.multi-chart-main {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    gap: 12px;
    padding: 12px;
    overflow: hidden;
}

.multi-stock-panel {
    width: 330px;
    flex: 0 0 330px;
    min-height: 0;
}

.multi-stock-panel .panel-header {
    min-height: 52px;
    padding: 12px 16px;
}

.multi-drag-hint {
    padding: 9px 14px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    background: rgba(41, 98, 255, 0.05);
    font-size: 11px;
    line-height: 1.45;
}

.multi-drag-hint span {
    color: #93c5fd;
    font-weight: 700;
}

.multi-drag-hint-mobile { display: none; }

.multi-stock-table th,
.multi-stock-table td {
    padding: 8px 5px;
}

.multi-stock-table tbody tr {
    cursor: grab;
    user-select: none;
}

.multi-stock-table tbody tr:active { cursor: grabbing; }
.multi-stock-table tbody tr.in-grid { background: rgba(41, 98, 255, 0.045); }
.multi-stock-table tbody tr.active {
    background: rgba(41, 98, 255, 0.13);
    border-left: 3px solid var(--accent);
}

.multi-stock-table .col-price { text-align: right; }
.multi-stock-table .col-change { text-align: right; width: 68px; }

.multi-workspace {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    background: #0b0f18;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.multi-workspace-toolbar {
    min-height: 54px;
    flex: 0 0 54px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 8px 14px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-panel-header);
}

.multi-workspace-toolbar h2 { font-size: 15px; line-height: 1.2; }
.multi-workspace-toolbar p { margin-top: 2px; color: var(--text-muted); font-size: 10.5px; }

.layout-controls {
    display: flex;
    align-items: center;
    gap: 5px;
}

.layout-controls > span {
    margin-right: 4px;
    color: var(--text-muted);
    font-size: 11px;
}

.profile-toggle-button,
.layout-button,
.workspace-fullscreen-button {
    min-width: 44px;
    height: 30px;
    padding: 0 9px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.025);
    font: 600 11px/1 var(--font-ui);
    cursor: pointer;
}

.profile-toggle-button:hover,
.layout-button:hover,
.workspace-fullscreen-button:hover { color: var(--text-primary); border-color: #475569; }
.profile-toggle-button.active,
.layout-button.active { color: #fff; border-color: var(--accent); background: var(--accent); }

.profile-toggle-button { min-width: 66px; }
.v827-toggle-button { min-width: 74px; }
.workspace-fullscreen-button {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-width: 58px;
}
.workspace-fullscreen-button svg { width: 17px; height: 17px; flex: 0 0 auto; }
.workspace-fullscreen-button .fullscreen-exit-icon { display: none; }
.workspace-fullscreen-button[aria-pressed="true"] .fullscreen-enter-icon { display: none; }
.workspace-fullscreen-button[aria-pressed="true"] .fullscreen-exit-icon { display: block; }

body.charts-fullscreen-active {
    overflow: hidden !important;
    overscroll-behavior: none;
}

.multi-workspace.is-fullscreen {
    position: fixed;
    z-index: 220;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    min-height: 100vh;
    min-height: 100dvh;
    max-height: none;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.multi-workspace.is-fullscreen .workspace-fullscreen-button { display: inline-flex; }
.multi-workspace.is-fullscreen .multi-workspace-toolbar {
    min-height: calc(54px + env(safe-area-inset-top));
    flex-basis: calc(54px + env(safe-area-inset-top));
    padding-top: calc(7px + env(safe-area-inset-top));
    padding-right: max(10px, env(safe-area-inset-right));
    padding-left: max(10px, env(safe-area-inset-left));
}
.multi-workspace.is-fullscreen .multi-chart-grid {
    padding-right: max(6px, env(safe-area-inset-right));
    padding-bottom: max(6px, env(safe-area-inset-bottom));
    padding-left: max(6px, env(safe-area-inset-left));
}

.multi-chart-grid {
    --multi-profile-width: 72px;
    flex: 1 1 auto;
    min-height: 0;
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    grid-template-rows: repeat(1, minmax(0, 1fr));
    gap: 8px;
    padding: 8px;
    overflow: hidden;
}

.multi-chart-grid[data-grid-size="2"] {
    --multi-profile-width: 52px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, minmax(0, 1fr));
}

.multi-chart-grid[data-grid-size="3"] {
    --multi-profile-width: 36px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: repeat(3, minmax(0, 1fr));
    gap: 6px;
    padding: 6px;
}

.multi-chart-cell {
    min-width: 0;
    min-height: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid #202a3d;
    border-radius: 8px;
    background: var(--bg-panel);
    transition: border-color 130ms ease, box-shadow 130ms ease;
}

.multi-chart-cell.active {
    border-color: rgba(41, 98, 255, 0.9);
    box-shadow: 0 0 0 1px rgba(41, 98, 255, 0.28), inset 0 0 0 1px rgba(41, 98, 255, 0.12);
}

.multi-chart-cell.drop-target {
    border-color: #60a5fa;
    box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.45), 0 0 28px rgba(41, 98, 255, 0.24);
}

