/* ============================================================
   采集机器人管理后台 — 现代深色侧边栏主题
   ============================================================ */

:root {
  --sidebar-bg: #0f172a;
  --sidebar-item: #94a3b8;
  --sidebar-active-bg: linear-gradient(135deg, #4f46e5, #7c3aed);
  --sidebar-hover-bg: rgba(255,255,255,.07);
  --sidebar-width: 220px;
  --topbar-h: 60px;
  --accent: #4f46e5;
  --accent2: #7c3aed;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-sub: #64748b;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.15);
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }

/* ── 自定义滚动条 ────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ── 顶部导航栏 ──────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--topbar-h);
  background: var(--sidebar-bg);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem 0 calc(var(--sidebar-width) + 1.5rem);
  border-bottom: 1px solid rgba(255,255,255,.06);
  backdrop-filter: blur(12px);
}
.nav-brand {
  font-size: 1rem; font-weight: 700; color: #fff; letter-spacing: .3px;
  background: linear-gradient(135deg, #818cf8, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-right { display: flex; align-items: center; gap: 1rem; }
.nav-right span { color: #94a3b8; font-size: .875rem; }

/* ── 布局容器 ────────────────────────────────────── */
.layout {
  display: flex;
  padding-top: var(--topbar-h);
  min-height: 100vh;
}

/* ── 侧边栏 ──────────────────────────────────────── */
.sidebar {
  position: fixed; top: var(--topbar-h); left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  overflow-y: auto; overflow-x: hidden;
  padding: 1.25rem 0;
  border-right: 1px solid rgba(255,255,255,.05);
}
.sidebar-section {
  font-size: .7rem; font-weight: 600; letter-spacing: .08em;
  color: #475569; text-transform: uppercase;
  padding: .75rem 1.25rem .35rem;
  margin-top: .5rem;
}
.menu-item {
  display: flex; align-items: center; gap: .65rem;
  padding: .6rem 1.25rem;
  color: var(--sidebar-item);
  font-size: .875rem; font-weight: 400;
  transition: all var(--transition);
  cursor: pointer; border-radius: 0;
  position: relative; overflow: hidden;
}
.menu-item .menu-icon { font-size: 1rem; min-width: 20px; text-align: center; opacity: .8; }
.menu-item:hover { color: #fff; background: var(--sidebar-hover-bg); }
.menu-item.active {
  color: #fff; font-weight: 500;
  background: linear-gradient(135deg, rgba(79,70,229,.3), rgba(124,58,237,.3));
  border-right: 3px solid #818cf8;
}
.menu-item.active .menu-icon { opacity: 1; }
.menu-item.active::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, #818cf8, #a78bfa);
}

/* ── 主内容区 ────────────────────────────────────── */
.content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 2rem 2rem 3rem;
  min-width: 0;
  overflow-x: auto;
}

/* ── 页面标题 ────────────────────────────────────── */
h2 {
  font-size: 1.375rem; font-weight: 700; color: var(--text);
  margin-bottom: 1.5rem;
  display: flex; align-items: center; gap: .5rem;
}
h2::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
  margin-left: .75rem;
}
h3 { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: .75rem; }
h4 { font-size: .9375rem; font-weight: 600; color: var(--text); margin-bottom: .75rem; }

/* ── 卡片 ────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: 1.25rem;
  transition: box-shadow var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }

/* ── 统计格 ──────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}
@media (max-width: 1024px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .stats-grid { grid-template-columns: 1fr; } }

.stat-card {
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative; overflow: hidden;
  color: #fff;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.stat-card:nth-child(1) { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.stat-card:nth-child(2) { background: linear-gradient(135deg, #0ea5e9, #0284c7); }
.stat-card:nth-child(3) { background: linear-gradient(135deg, #10b981, #059669); }
.stat-card:nth-child(4) { background: linear-gradient(135deg, #f59e0b, #d97706); }
.stat-card::after {
  content: '';
  position: absolute; right: -20px; bottom: -20px;
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
}
.stat-icon {
  font-size: 1.75rem; margin-bottom: .5rem; opacity: .9;
  position: relative; z-index: 1;
}
.stat-num {
  font-size: 2.25rem; font-weight: 800; line-height: 1;
  position: relative; z-index: 1;
}
.stat-label {
  font-size: .8rem; opacity: .85; margin-top: .4rem;
  font-weight: 500; letter-spacing: .02em;
  position: relative; z-index: 1;
}

/* ── 表单 ────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block; font-size: .875rem; font-weight: 500;
  color: var(--text); margin-bottom: .4rem;
}
.form-control {
  width: 100%;
  padding: .6rem .875rem;
  background: #f8fafc;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: .9rem; color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  font-family: inherit;
}
.form-control:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
.form-control::placeholder { color: #94a3b8; }
textarea.form-control { resize: vertical; min-height: 80px; font-family: "JetBrains Mono", "Fira Code", monospace; }
.form-row { display: flex; gap: 1rem; }
.form-group.half { flex: 1; }
.form-inline { display: flex; gap: .75rem; flex-wrap: wrap; align-items: flex-end; }
.text-muted { font-size: .8rem; color: var(--text-sub); margin-top: .3rem; display: block; }

