/* =========================================================
   埋点数据分析平台 - 样式表
   ========================================================= */

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #eef2ff;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #6366f1;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* =========================================================
   Layout
   ========================================================= */

.app-container {
    display: flex;
    min-height: 100vh;
}

/* =========================================================
   Sidebar
   ========================================================= */

.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.5px;
}

.nav-list {
    list-style: none;
    padding: 12px 12px;
    flex: 1;
}

.nav-item {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.nav-link.active {
    background: var(--sidebar-active);
    color: #fff;
}

.nav-item-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    margin: 8px 14px;
}

.nav-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.user-name {
    font-size: 0.85rem;
    color: #fff;
}

.logout-btn {
    display: block;
    text-align: center;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--sidebar-text);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
    width: 100%;
    transition: var(--transition);
}

.logout-form {
    margin: 0;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* =========================================================
   Main Content
   ========================================================= */

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 32px 40px;
    max-width: 1400px;
}

/* =========================================================
   Page Header
   ========================================================= */

.page-header {
    margin-bottom: 32px;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.page-subtitle {
    color: var(--text-secondary);
    margin-top: 4px;
    font-size: 0.95rem;
}

.version-badge {
    display: inline-block;
    padding: 1px 8px;
    margin-left: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    color: #fff;
    background: var(--primary);
    border-radius: 10px;
    vertical-align: middle;
}
/* =========================================================
   Stats Cards
   ========================================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stats-grid-total {
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

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

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
    line-height: 1.2;
}

.stat-value-lg {
    font-size: 2rem;
}

.stat-footer {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.stat-card-today {
    border-top: 3px solid var(--primary);
}

/* =========================================================
   Charts Grid
   ========================================================= */

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 32px;
}

.chart-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.chart-card h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* =========================================================
   Data Table
   ========================================================= */

.table-wrapper {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--border-light);
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 12px 16px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
}

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

.data-table .empty {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 16px;
}

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

.mono {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.badge {
    display: inline-block;
    padding: 2px 10px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.event-tag {
    display: inline-block;
    padding: 3px 12px;
    background: #dbeafe;
    color: #1d4ed8;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.event-data {
    font-size: 0.8rem;
    color: var(--text-secondary);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

/* =========================================================
   Recent Section
   ========================================================= */

.recent-section {
    margin-top: 32px;
}

.recent-section h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

/* =========================================================
   Empty State
   ========================================================= */

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 0.95rem;
}

/* =========================================================
   Login
   ========================================================= */

.login-page {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 背景装饰形状 */
.login-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: #667eea;
    top: -200px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: #764ba2;
    bottom: -150px;
    left: -100px;
    animation: float 25s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: #f093fb;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float 15s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.login-container {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 10;
    padding: 40px;
}

.login-brand {
    text-align: right;
    max-width: 320px;
    position: relative;
    z-index: 10;
}

.brand-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    line-height: 1;
}

.brand-title {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -1px;
    line-height: 1.3;
    margin-bottom: 12px;
}

.brand-desc {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    width: 400px;
    max-width: 100%;
    position: relative;
    z-index: 10;
    box-shadow:
        0 25px 50px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.1);
}

.login-header {
    margin-bottom: 28px;
}

.login-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.login-form .form-group {
    margin-bottom: 24px;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    letter-spacing: 0.3px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    font-size: 1.1rem;
    z-index: 1;
    line-height: 1;
}

.login-form .form-input {
    width: 100%;
    padding: 12px 14px 12px 44px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.25s ease;
    background: var(--bg-body);
    color: var(--text-primary);
    outline: none;
}

.login-form .form-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
    background: #fff;
}

.login-form .form-input::placeholder {
    color: var(--text-muted);
}

/* 登录按钮 */
.btn-login {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 13px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-login::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 12px;
}

.btn-login:hover::before {
    opacity: 1;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login span,
.btn-login .btn-arrow {
    position: relative;
    z-index: 1;
}

.btn-arrow {
    transition: transform 0.3s ease;
}

.btn-login:hover .btn-arrow {
    transform: translateX(4px);
}

/* 错误提示 */
.alert {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-icon {
    flex-shrink: 0;
    font-size: 1rem;
}

/* 响应式 */
@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
        gap: 32px;
        padding: 24px;
        text-align: center;
    }

    .login-brand {
        text-align: center;
    }

    .brand-title {
        font-size: 1.5rem;
    }

    .login-card {
        padding: 32px 24px;
    }
}

/* 登录/注册切换 */
.auth-switch {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.auth-switch p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.auth-switch a:hover {
    color: #764ba2;
    text-decoration: underline;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-body);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* =========================================================
   Buttons
   ========================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-full {
    width: 100%;
}

/* =========================================================
   Alert
   ========================================================= */

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }
    .main-content {
        margin-left: 200px;
        padding: 24px;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
}