.multi-chart-cell .chart-toast {
    bottom: 12px;
    white-space: nowrap;
}

.multi-chart-header {
    min-height: 41px;
    flex: 0 0 41px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 5px 8px 5px 10px;
    border-bottom: 1px solid #20283a;
    background: #121826;
}

.multi-chart-symbol {
    min-width: 0;
    display: flex;
    align-items: baseline;
    gap: 7px;
}

.multi-chart-name {
    overflow: hidden;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.multi-chart-code { color: var(--text-muted); font: 10px/1 var(--font-mono); }
.multi-chart-price { color: var(--text-secondary); font: 600 11px/1 var(--font-mono); white-space: nowrap; }
.multi-chart-price.up { color: #ef5350; }
.multi-chart-price.down { color: #2962ff; }

.multi-chart-actions {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 5px;
}

.multi-timeframes {
    display: flex;
    gap: 1px;
    padding: 2px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(255,255,255,.025);
}

.multi-timeframe {
    min-width: 27px;
    height: 23px;
    padding: 0 5px;
    border: 0;
    border-radius: 3px;
    color: var(--text-muted);
    background: transparent;
    font: 600 10px/1 var(--font-ui);
    cursor: pointer;
}

.multi-timeframe:hover { color: var(--text-primary); }
.multi-timeframe.active { color: #fff; background: var(--accent); }

.multi-chart-close {
    width: 25px;
    height: 25px;
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-muted);
    background: transparent;
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
}

.multi-chart-close:hover { color: #fecaca; border-color: rgba(239,83,80,.32); background: rgba(239,83,80,.1); }

.multi-chart-body {
    flex: 1 1 auto;
    min-height: 0;
    position: relative;
    display: flex;
    overflow: hidden;
}

.multi-chart-stage {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    position: relative;
}

.multi-chart-view,
.multi-range-heatmap,
.multi-v827-resistance-overlay,
.multi-chart-drawing-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.multi-chart-view { z-index: 2; }
.multi-range-heatmap { z-index: 1; pointer-events: none; }
.multi-v827-resistance-overlay { z-index: 3; pointer-events: none; }
.multi-chart-drawing-overlay {
    z-index: 4;
    pointer-events: none;
}
.multi-chart-drawing-overlay.is-drawing {
    pointer-events: auto;
    cursor: crosshair;
    touch-action: none;
}
.multi-chart-drawing-overlay.is-editing {
    pointer-events: auto;
    cursor: move;
    touch-action: none;
}

.multi-chart-drawing-toolbar {
    position: absolute;
    z-index: 7;
    top: 8px;
    left: 8px;
    max-height: calc(100% - 16px);
    display: none;
    flex-direction: column;
    gap: 3px;
    padding: 5px;
    overflow-y: auto;
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 7px;
    background: rgba(15, 19, 30, 0.92);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
    scrollbar-width: none;
    backdrop-filter: blur(5px);
}
.multi-chart-drawing-toolbar::-webkit-scrollbar { display: none; }
.multi-chart-cell.active.has-stock .multi-chart-drawing-toolbar { display: flex; }
.drawing-toolbar-toggle { display: none; }
.drawing-toolbar-tools {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.multi-chart-grid[data-grid-size="2"] .multi-chart-drawing-toolbar,
.multi-chart-grid[data-grid-size="3"] .multi-chart-drawing-toolbar {
    top: auto;
    right: 5px;
    bottom: 5px;
    left: 5px;
    max-height: none;
}
.multi-chart-grid[data-grid-size="2"] .drawing-toolbar-tools,
.multi-chart-grid[data-grid-size="3"] .drawing-toolbar-tools {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
}
.multi-chart-grid[data-grid-size="2"] .drawing-tool,
.multi-chart-grid[data-grid-size="3"] .drawing-tool {
    width: 26px;
    height: 26px;
    flex: 0 0 26px;
}
.multi-chart-grid[data-grid-size="2"] .drawing-tool-divider,
.multi-chart-grid[data-grid-size="3"] .drawing-tool-divider {
    width: 1px;
    height: 20px;
    margin: 3px 2px;
    flex: 0 0 1px;
}

.multi-range-profile {
    display: block;
    flex: 0 0 var(--multi-profile-width);
    width: var(--multi-profile-width);
    height: 100%;
    border-left: 1px solid rgba(255, 132, 0, 0.18);
    background: var(--bg-panel);
    pointer-events: none;
}

.multi-chart-grid.range-profile-hidden .multi-range-profile { display: none; }

.multi-chart-empty,
.multi-chart-loading {
    position: absolute;
    inset: 0;
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    color: var(--text-muted);
    background: rgba(15, 19, 30, 0.88);
    text-align: center;
    pointer-events: none;
}

.multi-chart-empty strong { color: var(--text-secondary); font-size: 13px; }
.multi-chart-empty span { max-width: 250px; font-size: 10.5px; }
.multi-chart-loading .spinner { width: 24px; height: 24px; }
.multi-chart-loading span { font-size: 10.5px; }
.multi-chart-empty[hidden], .multi-chart-loading[hidden] { display: none; }

