/* Web Analytics Dashboard — 天蓝浅色主题 */

:root {
    --primary: #38bdf8;
    --primary-dark: #0ea5e9;
    --primary-light: #e0f2fe;
    --primary-bg: #f0f9ff;
    --danger: #f87171;
    --danger-light: #fef2f2;
    --success: #4ade80;
    --success-light: #f0fdf4;
    --warning: #fbbf24;
    --warning-light: #fffbeb;
    --bg: #f8fafc;
    --sidebar-bg: #ffffff;
    --sidebar-text: #64748b;
    --sidebar-active: #38bdf8;
    --sidebar-hover: #f0f9ff;
    --sidebar-border: #e2e8f0;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #94a3b8;
    --text-muted: #cbd5e1;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --gradient: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 50%, #0284c7 100%);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}

/* ===== Login Page ===== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 30%, #7dd3fc 60%, #38bdf8 100%);
}

.login-box {
    background: white;
    padding: 44px 40px;
    border-radius: 16px;
    width: 400px;
    box-shadow: 0 20px 60px rgba(14,165,233,0.15);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 6px;
    font-size: 24px;
    color: var(--primary-dark);
}

.login-box p {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 28px;
}

/* ===== App Layout ===== */
.app {
    display: flex;
    min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
    width: 224px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
    border-right: 1px solid var(--sidebar-border);
    box-shadow: 1px 0 8px rgba(0,0,0,0.03);
}

.sidebar-header {
    padding: 22px 20px 18px;
    border-bottom: 1px solid var(--sidebar-border);
}

.sidebar-header h2 {
    font-size: 18px;
    color: var(--primary-dark);
    letter-spacing: -0.3px;
}

.site-selector {
    padding: 14px 16px;
}

.site-selector select {
    width: 100%;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
}

.site-selector select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(56,189,248,0.1);
}

.nav-menu {
    list-style: none;
    padding: 6px 10px;
    flex: 1;
}

.nav-menu li {
    margin-bottom: 2px;
}

.nav-menu li a {
    display: block;
    padding: 10px 14px;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: all 0.15s;
    font-size: 14px;
    border-radius: 8px;
}

.nav-menu li a:hover {
    background: var(--sidebar-hover);
    color: var(--primary-dark);
}

.nav-menu li.active a {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--primary);
    border-radius: 0 8px 8px 0;
}

.sidebar-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--sidebar-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-light);
}

.sidebar-footer .logout {
    color: var(--danger);
    text-decoration: none;
    font-weight: 500;
}

.sidebar-footer .logout:hover {
    text-decoration: underline;
}

/* ===== Content ===== */
.content {
    flex: 1;
    margin-left: 224px;
    padding: 28px 32px;
    min-height: 100vh;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.content-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
}

.date-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.date-range input[type="date"] {
    padding: 7px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text);
    background: white;
}

.date-range input[type="date"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(56,189,248,0.1);
}

.date-range span {
    color: var(--text-muted);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: white;
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s;
}

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

.btn-primary {
    background: var(--gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(14,165,233,0.25);
}

.btn-primary:hover {
    box-shadow: 0 4px 14px rgba(14,165,233,0.35);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border-color: transparent;
}

.btn-danger:hover {
    background: #ef4444;
    box-shadow: 0 2px 8px rgba(248,113,113,0.3);
}

.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: 6px; }
.btn-xs { padding: 3px 10px; font-size: 11px; border-radius: 6px; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== Stats Cards ===== */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.2s;
    border: 1px solid var(--border-light);
}

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

.stat-card.highlight {
    border-left: 4px solid var(--primary);
    background: var(--primary-bg);
}

.stat-icon { font-size: 28px; }
.stat-value { font-size: 24px; font-weight: 700; color: var(--text); }
.stat-label { font-size: 12px; color: var(--text-light); margin-top: 2px; font-weight: 500; }
.stat-change { font-size: 12px; margin-top: 4px; font-weight: 600; }
.stat-change.up { color: #16a34a; }
.stat-change.down { color: var(--danger); }

/* ===== Charts ===== */
.chart-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.chart-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
}

.chart-box h3 {
    font-size: 15px;
    margin-bottom: 16px;
    color: var(--text);
    font-weight: 600;
}

.chart-box.large {
    grid-column: 1 / -1;
}

/* ===== Tables ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.data-table th {
    background: var(--primary-bg);
    font-weight: 600;
    font-size: 12px;
    color: var(--primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.data-table tbody tr {
    transition: background 0.1s;
}

.data-table tbody tr:hover {
    background: var(--primary-bg);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.url-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.empty {
    text-align: center;
    color: var(--text-light);
    padding: 40px !important;
}

.table-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.table-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
}

.table-box h3 {
    font-size: 15px;
    margin-bottom: 12px;
    font-weight: 600;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.15s;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(56,189,248,0.12);
}

.form-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    margin-bottom: 20px;
}

.form-card h3 {
    margin-bottom: 16px;
}

.form-row {
    display: flex;
    gap: 16px;
    align-items: flex-end;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

/* ===== Alerts ===== */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 13px;
    font-weight: 500;
}

.alert-success {
    background: var(--success-light);
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.alert-error {
    background: var(--danger-light);
    color: #dc2626;
    border: 1px solid #fecaca;
}

/* ===== Realtime ===== */
.realtime-header {
    display: flex;
    gap: 32px;
    align-items: center;
    margin-bottom: 24px;
    padding: 22px 24px;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
}

.rt-stat {
    text-align: center;
}

.rt-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-dark);
    display: block;
}

.rt-number.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.rt-label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.rt-info {
    font-size: 12px;
    color: var(--text-light);
}

/* ===== Badge ===== */
.badge {
    display: inline-block;
    padding: 2px 10px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}

/* ===== Settings ===== */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.settings-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
}

.settings-section h3 {
    margin-bottom: 16px;
    font-size: 16px;
}

/* ===== Info Box ===== */
.info-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    margin-top: 20px;
}

.info-box h3 { margin-bottom: 12px; }
.info-box h4 { margin-top: 16px; margin-bottom: 8px; color: var(--primary-dark); }
.info-box p { margin-bottom: 8px; color: var(--text); }
.info-box ul { margin-left: 20px; margin-bottom: 12px; }
.info-box pre {
    background: var(--primary-bg);
    padding: 14px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 13px;
    margin: 8px 0;
    border: 1px solid var(--primary-light);
}

.info-box code {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

.track-code {
    display: inline-block;
    max-width: 350px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
    background: var(--primary-bg);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    color: var(--primary-dark);
    border: 1px solid var(--primary-light);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .content { margin-left: 0; padding: 16px; }
    .chart-row, .table-row, .settings-grid { grid-template-columns: 1fr; }
    .stats-cards { grid-template-columns: repeat(2, 1fr); }
    .content-header { flex-direction: column; align-items: flex-start; }
    .date-range { flex-wrap: wrap; }
    .form-row { flex-direction: column; }
}