/* === CSS Variabelen === */
:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-card-hover: #242738;
    --border-color: #2a2d3e;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0b0;
    --text-muted: #6b7280;

    --green: #22c55e;
    --green-bg: rgba(34, 197, 94, 0.1);
    --green-border: rgba(34, 197, 94, 0.3);
    --yellow: #eab308;
    --yellow-bg: rgba(234, 179, 8, 0.1);
    --yellow-border: rgba(234, 179, 8, 0.3);
    --red: #ef4444;
    --red-bg: rgba(239, 68, 68, 0.1);
    --red-border: rgba(239, 68, 68, 0.3);
    --blue: #3b82f6;
    --blue-light: #93c5fd;
    --blue-bg: rgba(59, 130, 246, 0.08);

    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.4);
    --transition: 0.2s ease;
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

/* === Dashboard Container === */
.dashboard {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}

/* === Header === */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    margin-bottom: 16px;
}

.header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

/* === Cards === */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: background var(--transition);
}

.card:hover {
    background: var(--bg-card-hover);
}

.card h2 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

/* === Status Balk === */
.status-bar {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.status-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all var(--transition);
}

.status-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.price-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-value {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
}

.price-value.small {
    font-size: 1.6rem;
}

.price-unit {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.trend {
    display: inline-block;
    font-size: 0.85rem;
    margin-top: 6px;
    font-weight: 600;
}

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

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

.trend.stable {
    color: var(--yellow);
}

/* Charge advice */
.charge-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    padding: 4px 0;
}

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

.charge-advice-card.yes {
    border-color: var(--green-border);
    background: var(--green-bg);
}

.charge-advice-card.no {
    border-color: var(--red-border);
    background: var(--red-bg);
}

.charge-advice-card.maybe {
    border-color: var(--yellow-border);
    background: var(--yellow-bg);
}

/* Price color states */
.price-green { color: var(--green); }
.price-yellow { color: var(--yellow); }
.price-red { color: var(--red); }

/* === Hoofdgrafiek === */
.main-chart-section {
    margin-bottom: 16px;
}

.chart-container {
    position: relative;
    height: 350px;
    width: 100%;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* === Bottom Grid === */
.bottom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

/* === Slim Verbruik === */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-header h2 {
    margin-bottom: 0;
}

.block-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.block-selector label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.block-selector select {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition);
}

.block-selector select:focus {
    border-color: var(--blue);
}

.cheapest-blocks {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.block-group h3 {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 8px;
}

.block-info {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 12px;
    border-left: 3px solid var(--green);
}

.block-time {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

.block-avg-price {
    font-size: 0.85rem;
    color: var(--green);
    font-weight: 600;
}

.block-placeholder {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.block-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 180px;
    overflow-y: auto;
}

.block-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 0.85rem;
}

.block-list-item .block-rank {
    color: var(--text-muted);
    font-weight: 600;
    min-width: 20px;
}

.block-list-item .block-item-time {
    flex: 1;
    margin-left: 8px;
}

.block-list-item .block-item-price {
    font-weight: 600;
    color: var(--green);
}

/* Scrollbar styling */
.block-list::-webkit-scrollbar {
    width: 4px;
}

.block-list::-webkit-scrollbar-track {
    background: transparent;
}

.block-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

/* === Context Panels === */
.context-panels {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sparkline-container {
    position: relative;
    height: 80px;
    width: 100%;
}

.sparkline-container canvas {
    width: 100% !important;
    height: 100% !important;
}

.accuracy-stats {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.accuracy-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.accuracy-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    min-width: 110px;
}

.accuracy-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.accuracy-unit {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 16px 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-sep {
    margin: 0 8px;
    opacity: 0.4;
}

/* === Error state === */
.error-banner {
    background: var(--red-bg);
    border: 1px solid var(--red-border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 16px;
    color: var(--red);
    font-size: 0.85rem;
    display: none;
}

.error-banner.visible {
    display: block;
}

/* === Responsive === */

/* Tablet */
@media (max-width: 900px) {
    .bottom-grid {
        grid-template-columns: 1fr;
    }

    .context-panels {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .accuracy-panel {
        grid-column: 1 / -1;
    }
}

/* Mobiel */
@media (max-width: 600px) {
    .dashboard {
        padding: 12px;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .header h1 {
        font-size: 1.2rem;
    }

    .status-bar {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .price-value {
        font-size: 1.8rem;
    }

    .chart-container {
        height: 250px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .context-panels {
        grid-template-columns: 1fr;
    }

    .accuracy-panel {
        grid-column: auto;
    }
}