/* ============================================================
   网站监控系统 - 样式表 (v2 - 清新简洁)
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: #eff6ff;
  --success: #10b981;
  --success-light: #ecfdf5;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --info: #06b6d4;
  --info-light: #ecfeff;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.03);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--primary-hover); }

/* ============ Topbar ============ */
.topbar {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}
.brand a {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.brand a:hover { color: var(--primary); text-decoration: none; }

.nav { display: flex; align-items: center; gap: 0.5rem; }
.nav a { color: var(--text-muted); font-size: 0.9rem; padding: 0.35rem 0.75rem; border-radius: var(--radius-sm); transition: all 0.15s; }
.nav a:hover { color: var(--text); background: var(--bg-hover); text-decoration: none; }

.user-info {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg-hover);
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.user-info small { opacity: 0.7; }

/* ============ Container ============ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
  width: 100%;
}

h1 { font-size: 1.5rem; margin-bottom: 1.5rem; font-weight: 700; color: var(--text); }
h2 { font-size: 1.1rem; margin: 2rem 0 1rem; font-weight: 600; color: var(--text); }
h3 { font-size: 0.95rem; margin-bottom: 0.4rem; font-weight: 600; }

/* ============ Flash ============ */
.flash-area { max-width: 1100px; margin: 0 auto; padding: 1rem 2rem 0; }
.flash {
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  border: 1px solid transparent;
}
.flash-success { background: var(--success-light); border-color: rgba(16,185,129,0.2); color: #065f46; }
.flash-error   { background: var(--danger-light);  border-color: rgba(239,68,68,0.2);  color: #991b1b; }
.flash-warning { background: var(--warning-light); border-color: rgba(245,158,11,0.2); color: #92400e; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1.1rem;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.15s;
  text-decoration: none;
  line-height: 1.4;
}
.btn:hover { background: var(--bg-hover); border-color: #cbd5e1; text-decoration: none; color: var(--text); }

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

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

.btn-danger {
  background: var(--danger-light);
  color: var(--danger);
  border-color: rgba(239,68,68,0.2);
}
.btn-danger:hover { background: rgba(239,68,68,0.15); }

.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.78rem; }
.btn-lg { padding: 0.7rem 1.6rem; font-size: 0.95rem; }
.btn-block { display: flex; width: 100%; }

/* ============ Forms ============ */
.form { max-width: 680px; }
.form-large { max-width: 780px; }
.form-group { margin-bottom: 1.1rem; }
.form-row { display: flex; gap: 1rem; margin-bottom: 1rem; }
.form-row .form-group { flex: 1; margin-bottom: 0; }

.form label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.form input[type="text"],
.form input[type="email"],
.form input[type="password"],
.form input[type="url"],
.form input[type="number"],
.form select,
.form textarea {
  width: 100%;
  padding: 0.55rem 0.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  transition: all 0.15s;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.form textarea { resize: vertical; font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace; font-size: 0.82rem; }
.form small { color: var(--text-muted); font-size: 0.78rem; }

.form-actions { display: flex; gap: 0.8rem; margin-top: 1.5rem; }

/* ============ Auth ============ */
.auth-box {
  max-width: 400px;
  margin: 5rem auto;
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.auth-box h2 { text-align: center; margin-bottom: 1.5rem; font-size: 1.3rem; }
.auth-tip { text-align: center; margin-top: 1.5rem; color: var(--text-muted); font-size: 0.85rem; }

/* ============ Install ============ */
.install-box {
  max-width: 680px;
  margin: 3rem auto;
  padding: 2rem;
}
.install-box h1 { text-align: center; margin-bottom: 2rem; }
.setup-steps { margin: 1.5rem 0; padding-left: 1.2rem; }
.setup-steps li { margin-bottom: 1rem; line-height: 1.7; }
.setup-steps code {
  display: inline-block;
  background: var(--bg);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.82rem;
  margin-top: 0.3rem;
  word-break: break-all;
  border: 1px solid var(--border);
}

/* ============ Stats ============ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--bg-card);
  padding: 1.3rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.2s;
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.stat-num { font-size: 1.8rem; font-weight: 700; letter-spacing: -0.02em; }
.stat-label { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.25rem; }
.stat-up .stat-num { color: var(--success); }
.stat-down .stat-num { color: var(--danger); }
.stat-active .stat-num { color: var(--primary); }

/* ============ Task grid ============ */
.task-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.task-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all 0.2s;
}
.task-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.task-card.status-up { border-left: 3px solid var(--success); }
.task-card.status-down { border-left: 3px solid var(--danger); }
.task-card.status-unknown { border-left: 3px solid var(--text-muted); }

.task-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.6rem; }
.task-header h3 { font-size: 0.95rem; margin: 0; }

.task-url {
  font-size: 0.78rem;
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: 0.8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0.3rem 0;
}

.task-meta {
  display: flex;
  gap: 0.8rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  flex-wrap: wrap;
}

.task-actions { display: flex; gap: 0.4rem; margin-top: 1rem; padding-top: 0.8rem; border-top: 1px solid var(--border); }

