/*
 * Apple HIG 参数化设计规范
 * 员工内容分析档案管理系统
 * 规范来源: DESIGN.md — 所有数值严格遵循，禁止自由发挥
 */

/* ── 设计 Token（精确数值）── */
:root {
  /* 色彩系统 — 浅色模式 */
  --color-bg:           #FFFFFF;
  --color-surface:      #FFFFFF;
  --color-sidebar:      #F2F2F7;
  --color-sidebar-hover: rgba(0,0,0,0.04);
  --color-text:         #111111;
  --color-text-secondary: #666666;
  --color-text-tertiary:  #8E8E93;
  --color-accent:       #0071E3;
  --color-accent-hover: #0077ED;
  --color-success:      #30D158;
  --color-warning:      #FF9F0A;
  --color-danger:       #FF453A;
  --color-border:       #E5E5EA;
  --color-border-light: rgba(0,0,0,0.06);

  /* 组件参数 */
  --radius-card:   12px;
  --radius-input:  8px;
  --radius-btn:    24px;

  /* 阴影 — 仅允许 2 种，禁止多层叠加 */
  --shadow-base:   0 4px 12px rgba(0,0,0,0.08);
  --shadow-hover:  0 8px 24px rgba(0,0,0,0.12);

  /* 间距 — 严格 8px 倍数 */
  --spacing-xs:  8px;
  --spacing-sm:  16px;
  --spacing-md:  24px;
  --spacing-lg:  32px;
  --spacing-xl:  48px;

  /* 布局 */
  --sidebar-width: 256px;
  --content-max:   1200px;
  --line-height:   1.6;
  --sidebar-toggle-w: 32px;

  /* 字体栈 — 强制声明，含中文备选 */
  --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-mono:   "SF Mono", "JetBrains Mono", "Fira Code", monospace;

  /* 动效 — ≤ 0.3s，单一属性 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
}

/* ── Reset —— */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--font-system);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  min-height: 100vh;
  font-size: 14px; /* 中文正文最小 14px */
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-accent-hover); }

code, pre { font-family: var(--font-mono); font-size: 0.875em; }
code {
  background: rgba(0,0,0,0.04);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-danger);
}

/* ── Typography —— */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: var(--line-height);
}

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

/* ── macOS Sidebar —— */
.app-sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  border-right: 0.5px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  transition: width 0.25s ease;
}

.sidebar-header {
  padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
  border-bottom: 0.5px solid var(--color-border);
}

.sidebar-header .logo-icon {
  font-size: 24px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.sidebar-header .app-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}
.sidebar-header .app-subtitle {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-xs);
  display: flex;
  flex-direction: column;
}

.sidebar-section {
  padding: var(--spacing-sm) var(--spacing-xs) var(--spacing-xs);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
}

.sidebar-nav-divider {
  height: 1px;
  background: var(--color-border);
  margin: 6px 12px;
  opacity: 0.4;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-input);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 450;
  transition: background var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.nav-item:hover { background: var(--color-sidebar-hover); color: var(--color-text); }
.nav-item.active {
  background: rgba(0,113,227,0.10);
  color: var(--color-accent);
  font-weight: 550;
}
.nav-item i { width: 20px; text-align: center; font-size: 15px; }
.nav-item .nav-badge {
  margin-left: auto;
  font-size: 11px;
  background: rgba(0,0,0,0.06);
  padding: 2px var(--spacing-xs);
  border-radius: 10px;
  color: var(--color-text-secondary);
}

.sidebar-logout-mobile {
  margin-top: 4px;
  border-top: 0.5px solid var(--color-border);
  padding-top: 10px;
  color: var(--color-text-secondary);
  font-size: 13px;
}
.sidebar-logout-mobile:hover {
  background: rgba(255,69,58,0.08);
  color: var(--color-danger);
}

.sidebar-footer {
  padding: var(--spacing-sm);
  border-top: 0.5px solid var(--color-border);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  border-radius: var(--radius-input);
  transition: background var(--transition-fast);
}
.sidebar-user:hover { background: var(--color-sidebar-hover); }
.sidebar-user .user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
}
.sidebar-user .user-name { font-size: 13px; font-weight: 500; color: var(--color-text); }
.sidebar-user .user-role { font-size: 11px; color: var(--color-text-tertiary); }

