/* ===================================
   Analytics Dashboard - CSS
   =================================== */

/* ===================================
   CSS VARIABLES
   =================================== */
:root {
    /* Colors */
    --primary-purple: #667eea;
    --primary-dark: #764ba2;
    --accent-blue: #4299e1;
    --accent-green: #48bb78;
    --accent-orange: #ed8936;
    --accent-red: #f56565;

    /* Neutrals */
    --bg-primary: #f7fafc;
    --bg-secondary: #ffffff;
    --bg-dark: #1a202c;
    --bg-darker: #171923;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-light: #a0aec0;
    --border-color: #e2e8f0;

    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 80px;

    /* Spacing */
    --header-height: 70px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Transitions */
    --transition: 0.3s ease;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* ===================================
   RESET & BASE
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
}

/* ===================================
   SIDEBAR
   =================================== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-darker);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transition: var(--transition);
    z-index: 1000;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    white-space: nowrap;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

.sidebar-toggle svg {
    width: 20px;
    height: 20px;
    color: white;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-lg) 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem var(--spacing-lg);
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    cursor: pointer;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.nav-item.active {
    background: linear-gradient(90deg, var(--primary-purple), var(--primary-dark));
    color: white;
}

.nav-item svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.sidebar.collapsed .nav-item span {
    display: none;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-avatar svg {
    width: 24px;
    height: 24px;
    color: white;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
}

.sidebar.collapsed .user-info {
    display: none;
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed~.main-content {
    margin-left: var(--sidebar-collapsed);
}

/* ===================================
   HEADER
   =================================== */
.header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    background: var(--bg-primary);
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 300px;
}

.search-box svg {
    width: 20px;
    height: 20px;
    color: var(--text-light);
}

.search-box input {
    flex: 1;
    border: none;
    background: none;
    outline: none;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.header-icon-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.header-icon-btn:hover {
    background: var(--border-color);
}

.header-icon-btn svg {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    background: var(--accent-red);
    color: white;
    border-radius: 50%;
    font-size: 0.625rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===================================
   DASHBOARD CONTENT
   =================================== */
.dashboard-content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

/* ===================================
   STATS GRID
   =================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    transition: var(--transition);
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.stat-icon.purple {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-dark));
}

.stat-icon.blue {
    background: linear-gradient(135deg, #4299e1, #3182ce);
}

.stat-icon.green {
    background: linear-gradient(135deg, #48bb78, #38a169);
}

.stat-icon.orange {
    background: linear-gradient(135deg, #ed8936, #dd6b20);
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
}

.stat-change.positive {
    background: rgba(72, 187, 120, 0.1);
    color: var(--accent-green);
}

.stat-change.negative {
    background: rgba(245, 101, 101, 0.1);
    color: var(--accent-red);
}

.stat-change svg {
    width: 12px;
    height: 12px;
}

/* ===================================
   CHARTS GRID
   =================================== */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.chart-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.chart-card.large {
    grid-column: span 1;
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-filter {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-body canvas {
    max-height: 300px;
}

/* ===================================
   BOTTOM GRID
   =================================== */
.bottom-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.data-card,
.activity-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.view-all {
    color: var(--primary-purple);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.view-all:hover {
    text-decoration: underline;
}

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

.data-table thead {
    background: var(--bg-primary);
}

.data-table th {
    padding: 0.875rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table td {
    padding: 0.875rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-primary);
}

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

.trend {
    font-weight: 600;
    font-size: 0.75rem;
}

.trend.up {
    color: var(--accent-green);
}

.trend.down {
    color: var(--accent-red);
}

/* ===================================
   ACTIVITY LIST
   =================================== */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.activity-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.activity-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.activity-icon.purple {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-dark));
}

.activity-icon.blue {
    background: linear-gradient(135deg, #4299e1, #3182ce);
}

.activity-icon.green {
    background: linear-gradient(135deg, #48bb78, #38a169);
}

.activity-icon.orange {
    background: linear-gradient(135deg, #ed8936, #dd6b20);
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1024px) {

    .charts-grid,
    .bottom-grid {
        grid-template-columns: 1fr;
    }

    .search-box {
        width: 200px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .search-box {
        display: none;
    }

    .dashboard-content {
        padding: var(--spacing-md);
    }
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-card,
.chart-card,
.data-card,
.activity-card {
    animation: fadeIn 0.5s ease;
}