/* ============ Badges ============ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.4;
}
.badge-success { background: var(--success-light); color: #065f46; }
.badge-danger  { background: var(--danger-light);  color: #991b1b; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-info    { background: var(--info-light);    color: #155e75; }

/* ============ Tables ============ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.data-table th, .data-table td {
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.data-table th {
  background: var(--bg);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--bg-hover); }
.url-cell { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============ Admin ============ */
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.2s;
}
.admin-card:hover {
  border-color: var(--primary);
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.admin-card h3 { margin-bottom: 0.4rem; font-size: 1rem; }
.admin-card p { color: var(--text-muted); font-size: 0.85rem; }
.card-warn { border-color: rgba(239,68,68,0.3); }
.card-warn:hover { border-color: var(--danger); }

/* ============ Channel grid ============ */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.channel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  transition: all 0.2s;
}
.channel-card:hover { box-shadow: var(--shadow-md); }
.channel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.4rem; }
.channel-type { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.4rem; }
.channel-meta { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 0.8rem; }
.channel-actions { display: flex; gap: 0.4rem; }

/* ============ Action bar ============ */
.action-bar { margin-bottom: 1.5rem; display: flex; gap: 0.6rem; flex-wrap: wrap; }

/* ============ Filter & search ============ */
.filter-bar { display: flex; gap: 0.6rem; margin-bottom: 1.5rem; align-items: center; flex-wrap: wrap; }
.filter-bar select { padding: 0.5rem 0.7rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-size: 0.85rem; }
.search-bar { display: flex; gap: 0.6rem; margin-bottom: 1.5rem; }
.search-bar input { flex: 1; padding: 0.55rem 1rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font-size: 0.9rem; }

/* ============ Tabs ============ */
.tabs { display: flex; gap: 0.3rem; margin-bottom: 2rem; border-bottom: 1px solid var(--border); }
.tab {
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab:hover { text-decoration: none; color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ============ Task detail ============ */
.task-detail {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.detail-info, .detail-channels {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.detail-info p { margin-bottom: 0.5rem; font-size: 0.88rem; }
.detail-channels ul { list-style: none; }
.detail-channels li { padding: 0.3rem 0; font-size: 0.88rem; }
.uptime-rate { font-size: 1.4rem; font-weight: 700; color: var(--success); }

/* ============ Channel checkboxes ============ */
.channel-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--text);
  transition: all 0.15s;
}
.checkbox-label:hover { border-color: var(--primary); background: var(--primary-light); }
.checkbox-label small { color: var(--text-muted); }
.checkbox-label input[type="checkbox"] { margin: 0; }

/* ============ Empty state ============ */
.empty-tip {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

/* ============ Footer ============ */
.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.78rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

/* ============ Text utilities ============ */
.text-muted { color: var(--text-muted); font-size: 0.88rem; }
.mt-1 { margin-top: 0.5rem; }
.actions { display: flex; gap: 0.3rem; white-space: nowrap; flex-wrap: wrap; }

/* ============ Landing page ============ */
body.landing {`n  background: #ffffff;
}
.landing .topbar {
  background: rgba(255,255,255,0.7);
  border-bottom-color: transparent;
}

.hero {
  text-align: center;
  padding: 6rem 2rem 5rem;
  max-width: 720px;
  margin: 0 auto;
  animation: fadeInUp 0.8s ease-out;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 1.2rem;
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.8;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-actions .btn { min-width: 160px; }
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}
.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #8b5cf6);
  opacity: 0;
  transition: opacity 0.3s;
}
.feature:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.feature:hover::before { opacity: 1; }
.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  background: var(--primary-light);
  border-radius: 50%;
}
.feature h3 { font-size: 1.05rem; margin-bottom: 0.5rem; font-weight: 600; }
.feature p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }
.landing .footer { border-top-color: transparent; background: transparent; }

/* ============ How it works ============ */
.how-it-works {
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem 2rem;
  text-align: center;
}
.how-it-works h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 3rem;
  color: var(--text);
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}
.step {
  text-align: center;
  padding: 1.5rem;
}
.step-num {
  width: 50px;
  height: 50px;
  line-height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: white;
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 auto 1rem;
  box-shadow: 0 4px 15px rgba(59,130,246,0.3);
}
.step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.step p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
/* ============ Responsive ============ */
@media (max-width: 768px) {
  .topbar { padding: 0.7rem 1rem; flex-direction: column; gap: 0.5rem; }
  .nav { flex-wrap: wrap; gap: 0.3rem; justify-content: center; }
  .container { padding: 1rem; }
  .form-row { flex-direction: column; gap: 0; }
  .form-row .form-group { margin-bottom: 1rem; }
  .task-detail { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 2rem; }
  .hero { padding: 3rem 1rem; }
  .features { grid-template-columns: 1fr; padding: 1rem; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .how-it-works { padding: 2rem 1rem; }
}


/* 检测模式切换 */
.hidden { display: none !important; }