:root {
    --bg-primary: #1e1e24;
    --bg-secondary: #26262e;
    --bg-card: #2e2e38;
    --bg-hover: #353540;
    --text-primary: #e8e4df;
    --text-secondary: #a3a098;
    --text-muted: #7a7770;
    /* Pastel orange */
    --orange: #e8a87c;
    --orange-soft: #f3d1b0;
    --orange-dim: #c98c63;
    /* Pastel green */
    --green: #8ec5a5;
    --green-soft: #c1dccd;
    --green-dim: #6fa886;
    /* Accent mappings */
    --primary-color: var(--orange);
    --accent-positive: var(--green);
    --accent-negative: #e07a7a;
    --border-subtle: rgba(255, 255, 255, 0.04);
    --border-soft: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* ---------- Sidebar ---------- */

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

.sidebar {
    width: 240px;
    background-color: var(--bg-secondary);
    padding: 1.75rem 1.25rem;
    border-right: 1px solid var(--border-subtle);
}

.logo h2 {
    color: var(--orange);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 2rem;
    letter-spacing: 0.5px;
}

.nav-menu {
    list-style: none;
}

    .nav-menu li a {
        display: block;
        padding: 0.75rem 1rem;
        color: var(--text-secondary);
        text-decoration: none;
        border-radius: 8px;
        font-size: 0.92rem;
        transition: all 0.2s ease;
        margin-bottom: 0.25rem;
    }

        .nav-menu li a:hover {
            background-color: var(--bg-hover);
            color: var(--orange-soft);
        }

        .nav-menu li a.active {
            background-color: rgba(232, 168, 124, 0.12);
            color: var(--orange);
            border-left: 3px solid var(--orange);
            padding-left: calc(1rem - 3px);
        }

/* ---------- Main content ---------- */

.main-content {
    flex: 1;
    padding: 2rem 2.5rem;
    overflow-y: auto;
}

.page-title {
    margin-bottom: 1.75rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ---------- Stats grid ---------- */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 1.4rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.1rem;
    transition: border-color 0.2s ease;
}

    .stat-card:hover {
        border-color: var(--border-soft);
    }

.stat-icon {
    font-size: 1.7rem;
    background-color: rgba(142, 197, 165, 0.1);
    border-radius: 10px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card:nth-child(even) .stat-icon {
    background-color: rgba(232, 168, 124, 0.1);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-bottom: 0.2rem;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-delta {
    font-size: 0.78rem;
    margin-top: 0.25rem;
}

.positive {
    color: var(--green);
}

.negative {
    color: var(--accent-negative);
}

/* ---------- Charts section ---------- */

.charts-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.25rem;
}

.chart-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 1.5rem;
}

    .chart-card h3 {
        margin-bottom: 1.25rem;
        color: var(--text-secondary);
        font-size: 1rem;
        font-weight: 500;
    }

.chart-placeholder {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    height: 200px;
    padding-bottom: 28px;
}

.bar {
    flex: 1;
    border-radius: 6px 6px 0 0;
    background-color: var(--orange-dim);
    opacity: 0.65;
    position: relative;
    transition: all 0.25s ease;
}

    .bar:hover {
        opacity: 1;
        background-color: var(--orange);
    }

    .bar:nth-child(odd) {
        background-color: var(--green-dim);
    }

        .bar:nth-child(odd):hover {
            background-color: var(--green);
        }

    .bar span {
        position: absolute;
        bottom: -22px;
        left: 50%;
        transform: translateX(-50%);
        font-size: 0.72rem;
        color: var(--text-muted);
    }

/* ---------- Activity list ---------- */

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.activity-item {
    padding: 0.75rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    font-size: 0.88rem;
    transition: border-color 0.2s ease;
}

    .activity-item:hover {
        border-color: var(--border-soft);
    }

.activity-time {
    color: var(--text-muted);
    font-size: 0.76rem;
    display: block;
    margin-bottom: 0.2rem;
}

.activity-desc {
    color: var(--text-secondary);
}

/* ---------- Analytics page ---------- */

.analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.75rem;
}

.date-range select {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-soft);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
}

    .date-range select:focus {
        outline: none;
        border-color: var(--orange);
    }

/* Metrics row (horizontal tiles) */

.metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric-tile {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 1.2rem;
}

    .metric-tile.positive .metric-change {
        color: var(--green);
    }

    .metric-tile.negative .metric-change {
        color: var(--accent-negative);
    }

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.metric-name {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.metric-change {
    font-size: 0.8rem;
    font-weight: 500;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.metric-bar {
    height: 4px;
    background-color: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
}

.metric-progress {
    height: 100%;
    border-radius: 2px;
    transition: width 0.5s ease;
}

/* Analytics grid layout */

.analytics-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 1.4rem;
}

.panel-large {
    grid-column: 1;
}

.panel-small {
    grid-column: 2;
}

.panel-header h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Traffic sources */

.source-list {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.source-item {
    display: grid;
    grid-template-columns: 1fr 2fr 70px;
    align-items: center;
    gap: 1rem;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--border-subtle);
}

    .source-item:last-child {
        border-bottom: none;
    }

.source-info {
    display: flex;
    flex-direction: column;
}

.source-name {
    font-size: 0.88rem;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.source-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.source-bar {
    height: 6px;
    background-color: var(--bg-secondary);
    border-radius: 3px;
    overflow: hidden;
}

.source-progress {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s ease;
}

.source-percentage {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--orange);
    text-align: right;
}

/* Device breakdown */

.device-chart {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.device-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.device-ring {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: conic-gradient( var(--ring-color) 0deg calc(var(--ring-size) * 3.6deg), var(--bg-secondary) calc(var(--ring-size) * 3.6deg) 360deg );
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
}

.device-ring-inner {
    width: 28px;
    height: 28px;
    background-color: var(--bg-card);
    border-radius: 50%;
    position: absolute;
}

.device-icon {
    z-index: 2;
    font-size: 0.9rem;
}

.device-label {
    flex: 1;
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

    .device-label span:first-child {
        color: var(--text-primary);
    }

    .device-label span:last-child {
        color: var(--text-secondary);
    }

/* Data table */

.table-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 1.4rem;
}

.data-table {
    margin-top: 0.5rem;
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 0.75rem 1rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.88rem;
}

    .table-row:last-child {
        border-bottom: none;
    }

.cell {
    color: var(--text-secondary);
}

.cell-page {
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 0.82rem;
}

.cell-number {
    color: var(--orange);
    font-weight: 500;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .analytics-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .analytics-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .source-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .table-header {
        display: none;
    }

    .table-row {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
        padding: 0.75rem;
    }
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        padding: 1rem;
    }

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

    .main-content {
        padding: 1.25rem;
    }
}