/* --- General & Theme --- */
:root {
    --bg-color: #F7F7F7;
    /* Slightly off-white background */
    --panel-bg: #FFFFFF;
    --border-color: #F0F0F0;
    --text-primary: #1E2329;
    --text-secondary: #707A8A;
    --positive: #16C784;
    --negative: #EA3943;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    font-size: 12px;
    overflow: hidden;
    /* Prevent main page scroll */
}

.panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
}

.tabs {
    display: flex;
    gap: 20px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
}

.tab-item {
    cursor: pointer;
    color: var(--text-secondary);
    padding-bottom: 8px;
    border-bottom: 2px solid transparent;
    font-weight: 600;
}

.tab-item.active {
    color: var(--text-primary);
    border-bottom-color: var(--positive);
}

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

th,
td {
    padding: 6px 16px;
    text-align: right;
    white-space: nowrap;
}

th {
    font-weight: normal;
    color: var(--text-secondary);
}

td:first-child,
th:first-child {
    text-align: left;
}

.positive {
    color: var(--positive);
}

.negative {
    color: var(--negative);
}

/* --- Top Bar --- */
.top-bar {
    display: flex;
    align-items: center;
    padding: 0 16px;
    height: 50px;
    border-bottom: 1px solid var(--border-color);
    gap: 24px;
    background-color: var(--panel-bg);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stat-item.main-coin {
    font-weight: 600;
    font-size: 16px;
}

.stat-item img {
    width: 24px;
    height: 24px;
}

.stat-item .label {
    color: var(--text-secondary);
}

.stat-item .value {
    font-weight: 600;
}

/* --- Trading Layout --- */
.trading-layout {
    display: grid;
    grid-template-columns: 280px 1fr 280px;
    gap: 8px;
    padding: 8px;
    height: calc(100vh - 59px);
    /* Full height minus top bar */
    box-sizing: border-box;
}

.panel {
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* --- Left Column: Market --- */
.market-container {
    overflow-y: auto;
}

.market-container .search-box {
    padding: 8px 16px;
    border-bottom: 1px solid var(--border-color);
}

.market-container input {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #EAECEF;
    padding: 8px;
    border-radius: 4px;
}

.market-container .subtext {
    display: block;
    color: var(--text-secondary);
    font-size: 11px;
}

.market-container .active-row {
    background-color: #FAFAFA;
}

/* --- Center Column: Chart --- */
.chart-main-container {
    display: grid;
    grid-template-rows: 1fr auto;
    gap: 8px;
}

.chart-panel {
    flex-grow: 1;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
}

.chart-header h3 {
    margin: 0;
    font-size: 14px;
}

.chart-actions button {
    background: #EFF2F5;
    color: var(--text-secondary);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.chart-actions button.active {
    background-color: var(--positive);
    color: white;
}

#tv_chart_container {
    height: calc(100% - 45px);
}

.lower-tabs-panel .tab-content {
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    flex-grow: 1;
}

/* --- Right Column: Order Book --- */
.order-book-container {
    padding: 0 8px;
}

.panel-header {
    padding: 10px 8px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 14px;
}

.order-book {
    overflow-y: auto;
}

.order-book .current-price {
    font-size: 18px;
    font-weight: 600;
    padding: 12px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.order-book td,
.order-book th {
    padding: 4px 8px;
    font-size: 11px;
}