:root {
    /* Backgrounds */
    --color-bg: #0b0d14;
    --color-bg-surface: #111320;
    --color-bg-card: #181b2e;
    --color-bg-card-hover: #1f2340;
    --color-bg-sidebar: #0d0f1a;
    --color-bg-header: #0f1120;
    /* Text */
    --color-text: #e8eaf4;
    --color-text-muted: #6b7194;
    --color-text-heading: #f0f2ff;
    /* Accent */
    --color-accent: #6366f1;
    --color-accent-hover: #818cf8;
    --color-accent-subtle: rgba(99, 102, 241, 0.10);
    /* Semantic */
    --color-success: #34d399;
    --color-success-subtle: rgba(52, 211, 153, 0.10);
    --color-danger: #f87171;
    --color-danger-subtle: rgba(248, 113, 113, 0.10);
    --color-warning: #fbbf24;
    --color-warning-subtle: rgba(251, 191, 36, 0.10);
    --color-info: #60a5fa;
    /* Border & Shadow */
    --color-border: #1c2038;
    --color-border-light: #252a45;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    /* Layout */
    --sidebar-width: 260px;
    --header-height: 56px;
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
}

/* ===== BASE ===== */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* ===== UTILITY ===== */
.text-muted {
    color: var(--color-text-muted) !important;
}

.text-success {
    color: var(--color-success) !important;
}

.text-danger {
    color: var(--color-danger) !important;
}

/* ===== RADZEN DARK OVERRIDES ===== */
.rz-layout {
    background: var(--color-bg);
    color: var(--color-text);
}

.rz-header {
    background: var(--color-bg-header);
    border-bottom: 1px solid var(--color-border);
}

.rz-sidebar {
    background: var(--color-bg-sidebar);
    border-right: 1px solid var(--color-border);
}

.rz-body {
    background: var(--color-bg);
}

.rz-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    color: var(--color-text);
}

/* Panel Menu */
.rz-panel-menu {
    background: transparent;
}

    .rz-panel-menu .rz-navigation-item {
        border-radius: var(--radius-sm);
        margin: 2px 8px;
        color: var(--color-text-muted);
        transition: all 0.2s ease;
    }

        .rz-panel-menu .rz-navigation-item:hover {
            background: var(--color-accent-subtle);
            color: var(--color-text);
        }

    .rz-panel-menu .rz-navigation-item-active,
    .rz-panel-menu .rz-navigation-item-active:hover {
        background: var(--color-accent-subtle);
        color: var(--color-accent);
    }

    .rz-panel-menu .rz-navigation-item-icon {
        color: var(--color-text-muted);
    }

    .rz-panel-menu .rz-navigation-item-active .rz-navigation-item-icon {
        color: var(--color-accent);
    }

    .rz-panel-menu .rz-navigation-item:hover .rz-navigation-item-icon {
        color: var(--color-text);
    }

/* Buttons */
.rz-button.rz-variant-text,
.rz-button.rz-light {
    color: var(--color-text-muted);
}

    .rz-button.rz-variant-text:hover,
    .rz-button.rz-light:hover {
        background: var(--color-accent-subtle);
        color: var(--color-text);
    }

.rz-button.rz-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

    .rz-button.rz-primary:hover {
        background: var(--color-accent-hover);
        border-color: var(--color-accent-hover);
    }

/* Data Grid */
.rz-data-grid {
    background: transparent;
    border: none;
    color: var(--color-text);
}

.rz-grid-table thead {
    background: var(--color-bg-surface);
}

.rz-grid-table th {
    color: var(--color-text-muted) !important;
    border-bottom: 1px solid var(--color-border) !important;
    font-weight: 600;
}

.rz-grid-table td {
    border-bottom: 1px solid var(--color-border) !important;
    color: var(--color-text);
}

.rz-grid-table tbody tr:hover td {
    background: var(--color-bg-card-hover) !important;
}

/* Chart */
.rz-chart text {
    fill: var(--color-text-muted) !important;
}

.rz-chart .rz-grid-line {
    stroke: var(--color-border) !important;
}

.rz-chart .rz-axis-line,
.rz-chart .rz-tick-line {
    stroke: var(--color-border) !important;
}

/* Text */
.rz-text {
    color: var(--color-text);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: 3px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--color-text-muted);
    }

/* ===== RESPONSIVE ===== */
@media (min-width: 769px) {
    .mobile-only {
        display: none !important;
    }

    .sidebar-toggle {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }

    .rz-header,
    .rz-body {
        margin-left: 0 !important;
    }

    .app-sidebar {
        position: fixed !important;
        top: 0;
        left: 0;
        bottom: 0;
        z-index: 1100;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: none;
    }

    .sidebar-open .app-sidebar {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    .sidebar-backdrop {
        position: fixed !important;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1050;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .sidebar-open .sidebar-backdrop {
        opacity: 1;
        pointer-events: auto;
        background: rgba(0, 0, 0, 0.5);
    }

    .body-content {
        padding: 1rem;
    }
}