.sidebar-logout {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  margin-top: var(--spacing-xs);
  border-radius: var(--radius-input);
  color: var(--color-text-secondary);
  font-size: 13px;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.sidebar-logout:hover { background: rgba(255,69,58,0.08); color: var(--color-danger); }

/* ── 侧栏折叠/展开按钮 ── */
.sidebar-toggle-btn {
  position: fixed;
  left: var(--sidebar-width);
  top: 0;
  width: var(--sidebar-toggle-w);
  height: 40px;
  background: var(--color-sidebar);
  border: none;
  border-right: 0.5px solid var(--color-border);
  border-bottom: 0.5px solid var(--color-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 101;
  color: var(--color-text-secondary);
  transition: left 0.25s ease, background 0.15s;
  padding: 0;
}
.sidebar-toggle-btn:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-accent);
}
.sidebar-toggle-btn svg {
  transition: transform 0.25s ease;
}

/* 侧栏折叠状态 */
.sidebar-collapsed .app-sidebar {
  width: 0;
  overflow: hidden;
  border-right: none;
}
.sidebar-collapsed .sidebar-toggle-btn {
  left: 0;
  border-radius: 0 6px 6px 0;
  background: #fff;
  box-shadow: 3px 0 8px rgba(0,0,0,0.06);
}
.sidebar-collapsed .sidebar-toggle-btn svg {
  transform: rotate(180deg);
}
.sidebar-collapsed .app-main {
  margin-left: 0;
}

/* ── Main Content —— */
.app-main {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  max-width: var(--content-max);
  margin-right: auto;
  padding: var(--spacing-lg) var(--spacing-xl) 64px;
  transition: margin-left 0.25s ease;
}

.page-header {
  margin-bottom: var(--spacing-md);
}
.page-header h3, .page-header h4 {
  font-size: 22px;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.breadcrumb {
  background: none;
  padding: 0;
  margin-bottom: var(--spacing-xs);
  font-size: 13px;
}
.breadcrumb-item a { color: var(--color-accent); }
.breadcrumb-item.active { color: var(--color-text-tertiary); }
.breadcrumb-item + .breadcrumb-item::before { color: var(--color-text-tertiary); }

/* ── Cards —— */
.card {
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-base);
  transition: box-shadow var(--transition-base);
  overflow: hidden;
}
.card-header {
  background: transparent;
  border-bottom: 0.5px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-sm);
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text);
}
.card-body { padding: var(--spacing-sm); }

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

/* Stat Cards */
.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-base);
  transition: box-shadow var(--transition-base);
}
.stat-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.stat-card .stat-icon { font-size: 24px; margin-bottom: var(--spacing-xs); }
.stat-card .stat-value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.stat-card .stat-label { font-size: 13px; color: var(--color-text-secondary); }

.stat-accent-blue  .stat-icon, .stat-accent-blue  .stat-value { color: var(--color-accent); }
.stat-accent-green .stat-icon, .stat-accent-green .stat-value { color: var(--color-success); }
.stat-accent-purple .stat-icon, .stat-accent-purple .stat-value { color: #5E5CE6; }
.stat-accent-orange .stat-icon, .stat-accent-orange .stat-value { color: var(--color-warning); }
.stat-accent-cyan .stat-icon, .stat-accent-cyan .stat-value { color: #00B4D8; }

/* Quick Links */
.quick-link {
  display: block;
  padding: var(--spacing-md) var(--spacing-sm);
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-base);
  text-align: center;
  color: var(--color-text);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.quick-link:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  color: var(--color-text);
}
.quick-link i { font-size: 28px; margin-bottom: var(--spacing-xs); display: block; }
.quick-link .ql-title { font-size: 14px; font-weight: 600; }
.quick-link .ql-sub { font-size: 12px; color: var(--color-text-secondary); }

/* ── Buttons —— */
.btn {
  font-family: var(--font-system);
  font-weight: 500;
  font-size: 14px;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-btn);
  border: none;
  transition: background var(--transition-fast);
}

