/* ===== 班级助理前端共享样式 =====
   独立设计系统：现代工具风（Linear / Notion 风格）
   中性 Zinc 底 + 单一 Indigo 强调色，小圆角，列表行组件，双主题
   与既有 Qxwk 项目风格完全分离 */

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

:root {
  color-scheme: light;
  /* 中性色（Zinc 冷灰） */
  --bg: #fafafa;
  --surface: #ffffff;
  --surface-hover: #f4f4f5;
  --text: #18181b;
  --text-secondary: #52525b;
  --text-tertiary: #a1a1aa;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  /* 强调色（唯一 accent，Indigo） */
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --accent-soft: #eef2ff;
  /* 语义色 */
  --success: #059669;
  --success-soft: #ecfdf5;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  /* 形状：统一小圆角 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  /* 阴影（带底色 tint） */
  --shadow-sm: 0 1px 2px rgba(24, 24, 27, 0.04), 0 1px 3px rgba(24, 24, 27, 0.06);
  --shadow-md: 0 4px 12px rgba(24, 24, 27, 0.08);
  /* 排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container: 880px;
  --nav-height: 60px;
  --transition: 0.15s ease;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #09090b;
  --surface: #18181b;
  --surface-hover: #27272a;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --border: #27272a;
  --border-strong: #3f3f46;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-soft: rgba(99, 102, 241, 0.15);
  --success: #34d399;
  --success-soft: rgba(16, 185, 129, 0.12);
  --danger: #f87171;
  --danger-soft: rgba(239, 68, 68, 0.12);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 导航（白底 + 细边框，无毛玻璃） ===== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }
.navbar-inner {
  max-width: var(--container); margin: 0 auto; height: var(--nav-height); padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.navbar-brand {
  display: flex; align-items: center; gap: 10px; text-decoration: none;
  color: var(--text); font-weight: 600; font-size: 1rem; transition: opacity var(--transition);
}
.navbar-brand:hover { opacity: 0.85; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 7px; background: var(--accent);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.navbar-nav { display: flex; align-items: stretch; height: var(--nav-height); }
.nav-link {
  position: relative; display: inline-flex; align-items: center; padding: 0 14px;
  color: var(--text-secondary); text-decoration: none; font-size: 0.92rem; font-weight: 500;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--accent); font-weight: 600; }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 2px;
  background: var(--accent); border-radius: 2px 2px 0 0;
}
.navbar-actions { display: flex; align-items: center; gap: 10px; }

/* 主题切换：描边方形小按钮 */
.theme-toggle {
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: none; color: var(--text-secondary); cursor: pointer;
  transition: all var(--transition);
}
.theme-toggle:hover { color: var(--text); background: var(--surface-hover); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ===== 布局 ===== */
.main { flex: 1; padding: 40px 24px 60px; }
.container { max-width: var(--container); margin: 0 auto; }
.page-head { margin-bottom: 28px; }
.page-title { font-size: clamp(1.4rem, 3vw, 1.8rem); font-weight: 700; letter-spacing: -0.01em; line-height: 1.25; }
.page-desc { font-size: 0.9rem; color: var(--text-secondary); margin-top: 6px; max-width: 60ch; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius-md); font-size: 0.92rem; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all var(--transition);
  font-family: inherit; text-decoration: none; line-height: 1.4;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--text-tertiary); background: var(--surface-hover); }
.btn-danger { background: transparent; border-color: rgba(220, 38, 38, 0.35); color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn-block { width: 100%; }
.btn-lg { padding: 11px 24px; font-size: 0.98rem; }

/* ===== 列表行（通知/活动） ===== */
.list { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.list-row {
  display: flex; align-items: center; gap: 16px; width: 100%;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  background: none; border-top: none; border-left: none; border-right: none;
  text-align: left; cursor: pointer; font-family: inherit;
  transition: background var(--transition);
}
.list-row:last-child { border-bottom: none; }
.list-row:hover { background: var(--surface-hover); }
.list-row-main { flex: 1; min-width: 0; }
.list-row-title {
  font-size: 0.98rem; font-weight: 600; color: var(--text); margin-bottom: 4px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.list-row-meta { font-size: 0.82rem; color: var(--text-tertiary); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.list-row-arrow { color: var(--text-tertiary); flex-shrink: 0; transition: transform var(--transition), color var(--transition); }
.list-row:hover .list-row-arrow { transform: translateX(3px); color: var(--accent); }

/* ===== 来源标签 ===== */
.badge {
  display: inline-flex; align-items: center; padding: 2px 8px; border-radius: var(--radius-sm);
  font-size: 0.75rem; font-weight: 500; line-height: 1.5;
}
.badge-manual { background: var(--accent-soft); color: var(--accent); }
.badge-crawler { background: var(--success-soft); color: var(--success); }
.badge-webhook { background: var(--surface-hover); color: var(--text-secondary); }

