@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --primary-glow: rgba(99, 102, 241, 0.28);
  --primary-soft: #eef2ff;
  
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-translucent: rgba(255, 255, 255, 0.85);
  
  --sidebar-bg: #ffffff;
  --sidebar-border: #f1f5f9;
  --sidebar-text: #64748b;
  --sidebar-active-bg: #f5f3ff;
  --sidebar-active-text: #6366f1;
  
  --text-main: #0f172a;
  --text-sub: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 8px 24px -4px var(--primary-glow);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg-page);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.05) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(168, 85, 247, 0.05) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(56, 189, 248, 0.03) 0px, transparent 50%);
  color: var(--text-main);
  display: flex;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 侧边导航栏 (Sleek Clean White) */
.sidebar {
  width: 260px;
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 20;
}

.sidebar-header {
  padding: 22px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-text {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.sidebar-nav {
  list-style: none;
  padding: 16px 14px;
  flex: 1;
  overflow-y: auto;
}

.nav-section-title {
  padding: 16px 12px 6px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-light);
  letter-spacing: 0.08em;
}

.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  margin-bottom: 3px;
}

.sidebar-nav li a:hover {
  background-color: #f8fafc;
  color: var(--text-main);
  transform: translateX(2px);
}

.sidebar-nav li.active a {
  background-color: var(--sidebar-active-bg);
  color: var(--sidebar-active-text);
  font-weight: 600;
}

.sidebar-nav li.active a svg {
  stroke: var(--primary);
}

.sidebar-footer {
  padding: 18px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  background: #fafafa;
}

/* 主工作区 */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: transparent;
}

.top-navbar {
  height: 64px;
  background-color: var(--bg-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 32px;
  z-index: 10;
}

.top-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 炫彩与胶囊徽章 (Badges & Pills) */
.pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-sub);
  box-shadow: var(--shadow-sm);
}

.pill-tag-spark {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(168, 85, 247, 0.08) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
}
.badge-admin { background-color: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }
.badge-user { background-color: #e0e7ff; color: #4338ca; border: 1px solid #c7d2fe; }
.badge-success { background-color: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.badge-danger { background-color: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

.content-body {
  flex: 1;
  padding: 30px 36px;
  overflow-y: auto;
}

/* 高端现代卡片 (White Glassmorphic Cards) */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.card-hero {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 28px;
  box-shadow: 0 12px 36px -8px rgba(99, 102, 241, 0.12);
  overflow: hidden;
}

.card-hero::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, rgba(99, 102, 241, 0.05) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.card-title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

/* 网格与指标卡片 */
.grid-cols-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.stat-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}
.stat-value.red { color: var(--danger); }
.stat-value.green { color: var(--success); }

/* 表单与输入控件 */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 8px; color: var(--text-sub); }
.form-control, .form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  outline: none;
  background-color: #ffffff;
  color: var(--text-main);
  transition: all 0.2s ease;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* 现代按钮 (Sleek SaaS Buttons with Ambient Glow) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}
.btn-success:hover {
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: #ffffff;
  border-color: var(--border-color);
  color: var(--text-sub);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #cbd5e1;
  color: var(--text-main);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}
.btn-danger:hover {
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.4);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: 6px;
}

.btn-pill {
  border-radius: var(--radius-pill);
  padding: 10px 24px;
}

/* 现代表格 (Clean White Tables) */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #ffffff;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}
.table th {
  background-color: #f8fafc;
  padding: 12px 18px;
  font-weight: 600;
  color: var(--text-sub);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-main);
}
.table tr:last-child td {
  border-bottom: none;
}
.table tr:hover td {
  background-color: #f8fafc;
}

/* 选项卡 (Tabs) */
.tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 22px;
  gap: 8px;
}
.tab-btn {
  padding: 12px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.tab-btn:hover {
  color: var(--text-main);
}
.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* 现代终端与日志 (Terminal) */
.console-box {
  background-color: #0f172a;
  color: #38bdf8;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85rem;
  padding: 18px;
  border-radius: var(--radius-md);
  height: 200px;
  overflow-y: auto;
  line-height: 1.6;
  white-space: pre-wrap;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* 模态框 (Modal) */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal-backdrop.show { display: flex; }
.modal-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 520px;
  padding: 28px;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text-light);
  line-height: 1;
}
.modal-close:hover {
  color: var(--text-main);
}