.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-hover); color: #fff; }

.btn-success { background: var(--color-success); color: #fff; }
.btn-success:hover { background: #28C44F; color: #fff; }

.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #E03A30; color: #fff; }

.btn-warning { background: var(--color-warning); color: #111; }
.btn-warning:hover { background: #E69100; color: #111; }

.btn-outline-primary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn-outline-primary:hover { background: var(--color-accent); color: #fff; }

.btn-outline-secondary {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.btn-outline-secondary:hover { background: rgba(0,0,0,0.04); color: var(--color-text); }

.btn-outline-success {
  background: transparent;
  color: var(--color-success);
  border: 1px solid var(--color-success);
}
.btn-outline-success:hover { background: var(--color-success); color: #fff; }

.btn-outline-danger {
  background: transparent;
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
}
.btn-outline-danger:hover { background: var(--color-danger); color: #fff; }

.btn-outline-info, .btn-outline-warning {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-outline-info:hover { background: rgba(94,92,230,0.10); color: #5E5CE6; border-color: #5E5CE6; }
.btn-outline-warning:hover { background: rgba(255,159,10,0.10); color: var(--color-warning); border-color: var(--color-warning); }

.btn-sm { font-size: 12px; padding: 4px var(--spacing-sm); border-radius: var(--radius-btn); }
.btn-lg { font-size: 16px; padding: var(--spacing-sm) var(--spacing-lg); border-radius: var(--radius-btn); }

/* ── Forms —— */
.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}
.form-control, .form-select {
  font-family: var(--font-system);
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  background: var(--color-bg);
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  color: var(--color-text);
}
.form-control:focus, .form-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
  outline: none;
}
.form-control::placeholder { color: var(--color-text-tertiary); }
textarea.form-control { border-radius: var(--radius-input); }

/* ── Tables —— */
.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
}
.table th {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-sm);
  border-bottom: 0.5px solid var(--color-border);
  background: none;
  text-align: left;
}
.table td {
  padding: var(--spacing-sm) var(--spacing-sm);
  border-bottom: 0.5px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}
.table tbody tr { transition: background var(--transition-fast); }
.table tbody tr:hover { background: rgba(0,113,227,0.03); }
.table-hover tbody tr:hover { background: rgba(0,113,227,0.03); }
.table-light { display: none; }

.table-responsive {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-base);
  overflow: hidden;
}

/* ── Badges —— */
.badge {
  font-family: var(--font-system);
  font-weight: 500;
  font-size: 11px;
  padding: 2px var(--spacing-xs);
  border-radius: 10px;
  letter-spacing: 0.01em;
}
.bg-primary   { background: var(--color-accent) !important; }
.bg-success   { background: var(--color-success) !important; }
.bg-danger    { background: var(--color-danger) !important; }
.bg-warning   { background: var(--color-warning) !important; color: #111 !important; }
.bg-info      { background: #5E5CE6 !important; }
.bg-secondary { background: rgba(0,0,0,0.06) !important; color: var(--color-text-secondary) !important; }

.text-primary { color: var(--color-accent) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger  { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-info    { color: #5E5CE6 !important; }

.border-primary { border-color: var(--color-accent) !important; }
.border-success { border-color: var(--color-success) !important; }
.border-info    { border-color: #5E5CE6 !important; }
.border-warning { border-color: var(--color-warning) !important; }
.border-danger  { border-color: var(--color-danger) !important; }

/* ── Alerts —— */
.alert {
  border: none;
  border-radius: var(--radius-card);
  padding: var(--spacing-sm) var(--spacing-sm);
  font-size: 14px;
  background: var(--color-surface);
  box-shadow: var(--shadow-base);
}
.alert-success { border-left: 3px solid var(--color-success); }
.alert-danger  { border-left: 3px solid var(--color-danger); }
.alert-warning { border-left: 3px solid var(--color-warning); }
.alert-info    { border-left: 3px solid #5E5CE6; }

/* ── Progress —— */
.progress { background: rgba(0,0,0,0.04); border-radius: 4px; height: 6px; }
.progress-bar { border-radius: 4px; }