/* ===== 详情 ===== */
.detail-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 36px 40px; max-width: 760px; margin: 0 auto;
}
.detail-title { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.01em; line-height: 1.3; margin-bottom: 16px; }
.detail-meta {
  display: flex; flex-wrap: wrap; gap: 8px 20px; padding-bottom: 20px; margin-bottom: 24px;
  border-bottom: 1px solid var(--border); font-size: 0.85rem; color: var(--text-secondary);
}
.detail-meta span { display: inline-flex; align-items: center; gap: 6px; }
.detail-body { font-size: 0.98rem; line-height: 1.8; color: var(--text); white-space: pre-wrap; word-break: break-word; }

/* ===== 表单 ===== */
.form-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 36px 40px; max-width: 420px; margin: 0 auto; box-shadow: var(--shadow-sm);
}
.tabs { display: flex; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 3px; margin-bottom: 24px; }
.tab {
  flex: 1; text-align: center; padding: 8px 0; border: none; background: none; border-radius: 5px;
  font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); cursor: pointer;
  font-family: inherit; transition: all var(--transition);
}
.tab.active { background: var(--surface); color: var(--accent); font-weight: 600; box-shadow: var(--shadow-sm); }
.form-field { margin-bottom: 18px; }
.form-label { display: block; font-size: 0.86rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-input {
  width: 100%; padding: 9px 12px; font-size: 0.92rem; font-family: inherit;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: var(--bg); color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form-note { font-size: 0.8rem; color: var(--text-tertiary); margin-top: 5px; }
.field-error { font-size: 0.8rem; color: var(--danger); margin-top: 6px; display: none; }
.field-error.show { display: block; }
.form-error { font-size: 0.85rem; color: var(--danger); margin-bottom: 14px; display: none; }
.form-error.show { display: block; }
.form-success { font-size: 0.85rem; color: var(--success); margin-bottom: 14px; display: none; }
.form-success.show { display: block; }

/* ===== 状态 ===== */
.state { text-align: center; padding: 48px 20px; color: var(--text-secondary); }
.state svg { width: 32px; height: 32px; color: var(--text-tertiary); margin-bottom: 12px; }
.state p { font-size: 0.9rem; }
.state.error { color: var(--danger); }

/* 骨架屏（匹配列表行形状） */
@keyframes sk-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }
.skeleton-row { display: flex; flex-direction: column; gap: 8px; padding: 17px 20px; border-bottom: 1px solid var(--border); }
.skeleton-row:last-child { border-bottom: none; }
.skeleton-line { display: block; height: 12px; border-radius: 4px; background: var(--border); animation: sk-pulse 1.6s ease-in-out infinite; }
.skeleton-line.w60 { width: 60%; }
.skeleton-line.w35 { width: 35%; }
.skeleton-line.w80 { width: 80%; }

/* ===== 个人中心 ===== */
.profile-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px 36px; max-width: 560px;
}
.profile-head { display: flex; align-items: center; gap: 16px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.profile-avatar {
  width: 52px; height: 52px; border-radius: var(--radius-md); flex-shrink: 0;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center; font-size: 1.25rem; font-weight: 700;
}
.profile-name { font-size: 1.15rem; font-weight: 700; color: var(--text); }
.profile-sub { font-size: 0.85rem; color: var(--text-tertiary); margin-top: 2px; }
.info-list { margin-top: 8px; }
.info-row {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 12px 4px; border-bottom: 1px solid var(--border); font-size: 0.9rem;
}
.info-row:last-child { border-bottom: none; }
.info-row .k { color: var(--text-secondary); flex-shrink: 0; }
.info-row .v { color: var(--text); text-align: right; word-break: break-all; }
.profile-actions { display: flex; gap: 12px; margin-top: 24px; }
.profile-actions .btn { flex: 1; }

/* ===== 登录/注册品牌区 ===== */
.auth-brand { text-align: center; margin-bottom: 24px; }
.auth-mark { width: 44px; height: 44px; border-radius: 11px; margin: 0 auto 12px; }
.auth-title { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em; }

/* ===== 登录面板（应用壳内） ===== */
.login-panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 36px; box-shadow: var(--shadow-md); }

/* ===== 首页 ===== */
.hero { padding: 56px 0 8px; }
.hero-title { font-size: clamp(2rem, 5vw, 2.6rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 14px; }
.hero-sub { font-size: 1.02rem; color: var(--text-secondary); max-width: 480px; margin-bottom: 28px; }
.greeting { font-size: 1.02rem; color: var(--text-secondary); margin-bottom: 24px; }
.greeting strong { color: var(--text); font-weight: 700; }
.feature-list { margin-top: 48px; border-top: 1px solid var(--border); }
.feature-row { display: flex; align-items: flex-start; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--border); }
.feature-icon {
  width: 38px; height: 38px; border-radius: var(--radius-md); flex-shrink: 0;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
}
.feature-icon svg { width: 19px; height: 19px; }
.feature-title { font-size: 0.98rem; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.feature-desc { font-size: 0.88rem; color: var(--text-secondary); }
.section-block { margin-top: 40px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.section-title { font-size: 1.05rem; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
.link-more { font-size: 0.85rem; color: var(--accent); text-decoration: none; font-weight: 500; white-space: nowrap; }
.link-more:hover { text-decoration: underline; }

