:root {
    --bg: #0f1115;
    --panel: #161a1f;
    --ui: #1c2128;
    --border: #2d333b;
    --text: #c9d1d9;
    --text-muted: #8b949e;
    --accent: #58a6ff;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
    --info: #388bfd;
    --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --mono-stack: 'Roboto Mono', 'SF Mono', Consolas, "Liberation Mono", Menlo, monospace;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 20px;
    background-color: #000;
    /* Darker bg for contrast */
    color: var(--text);
    font-family: var(--font-stack);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Layout */
#ui-container {
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--ui);
    border: 1px solid var(--border);
    border-radius: 8px 8px 0 0;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 10;
}

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

.label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

.value {
    font-size: 1.25rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: white;
    font-family: var(--mono-stack);
}

.quad-indicator {
    padding: 4px 12px;
    border-radius: 4px;
    font-weight: 800;
    font-size: 0.9rem;
    text-align: center;
    min-width: 80px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.tab-nav {
    display: flex;
    background: var(--ui);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    padding: 0 10px;
}

.tab-btn {
    padding: 15px 20px;
    background: transparent;
    color: var(--text-muted);
    border: none;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    font-family: var(--font-stack);
}

.tab-btn:hover {
    color: var(--text);
    background: #252b33;
}

.tab-btn.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
    background: #252b33;
}

.content-area {
    flex-grow: 1;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border-radius: 0 0 8px 8px;
    border: 1px solid var(--border);
    border-top: none;
    background: var(--bg);
    /* Ensure content has bg */
}

.tab-pane {
    display: none;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    flex-direction: column;
}

.tab-pane.active {
    display: flex;
}

/* Dashboard */
#charts-row {
    display: flex;
    height: 50vh;
    min-height: 400px;
    width: 100%;
    background-color: var(--panel);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.chart-panel {
    flex: 1;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

#quad-panel {
    border-right: 1px solid var(--border);
    flex: 1.2;
}

#market-tabs {
    display: flex;
    background: #252b33;
    border-bottom: 1px solid var(--border);
    height: 36px;
    flex-shrink: 0;
    overflow-x: auto;
}

.asset-tab {
    flex: 1;
    min-width: 60px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 700;
    border-bottom: 2px solid transparent;
    transition: background 0.2s;
}

.asset-tab:hover {
    background: #2d333b;
}

.asset-tab.active {
    color: white;
    border-bottom: 2px solid var(--accent);
    background: #2d333b;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: rgba(28, 33, 40, 0.9);
    padding: 8px 16px;
    border-radius: 30px;
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    z-index: 20;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

button {
    background: #373e47;
    color: white;
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: background 0.2s;
    font-family: var(--font-stack);
}

button:hover {
    background: #444c56;
}

button:active {
    background: #2d333b;
}

/* Grids & Tables */
.kpi-section {
    padding: 20px;
    flex-grow: 1;
    background: var(--bg);
    overflow-y: auto;
}

.section-label-row {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    max-width: 1400px;
    margin: 0 auto;
}

.kpi-card {
    background: var(--ui);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border);
    border-left: 4px solid var(--border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.kpi-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
}

.kpi-value {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 8px 0;
    color: var(--text);
    font-family: var(--mono-stack);
}

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

/* Settings */
.settings-container {
    padding: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.section-header {
    font-size: 0.9rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 30px 0 15px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 5px;
    font-weight: bold;
}

.setting-row {
    background: var(--ui);
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border: 1px solid var(--border);
}

.setting-top {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    font-size: 0.95rem;
}

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

/* Tooltip & Info */
.info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #333;
    color: #aaa;
    font-size: 10px;
    font-style: normal;
    cursor: help;
    border: 1px solid #555;
}

.info-icon:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.tooltip {
    position: fixed;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    pointer-events: none;
    z-index: 1000;
    max-width: 250px;
    display: none;
    border: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.panel-info-overlay {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 5;
}

#chart-overlay {
    position: absolute;
    top: 10px;
    left: 10px;
    pointer-events: none;
    background: rgba(0, 0, 0, 0.7);
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--border);
}

/* Education Tab */
.edu-container {
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.edu-intro {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text);
    margin-bottom: 40px;
    max-width: 800px;
}

.edu-vis-row {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.edu-vis-panel {
    flex: 2;
    background: var(--ui);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
    min-width: 300px;
}

.edu-text-panel {
    flex: 1;
    min-width: 300px;
}

.edu-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

#eduCanvas {
    width: 100%;
    height: 350px;
    background: #111;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.edu-btn {
    margin-top: 15px;
    width: 100%;
    background: var(--accent);
    border: none;
    color: #000;
}

.edu-btn:hover {
    background: #79c0ff;
}

.edu-list {
    line-height: 1.6;
    color: var(--text-muted);
}

.edu-list li {
    margin-bottom: 10px;
}

.edu-list strong {
    color: var(--text);
}

.edu-alert {
    background: rgba(56, 139, 253, 0.15);
    border-left: 4px solid var(--info);
    padding: 15px;
    margin-top: 20px;
    border-radius: 0 4px 4px 0;
    font-size: 0.9rem;
    color: var(--text);
}

.status-good {
    border-left-color: var(--success);
}

.status-warn {
    border-left-color: var(--warning);
}

.status-bad {
    border-left-color: var(--danger);
}

.status-blue {
    border-left-color: var(--info);
}

.val-pos {
    color: var(--success);
}

.val-neg {
    color: var(--danger);
}

.val-win {
    color: #fff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    font-weight: 800;
}

.q1 {
    background-color: #238636;
    color: white;
}

.q2 {
    background-color: #d29922;
    color: black;
}

.q3 {
    background-color: #da3633;
    color: white;
}

.q4 {
    background-color: #0969da;
    color: white;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table th {
    text-align: left;
    background: #252b33;
    padding: 10px;
    color: var(--text-muted);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.data-table td {
    padding: 10px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}

.text-right {
    text-align: right;
}

.text-center {
    text-align: center;
}

@media (max-width: 800px) {
    #charts-row {
        flex-direction: column;
        height: auto;
    }

    .chart-panel {
        height: 350px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    #ui-container {
        flex-wrap: wrap;
        gap: 10px;
    }

    /* Flow Diagram Styles */
    .edu-example-flow {
        margin: 40px 0;
        padding: 30px;
        background: #1a1a1a;
        border-radius: 12px;
        border: 2px solid #4CAF50;
    }

    .edu-example-flow h2 {
        text-align: center;
        font-size: 2rem;
        margin-bottom: 10px;
        color: #4CAF50;
    }

    .edu-flow-intro {
        text-align: center;
        font-size: 1.1rem;
        color: #aaa;
        margin-bottom: 30px;
    }

    .flow-diagram {
        width: 100%;
        max-width: 1000px;
        height: auto;
        margin: 0 auto;
        display: block;
        background: #0d0d0d;
        border-radius: 8px;
        padding: 20px;
    }

    .flow-diagram text {
        font-family: 'Inter', sans-serif;
        font-weight: 600;
    }

    .flow-step {
        transition: all 0.3s ease;
    }

    .flow-step:hover {
        opacity: 0.9;
    }

    .math-detail text {
        font-family: 'Roboto Mono', monospace;
        font-weight: 400;
    }
}