* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #07111f;
    color: #ffffff;
}

.charts-page {
    min-height: 100vh;
    padding: 32px;
}

.charts-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    margin-bottom: 28px;
}

.eyebrow {
    color: #7dd3fc;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 12px;
    margin: 0 0 8px;
}

.charts-header h1 {
    margin: 0;
    font-size: 34px;
}

.charts-header p {
    color: #cbd5e1;
}

.back-btn,
#loadChartsBtn {
    border: none;
    background: #38bdf8;
    color: #04111f;
    padding: 12px 18px;
    border-radius: 12px;
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
}

.charts-control-panel {
    background: rgba(15, 23, 42, 0.92);
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: 18px;
    padding: 18px;
    display: flex;
    gap: 12px;
    align-items: end;
    margin-bottom: 24px;
}

.charts-control-panel label {
    display: block;
    font-size: 13px;
    color: #cbd5e1;
    margin-bottom: 6px;
}

.charts-control-panel select {
    min-width: 260px;
    padding: 12px;
    border-radius: 12px;
    border: 1px solid #334155;
    background: #020617;
    color: #ffffff;
}

.charts-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.summary-card {
    background: #0f172a;
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: 18px;
    padding: 18px;
}

.summary-card span {
    display: block;
    color: #94a3b8;
    font-size: 13px;
    margin-bottom: 8px;
}

.summary-card strong {
    font-size: 30px;
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.chart-card {
    background: #0f172a;
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: 20px;
    padding: 18px;
}

.chart-card-header {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: start;
    margin-bottom: 16px;
}

.chart-card h3 {
    margin: 0 0 6px;
    font-size: 18px;
}

.chart-card p {
    margin: 0;
    color: #94a3b8;
    font-size: 13px;
}

.chart-type-select {
    padding: 10px;
    border-radius: 10px;
    background: #020617;
    color: #ffffff;
    border: 1px solid #334155;
}

.chart-box {
    height: 320px;
    position: relative;
}

.empty-state {
    grid-column: 1 / -1;
    background: #0f172a;
    border: 1px dashed #475569;
    color: #94a3b8;
    text-align: center;
    padding: 40px;
    border-radius: 18px;
}

.buildframe-footer {
    text-align: center;
    padding: 18px;
    color: #94a3b8;
    font-size: 13px;
    background: #020617;
}

@media (max-width: 900px) {

    .charts-header,
    .charts-control-panel {
        flex-direction: column;
        align-items: stretch;
    }

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

    .charts-page {
        padding: 18px;
    }
}