/* ===== 应用壳（登录后：左侧固定栏 + 右侧内容区） ===== */
body.app-mode { overflow: hidden; }
.app-shell { display: flex; height: 100dvh; }
.sidebar {
  width: 260px; flex-shrink: 0; background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: width var(--transition);
}
.sidebar.collapsed { width: 68px; }
.sidebar-brand {
  display: flex; align-items: center; gap: 10px; padding: 18px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text); font-weight: 600; font-size: 0.98rem; text-decoration: none;
  white-space: nowrap; overflow: hidden;
}
.sidebar-brand:hover { opacity: 0.85; }
.sidebar-brand .brand-text { overflow: hidden; text-overflow: ellipsis; }
.sidebar.collapsed .sidebar-brand { justify-content: center; padding: 18px 0; }
.sidebar.collapsed .brand-text { display: none; }
.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.side-link {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 9px 12px; margin-bottom: 2px; border-radius: var(--radius-md);
  background: none; border: none; cursor: pointer; font-family: inherit; text-align: left;
  color: var(--text-secondary); font-size: 0.92rem; font-weight: 500;
  transition: all var(--transition); white-space: nowrap;
}
.side-link:hover { background: var(--surface-hover); color: var(--text); }
.side-link.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.side-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar.collapsed .side-link { justify-content: center; padding: 10px 0; }
.sidebar.collapsed .side-link .side-text { display: none; }
.sidebar-bottom { padding: 10px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }
.sidebar-tools { display: flex; gap: 8px; }
.sidebar.collapsed .sidebar-tools { flex-direction: column; align-items: center; }
.icon-btn {
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: none; color: var(--text-secondary); cursor: pointer; transition: all var(--transition);
}
.icon-btn:hover { color: var(--text); background: var(--surface-hover); }
.icon-btn svg { width: 16px; height: 16px; }
.sidebar-user {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px; border-radius: var(--radius-md); cursor: pointer;
  background: none; border: none; font-family: inherit; text-align: left;
  transition: background var(--transition);
}
.sidebar-user:hover { background: var(--surface-hover); }
.sidebar-user.active { background: var(--accent-soft); }
.sidebar-user.active .user-avatar { background: var(--accent); color: #fff; }
.sidebar-user.active .user-name { color: var(--accent); }
.sidebar-tools .icon-close { display: none; }
.sidebar.collapsed .sidebar-tools .icon-open { display: none; }
.sidebar.collapsed .sidebar-tools .icon-close { display: block; }
.user-avatar {
  width: 32px; height: 32px; border-radius: var(--radius-md); flex-shrink: 0;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center; font-size: 0.9rem; font-weight: 700;
}
.user-info { min-width: 0; overflow: hidden; }
.user-name { font-size: 0.88rem; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-sub { font-size: 0.75rem; color: var(--text-tertiary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar.collapsed .sidebar-user { justify-content: center; padding: 8px 0; }
.sidebar.collapsed .user-info { display: none; }
.sidebar-bottom .btn { width: 100%; }
.sidebar.collapsed .sidebar-bottom .btn { padding: 9px 0; }
.app-content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.app-view { flex: 1; overflow-y: auto; }
.app-frame { width: 100%; height: 100%; border: none; flex: 1; }

/* ===== 主页分栏 + 日历 ===== */
.home-layout { display: grid; grid-template-columns: 340px 1fr; gap: 24px; align-items: start; }
.calendar {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 20px; position: sticky; top: 0;
}
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.cal-title { font-size: 0.98rem; font-weight: 700; color: var(--text); }
.cal-nav { display: flex; gap: 4px; }
.cal-nav .icon-btn { width: 28px; height: 28px; }
.cal-week { display: grid; grid-template-columns: repeat(7, 1fr); text-align: center; margin-bottom: 4px; }
.cal-week span { font-size: 0.72rem; color: var(--text-tertiary); padding: 4px 0; font-weight: 500; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.cal-day {
  position: relative; aspect-ratio: 1; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.82rem; color: var(--text-secondary);
  transition: background var(--transition);
}
.cal-day.other { color: var(--text-tertiary); }
.cal-day.has-event { cursor: pointer; color: var(--accent); font-weight: 600; }
.cal-day.has-event::after {
  content: ""; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
}
.cal-day.today { box-shadow: inset 0 0 0 1.5px var(--accent); }
.cal-day.active { background: var(--accent-soft); color: var(--accent); }
.cal-day.active.has-event::after { background: var(--accent); }
.home-right { display: flex; flex-direction: column; gap: 24px; min-width: 0; }

@media (max-width: 900px) {
  .home-layout { grid-template-columns: 1fr; }
  .calendar { position: static; }
}

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--border); padding: 24px; text-align: center; }
.footer p { font-size: 0.8rem; color: var(--text-tertiary); }

/* ===== 响应式 ===== */
@media (max-width: 640px) {
  .navbar-inner { padding: 0 16px; }
  .nav-link { padding: 0 10px; }
  .main { padding: 24px 16px 44px; }
  .detail-card { padding: 24px 20px; }
  .form-card { padding: 24px 20px; }
  .profile-card { padding: 24px 20px; }
  .list-row { padding: 14px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}