/* ── Modals —— */
.modal-content {
  border: none;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
}
.modal-header {
  border-bottom: 0.5px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
}
.modal-title { font-weight: 600; font-size: 16px; }
.modal-body { padding: var(--spacing-md); }
.modal-footer {
  border-top: 0.5px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
}
.btn-close { opacity: 0.4; }
.btn-close:hover { opacity: 0.7; }

/* ── Dropdowns —— */
.dropdown-menu {
  border: none;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  padding: var(--spacing-xs);
  background: rgba(255,255,255,0.96);
}
.dropdown-item {
  border-radius: 5px;
  padding: 6px var(--spacing-sm);
  font-size: 13px;
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.dropdown-item:hover { background: rgba(0,0,0,0.04); color: var(--color-text); }
.dropdown-divider { border-color: var(--color-border); margin: 4px 0; }

/* ── Login Page — 纯白背景，禁止渐变 ── */
.apple-login-page {
  background: var(--color-sidebar);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* 登录页背景视频 */
#login-bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

/* 视频上方半透明遮罩，确保登录框可读 */
.login-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1;
}
.login-container { width: 380px; max-width: 94vw; }
.login-logo { text-align: center; margin-bottom: var(--spacing-lg); }
.login-logo .login-icon { font-size: 48px; color: #fff; margin-bottom: var(--spacing-sm); display: block; }
.login-logo h2 { font-size: 20px; font-weight: 600; color: #fff; margin: 0 0 4px; }
.login-logo p { font-size: 14px; color: rgba(255,255,255,0.7); margin: 0; }

.login-card {
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  padding: var(--spacing-lg) var(--spacing-lg);
}
.login-card .form-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-tertiary);
}
.login-card .form-control {
  background: rgba(0,0,0,0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 16px;
}
.login-card .form-control:focus {
  background: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.08);
}
.login-btn {
  width: 100%;
  padding: var(--spacing-sm);
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

/* ── 毛玻璃效果（精确参数）── */
.glass-card {
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-card);
}

/* ── Footer —— */
.app-footer {
  text-align: center;
  padding: var(--spacing-lg) 0;
  color: var(--color-text-tertiary);
  font-size: 12px;
  border-top: 0.5px solid var(--color-border);
  margin-top: var(--spacing-xl);
}

/* ── Exam Page —— */
#cheat-warning { position: sticky; top: var(--spacing-sm); z-index: 1050; }
.pulse { animation: pulse 0.5s infinite alternate; }
@keyframes pulse { from { opacity: 1; } to { opacity: 0.5; } }

/* ── Quill Editor —— */
.ql-toolbar {
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-input) var(--radius-input) 0 0 !important;
  background: rgba(0,0,0,0.02);
}
.ql-container {
  border: 1px solid var(--color-border) !important;
  border-top: none !important;
  border-radius: 0 0 var(--radius-input) var(--radius-input) !important;
  font-family: var(--font-system);
  font-size: 14px;
}
.ql-editor { min-height: 200px; }

/* ── Responsive —— */
@media (max-width: 768px) {
  .app-sidebar {
    width: 100%;
    height: auto;
    position: relative;
    flex-direction: row;
    overflow-x: auto;
    border-right: none;
    border-bottom: 0.5px solid var(--color-border);
    padding: var(--spacing-xs);
  }
  .app-sidebar .sidebar-header,
  .app-sidebar .sidebar-footer,
  .app-sidebar .sidebar-section,
  .app-sidebar .sidebar-nav-divider { display: none; }
  .app-sidebar .sidebar-nav { flex-direction: row; padding: 0; }
  .nav-item { width: auto; padding: var(--spacing-xs); font-size: 13px; white-space: nowrap; }
  .app-main { margin-left: 0; padding: var(--spacing-sm); max-width: 100%; }
  .login-container { padding: var(--spacing-sm); }
  .sidebar-toggle-btn { display: none; }
  .sidebar-collapsed .sidebar-toggle-btn { display: none; }
  .sidebar-collapsed .app-sidebar {
    width: 100%;
    overflow-x: auto;
    border-right: none;
  }
}