:root {
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --card-bg: #1e293b;
    --border-color: #334155;
    --accent: #38bdf8;
    --grid-color: #334155;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.app-header {
    background-color: var(--card-bg);
    margin-top: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 5%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .app-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.header-content h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 600px;
}

.inspiration-note {
    font-size: 0.75rem !important;
    opacity: 0.8;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.inspiration-note a {
    color: var(--accent);
    text-decoration: none;
}

.inspiration-note a:hover {
    text-decoration: underline;
}

.global-stats-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background-color: #0f172a;
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

@media (min-width: 768px) {
    .global-stats-container {
        flex-direction: row;
    }
}

.stat-group {
    display: flex;
    gap: 1.5rem;
    justify-content: space-between;
}

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

.stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.app-main {
    padding: 2rem 5%;
}

.plots-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 1400px) {
    .plots-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.plot-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.plot-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
}

.plot-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.control-group {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.slider {
    flex-grow: 1;
    max-width: 400px;
    cursor: pointer;
    accent-color: var(--accent);
    /* Native styling for modern browsers */
}

.accent-text {
    color: var(--accent);
    font-weight: 600;
}

.select-styled {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-family: inherit;
    font-size: 0.9rem;
    max-width: 250px;
}

.dual-panel-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    width: 100%;
}

@media (min-width: 900px) {
    .dual-panel-wrapper {
        grid-template-columns: 1.25fr 2fr;
    }
}

.table-container {
    height: 600px;
    overflow-y: auto;
    background-color: var(--card-bg);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.85rem;
}

.ranking-table th {
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
    z-index: 10;
}

.ranking-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.ranking-table tbody tr {
    transition: background-color 0.15s ease;
    cursor: pointer;
}

.ranking-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.ranking-table tbody tr.active-row {
    background-color: rgba(250, 204, 21, 0.15);
    border-left: 3px solid var(--accent);
}

.plot-container {
    width: 100%;
    height: 600px;
    background-color: var(--card-bg);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    padding: 1rem;
    /* transition for a micro-animation */
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.plot-container:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

@media (max-aspect-ratio: 1/1) {

    .plot-container,
    .table-container {
        height: auto !important;
        aspect-ratio: 1 / 1;
    }
}

.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Back link styling */
.back-link {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9rem;
    background: rgba(20, 20, 30, 0.6);
    border-radius: 6px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: color 0.2s, background 0.2s;
    z-index: 1000;
}

.back-link:hover {
    color: #fff;
    background: rgba(20, 20, 30, 0.9);
}