/* ── 按钮 ────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .5rem 1.1rem;
  border-radius: 8px;
  border: none; cursor: pointer;
  font-size: .875rem; font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap; user-select: none;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: #fff;
  box-shadow: 0 2px 8px rgba(79,70,229,.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #4338ca, #6d28d9);
  box-shadow: 0 4px 14px rgba(79,70,229,.45);
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16,185,129,.3);
}
.btn-success:hover {
  background: linear-gradient(135deg, #059669, #047857);
  box-shadow: 0 4px 14px rgba(16,185,129,.4);
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #fff;
  box-shadow: 0 2px 8px rgba(239,68,68,.3);
}
.btn-danger:hover {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  box-shadow: 0 4px 14px rgba(239,68,68,.4);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-sub);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { background: var(--bg); color: var(--text); border-color: #94a3b8; }

.btn-sm { padding: .3rem .7rem; font-size: .8rem; border-radius: 6px; }
.btn-block { width: 100%; }

/* ── 表格 ────────────────────────────────────────── */
.table-wrap { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.table {
  width: 100%; border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.table th {
  background: #f8fafc;
  padding: .75rem 1rem;
  text-align: left;
  font-size: .8rem; font-weight: 600;
  color: var(--text-sub);
  letter-spacing: .04em; text-transform: uppercase;
  border-bottom: 1.5px solid var(--border);
}
.table td {
  padding: .75rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  font-size: .875rem;
  vertical-align: middle;
  color: var(--text);
}
.table tr:last-child td { border-bottom: none; }
.table tbody tr { transition: background var(--transition); }
.table tbody tr:hover td { background: #f8fafc; }
code {
  background: #f1f5f9;
  padding: .15rem .45rem;
  border-radius: 5px;
  font-size: .82rem;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  color: var(--accent);
  border: 1px solid #e2e8f0;
}

/* ── Badge ───────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .25rem .65rem;
  border-radius: 20px;
  font-size: .78rem; font-weight: 600;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-info    { background: #dbeafe; color: #1e40af; }
.badge-pending { background: #fef3c7; color: #92400e; }

/* ── 提示框 ───────────────────────────────────────── */
.alert {
  display: flex; align-items: flex-start; gap: .75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: .875rem;
  margin-bottom: 1.25rem;
  border: 1px solid;
  animation: slideDown .3s ease;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.alert-success {
  background: linear-gradient(135deg, #d1fae5, #a7f3d0);
  color: #065f46; border-color: #6ee7b7;
}
.alert-error {
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  color: #991b1b; border-color: #fca5a5;
}
.alert-info {
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  color: #1e40af; border-color: #93c5fd;
}
.alert-warning {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #92400e; border-color: #fcd34d;
}

/* ── 分割线 ───────────────────────────────────────── */
.divider {
  height: 1px; background: var(--border);
  margin: 1.5rem 0;
}

/* ── 登录页 ───────────────────────────────────────── */
.login-page {
  display: flex; justify-content: center; align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  position: relative; overflow: hidden;
}
.login-page::before {
  content: '';
  position: absolute; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(79,70,229,.3), transparent 70%);
  top: -100px; left: -100px; pointer-events: none;
}
.login-page::after {
  content: '';
  position: absolute; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,.25), transparent 70%);
  bottom: -100px; right: -100px; pointer-events: none;
}
.login-box {
  background: rgba(255,255,255,.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 20px;
  padding: 2.75rem 2.5rem;
  width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  position: relative; z-index: 1;
  animation: fadeUp .5s ease;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.login-box .login-logo {
  text-align: center; margin-bottom: 2rem;
}
.login-box .login-logo .logo-icon {
  font-size: 3rem; display: block; margin-bottom: .5rem;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}
.login-box h2 {
  text-align: center; margin-bottom: 1.75rem;
  font-size: 1.25rem; font-weight: 700;
  background: linear-gradient(135deg, #818cf8, #c4b5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.login-box h2::after { display: none; }
.login-box .form-control {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.15);
  color: #fff;
}
.login-box .form-control:focus {
  background: rgba(255,255,255,.12);
  border-color: #818cf8;
  box-shadow: 0 0 0 3px rgba(129,140,248,.2);
}
.login-box .form-control::placeholder { color: rgba(255,255,255,.4); }
.login-box .form-group label { color: rgba(255,255,255,.75); }
.login-box .text-muted { color: rgba(255,255,255,.4); }

/* ── 工具类 ───────────────────────────────────────── */
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-sub     { color: var(--text-sub); }
.fw-600 { font-weight: 600; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }

/* ── 空状态 ───────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 3rem 1rem; color: var(--text-sub);
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: .75rem; opacity: .4; }
.empty-state p { font-size: .9rem; }

/* ── 页面头部区域 ────────────────────────────────── */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.page-header h2 { margin-bottom: 0; }
.page-header h2::after { display: none; }

/* ── 状态指示点 ──────────────────────────────────── */
.dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; margin-right: .4rem;
}
.dot-success { background: var(--success); box-shadow: 0 0 0 2px rgba(16,185,129,.25); }
.dot-warning { background: var(--warning); box-shadow: 0 0 0 2px rgba(245,158,11,.25); }
.dot-danger  { background: var(--danger);  box-shadow: 0 0 0 2px rgba(239,68,68,.25); }

/* ── 表单提交区 ──────────────────────────────────── */
.form-actions {
  display: flex; align-items: center; gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  margin-top: 1.5rem;
}

/* ── 内联标签 ────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: .2rem .55rem;
  background: #ede9fe;
  color: var(--accent);
  border-radius: 5px;
  font-size: .78rem; font-weight: 600;
}

/* ── 响应式 ───────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .content { margin-left: 0; padding: 1.25rem; }
  .navbar { padding-left: 1.25rem; }
}