
    inset 0 0 0 1px rgba(59, 130, 246, 0.18),
    0 10px 20px rgba(2, 6, 23, 0.24);
}

.top-navbar {
  background: var(--bg-primary);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) var(--spacing-xl);
}

.user-info-top {
  backdrop-filter: blur(4px);
}

.dashboard-welcome {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: var(--shadow-md);
}

.dashboard-card,
.quick-actions-section,
.events-section,
.rankings-section {
  box-shadow: var(--shadow-md);
}

.dashboard-card:hover {
  transform: translateY(-3px);
}

.quick-action-btn {
  box-shadow: var(--shadow-sm);
}

.quick-action-btn:hover {
  box-shadow: var(--shadow-md);
}

.btn-primary {
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  box-shadow: var(--shadow-sm);
}

.modal-content {
  box-shadow: var(--shadow-lg);
}

/* 首页内容统一边距 */
.homepage-page {
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.homepage-page .dashboard-welcome,
.homepage-page .dashboard-stats,
.homepage-page .dashboard-cards {
  margin-bottom: 0;
}

.homepage-page .dashboard-cards {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .nav-link {
    margin: 0 8px;
  }

  .homepage-page {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }

  .top-navbar {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}