body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: #e0e0e0;
    background-color: #121212;
}

.dashboard {
    display: grid;
    grid-template-columns: 240px 1fr;
    height: 100vh;
}

.sidebar {
    background-color: #1e1e1e;
    padding: 1rem;
    display: flex;
    flex-direction: column;
}

.sidebar-header h2 {
    margin: 0;
    font-size: 1.2rem;
}

.sidebar-nav h3 {
    font-size: 0.9rem;
    color: #a0a0a0;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav ul li a {
    color: #e0e0e0;
    text-decoration: none;
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.sidebar-nav ul li a:hover {
    background-color: #2a2a2a;
}

.sidebar-nav ul li a.active {
    background-color: #333;
}

.main-content {
    padding: 1rem;
    overflow-y: auto;
}

.main-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.header-card {
    background-color: #1e1e1e;
    padding: 1rem;
    border-radius: 8px;
    flex-grow: 1;
}

.header-card p {
    margin: 0;
    font-size: 0.9rem;
    color: #a0a0a0;
}

.header-card span {
    font-size: 1.2rem;
    font-weight: bold;
}

.chart-section, .table-section {
    background-color: #1e1e1e;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.table-section {
    overflow-x: auto;
}

.chart-section h2 {
    margin-top: 0;
}

.active-category-tag {
    margin: 0.5rem 0 1rem;
    color: #9ec5ff;
    font-size: 0.88rem;
}

.table-controls {
    margin-bottom: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.exchange-select-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 180px;
}

.exchange-select-group label {
    font-size: 0.85rem;
    color: #a0a0a0;
}

.exchange-select-group select {
    background: #151515;
    color: #efefef;
    border: 1px solid #353535;
    border-radius: 6px;
    padding: 0.55rem 0.7rem;
}

.selected-exchange-pair {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: #9ec5ff;
}

.pair-chart-section {
    background-color: #1e1e1e;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    display: none;
}

.pair-chart-section.visible {
    display: block;
}

.pair-chart-section h3 {
    margin: 0 0 0.5rem;
}

.pair-chart-section p {
    margin: 0 0 1rem;
    color: #a7b8d8;
}

.pair-chart-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.pair-chart-box h4 {
    margin: 0 0 0.6rem;
    font-size: 0.9rem;
    color: #cfd6e6;
}

.pair-chart-container {
    min-height: 320px;
    border: 1px solid #2e2e2e;
    border-radius: 8px;
    overflow: hidden;
    background: #111;
}

.pair-chart-iframe {
    width: 100%;
    height: 320px;
    border: 0;
    display: block;
}

.pair-chart-message {
    color: #ff8a8a;
    padding: 0.8rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background-color: #2a2a2a;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #2a2a2a;
    vertical-align: middle;
}

/* Table alignment: first column left, others right */
thead th:first-child,
tbody td:first-child {
    text-align: left;
}

thead th:not(:first-child),
tbody td:not(:first-child) {
    text-align: right;
}

.cell-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.cell-main {
    line-height: 1.25;
}

.cell-sub {
    margin-top: 0.2rem;
    font-size: 0.78rem;
    color: #95a3bd;
    line-height: 1.2;
}

.tone-positive {
    color: #5ed39a;
}

.tone-negative {
    color: #ff8c8c;
}

.tone-neutral {
    color: #e0e0e0;
}

th.sortable {
    cursor: pointer;
    user-select: none;
}

th.sortable:hover {
    background-color: #353535;
}

.sort-indicator {
    display: inline-block;
    min-width: 1rem;
    margin-left: 0.2rem;
    color: #9ec5ff;
}

tbody tr:hover {
    background-color: #2a2a2a;
}

tbody tr[data-symbol] {
    cursor: pointer;
}

tbody tr.active-row {
    background-color: #24324a;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    .sidebar {
        display: none;
    }
    .main-header {
        flex-wrap: wrap;
    }
    .pair-chart-grid {
        grid-template-columns: 1fr;
    }
}