:root {
    color-scheme: light;
    --bg: #ffffff;
    --bg-soft: #f8fafd;
    --panel-bg: #ffffff;
    --border: #eff2f5;
    --border-strong: #dce1e8;
    --text: #1e2329;
    --text-muted: #808a9d;
    --bid: #16c784;
    --ask: #ea3943;
    --accent: #16c784;
    --link: #6188ff;
    --row-hover: #f8fafd;
    --brand: #8dc647;
    --shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

:root.dark,
body.dark {
    color-scheme: dark;
    --bg: #131722;
    --bg-soft: #1a1e29;
    --panel-bg: #1e222d;
    --border: #2a2e39;
    --border-strong: #363b47;
    --text: #e6e8ea;
    --text-muted: #858b9c;
    --bid: #0ecb81;
    --ask: #f6465d;
    --accent: #16c784;
    --link: #6188ff;
    --row-hover: #262b37;
    --brand: #8dc647;
    --shadow: none;
}

* {
    box-sizing: border-box;
}

html {
    height: 100%;
    background: var(--bg);
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
}

body.chart-body {
    height: 100vh;
    overflow: hidden;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: var(--panel-bg);
    border-bottom: 1px solid var(--border);
    flex: 0 0 auto;
}

.site-header__inner {
    display: flex;
    align-items: center;
    gap: 28px;
    padding: 12px 16px;
    width: 100%;
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 9px;
    text-decoration: none;
    color: var(--text);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: -0.3px;
    white-space: nowrap;
}

.site-header__logo {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
}

.site-header__nav {
    display: flex;
    gap: 22px;
}

.site-header__link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
}

.site-header__link:hover {
    color: var(--text);
}

.site-header__link.is-active {
    color: var(--text);
    border-bottom-color: var(--brand);
}

.site-header__spacer {
    flex: 1;
}

.nav-search {
    flex: 0 1 520px;
    max-width: 520px;
    position: relative;
}

.site-header .status-dot {
    flex: 0 0 auto;
}

@media (max-width: 860px) {
    .site-header__inner {
        flex-wrap: wrap;
        gap: 10px 12px;
        padding: 10px 16px;
    }

    .site-header__brand {
        flex: 0 0 auto;
    }

    .site-header__inner .alert-bell-mount {
        margin-left: auto;
    }

    .site-header__nav {
        order: 3;
        flex: 1 1 100%;
        flex-wrap: wrap;
        gap: 6px 18px;
    }

    .site-header__link {
        padding: 4px 0;
    }

    .site-header__spacer {
        display: none;
    }
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    background: var(--panel-bg);
    border-bottom: 1px solid var(--border);
    flex: 0 0 auto;
}

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

.toolbar__group--spacer {
    flex: 1;
}

.toolbar__label {
    font-size: 12px;
    color: var(--text-muted);
}

#symbolInput {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 10px;
    text-transform: uppercase;
    width: 140px;
    font-size: 14px;
}

select {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 13px;
}

.interval-btn {
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 13px;
}

.interval-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.toolbar__button {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: border-color 0.12s ease, color 0.12s ease;
}

.toolbar__button:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--ask);
    display: inline-block;
}

.status-dot.connected {
    background: var(--bid);
}

.layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 0;
    flex: 1 1 auto;
    min-height: 0;
}

.panel {
    min-height: 0;
    overflow: hidden;
}

.panel--chart {
    border-right: 1px solid var(--border);
}

.chart-container {
    width: 100%;
    height: 100%;
}

.panel--side {
    display: flex;
    flex-direction: column;
    background: var(--panel-bg);
    overflow: hidden;
}

.widget {
    display: flex;
    flex-direction: column;
    min-height: 0;
    flex: 1;
}

.widget--orderbook {
    border-bottom: 1px solid var(--border);
}

.widget__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}

.widget__header h2 {
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg);
    color: var(--text-muted);
}

.orderbook__columns,
.aggtrade__columns {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 6px 12px;
    font-size: 11px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

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

.orderbook__col,
.aggtrade__col {
    text-align: right;
}

.orderbook__col:first-child,
.aggtrade__col:first-child {
    text-align: left;
}

.orderbook__side {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.orderbook__row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 1px 12px;
    font-size: 12px;
    position: relative;
    line-height: 18px;
}

.orderbook__row .depth-bar {
    position: absolute;
    top: 1px;
    bottom: 1px;
    left: 0;
    opacity: 0.12;
    pointer-events: none;
}

.orderbook__row.bid .depth-bar {
    background: var(--bid);
}

.orderbook__row.ask .depth-bar {
    background: var(--ask);
}

.orderbook__row .price {
    text-align: left;
    z-index: 1;
}

.orderbook__row .qty,
.orderbook__row .total {
    text-align: right;
    z-index: 1;
}

.orderbook__row.bid .price {
    color: var(--bid);
}

.orderbook__row.ask .price {
    color: var(--ask);
}

.orderbook__spread {
    text-align: center;
    font-size: 12px;
    padding: 4px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.aggtrade__body {
    flex: 1;
    overflow-y: auto;
}

.aggtrade__row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 1px 12px;
    font-size: 12px;
    line-height: 18px;
}

.aggtrade__row .price {
    text-align: left;
}

.aggtrade__row .qty,
.aggtrade__row .time {
    text-align: right;
}

.aggtrade__row.buy .price {
    color: var(--bid);
}

.aggtrade__row.sell .price {
    color: var(--ask);
}

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
        grid-template-rows: 55vh auto;
        height: auto;
        overflow-y: auto;
    }

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

    .chart-container {
        height: 55vh;
    }
}

/* ---------- Icon-only theme toggle ---------- */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    flex: 0 0 auto;
    transition: border-color 0.12s ease, color 0.12s ease;
}

.theme-toggle:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
    display: block;
}

.theme-toggle .icon-sun {
    display: none;
}

body.dark .theme-toggle .icon-sun,
:root.dark .theme-toggle .icon-sun {
    display: block;
}

body.dark .theme-toggle .icon-moon,
:root.dark .theme-toggle .icon-moon {
    display: none;
}

/* ---------- Symbol picker ---------- */
.sym-picker {
    position: relative;
    width: 100%;
}

.sym-picker__toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    height: 38px;
    padding: 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
}

.sym-picker__toggle:hover,
.sym-picker.is-open .sym-picker__toggle {
    border-color: var(--accent);
}

.sym-picker__avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    flex: 0 0 auto;
    text-transform: uppercase;
}

.sym-picker__text {
    flex: 1 1 auto;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 600;
}

.sym-picker__text .quote {
    color: var(--text-muted);
    font-weight: 500;
}

.sym-picker__caret {
    flex: 0 0 auto;
    color: var(--text-muted);
    transition: transform 0.12s ease;
}

.sym-picker.is-open .sym-picker__caret {
    transform: rotate(180deg);
}

.sym-picker__panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    z-index: 60;
    display: flex;
    flex-direction: column;
    max-height: 420px;
    background: var(--panel-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
    overflow: hidden;
}

.sym-picker__panel[hidden] {
    display: none;
}

.sym-picker__search {
    padding: 10px;
    border-bottom: 1px solid var(--border);
}

.sym-picker__search input {
    width: 100%;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 13px;
    outline: none;
    text-transform: uppercase;
}

.sym-picker__search input:focus {
    border-color: var(--accent);
}

.sym-picker__list {
    overflow-y: auto;
    padding: 6px;
}

.sym-picker__list::-webkit-scrollbar {
    width: 8px;
}

.sym-picker__list::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 4px;
}

.sym-picker__group {
    padding: 8px 10px 4px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.sym-row {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 7px 10px;
    border: none;
    background: transparent;
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
    text-align: left;
}

.sym-row:hover,
.sym-row.is-active {
    background: var(--row-hover);
}

.sym-row.is-current {
    box-shadow: inset 0 0 0 1px var(--accent);
}

.sym-row__avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    flex: 0 0 auto;
    text-transform: uppercase;
}

.sym-row__id {
    flex: 1 1 auto;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sym-row__base {
    font-weight: 600;
}

.sym-row__quote {
    color: var(--text-muted);
    font-size: 12px;
}

.sym-row__price {
    flex: 0 0 auto;
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    text-align: right;
    color: var(--text-muted);
}

.sym-row__chg {
    flex: 0 0 auto;
    min-width: 56px;
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    text-align: right;
    color: var(--text-muted);
}

.sym-row__chg.up {
    color: var(--bid);
}

.sym-row__chg.down {
    color: var(--ask);
}

.sym-picker__empty {
    padding: 26px 12px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}


/* Ad slots: hide until a placement is injected so no blank gap is left. */
.ad-mount {
    margin: 18px auto;
    max-width: 100%;
    text-align: center;
}

.ad-mount:empty {
    display: none;
}

.ad-mount ins.adsbygoogle {
    display: block;
}