.multi-chart-grid[data-grid-size="3"] .multi-chart-header {
    min-height: 35px;
    flex-basis: 35px;
    padding: 3px 5px 3px 7px;
}

.multi-chart-grid[data-grid-size="3"] .multi-chart-name { font-size: 11px; }
.multi-chart-grid[data-grid-size="3"] .multi-chart-code,
.multi-chart-grid[data-grid-size="3"] .multi-chart-price { display: none; }
.multi-chart-grid[data-grid-size="3"] .multi-timeframe { min-width: 21px; height: 21px; padding: 0 3px; font-size: 9px; }
.multi-chart-grid[data-grid-size="3"] .multi-chart-close { width: 21px; height: 21px; }

.multi-search-stock { cursor: grab; }

@media (max-width: 1180px) {
    .market-tickers { display: none; }
    .multi-stock-panel { width: 270px; flex-basis: 270px; }
    .multi-chart-main { gap: 8px; padding: 8px; }
    .multi-chart-grid[data-grid-size="2"] .multi-chart-code,
    .multi-chart-grid[data-grid-size="2"] .multi-chart-price { display: none; }
}

@media (max-width: 820px) {
    .dashboard-header { padding: 0 10px; }
    .header-status .time-display { display: none; }
    .main-nav .nav-link { padding: 5px 8px; font-size: 11px; }
    .multi-stock-panel { width: 220px; flex-basis: 220px; }
    .multi-stock-table .col-price,
    .multi-stock-table .col-change { display: none; }
    .multi-workspace-toolbar { padding: 7px 9px; }
    .layout-controls > span { display: none; }
}

@media (max-width: 768px) {
    .multi-chart-main {
        flex: 0 0 auto;
        min-height: 0;
        flex-direction: column;
        gap: 10px;
        padding: 10px;
        overflow: visible;
    }

    .multi-stock-panel {
        width: 100%;
        flex: 0 0 auto;
        min-height: 0;
    }

    .multi-stock-panel .panel-header { min-height: 48px; }
    .multi-stock-panel .list-container {
        height: clamp(240px, 34dvh, 340px);
        max-height: none;
        overscroll-behavior: contain;
    }

    .multi-drag-hint-desktop { display: none; }
    .multi-drag-hint-mobile { display: block; }
    .multi-stock-table tbody tr,
    .multi-stock-table tbody tr:active,
    .multi-search-stock { cursor: pointer; }

    .multi-stock-panel.mobile-stock-collapsed { min-height: 0; }

    .multi-workspace {
        width: 100%;
        height: max(66dvh, 520px);
        min-height: 520px;
        flex: 0 0 auto;
        scroll-margin-top: 104px;
    }

    .multi-workspace-toolbar {
        min-height: 54px;
        flex-basis: 54px;
        padding: 7px 10px;
    }

    .profile-toggle-button,
    .layout-button,
    .workspace-fullscreen-button {
        min-width: 48px;
        height: 44px;
        font-size: 12px;
    }

    .profile-toggle-button { min-width: 72px; }
    .v827-toggle-button { min-width: 82px; }
    .workspace-fullscreen-button { display: inline-flex; min-width: 62px; }

    .layout-button[data-grid-size="1"],
    .layout-button[data-grid-size="2"],
    .layout-button[data-grid-size="3"] { display: none; }

    .multi-chart-grid {
        --multi-profile-width: 56px;
        gap: 6px;
        padding: 6px;
    }

    .multi-chart-header {
        min-height: 94px;
        flex: 0 0 94px;
        flex-direction: column;
        align-items: stretch;
        justify-content: center;
        gap: 7px;
        padding: 7px 8px;
    }

    .multi-chart-symbol { min-height: 24px; }
    .multi-chart-name { font-size: 13px; }
    .multi-chart-actions { width: 100%; gap: 6px; }
    .multi-timeframes { flex: 1 1 auto; gap: 2px; }
    .multi-timeframe {
        min-width: 44px;
        height: 44px;
        flex: 1 1 0;
        padding: 0 4px;
        font-size: 11px;
    }
    .multi-chart-close {
        width: 44px;
        height: 44px;
        flex: 0 0 44px;
    }

    .multi-chart-drawing-toolbar {
        top: 8px;
        right: auto;
        bottom: auto;
        left: 8px;
        max-height: none;
        flex-direction: row;
        align-items: center;
        padding: 4px;
        overflow: visible;
        border-radius: 10px;
    }
    .drawing-toolbar-toggle {
        min-width: 88px;
        height: 40px;
        padding: 0 9px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        flex: 0 0 auto;
        border: 0;
        border-radius: 7px;
        color: #c5d1e2;
        background: rgba(41, 98, 255, 0.1);
        font: 650 11px/1 Inter, sans-serif;
        cursor: pointer;
        touch-action: manipulation;
    }
    .drawing-toolbar-toggle-pen { width: 17px; height: 17px; color: #86a7ff; }
    .drawing-toolbar-toggle-chevron { width: 14px; height: 14px; color: #71829a; transition: transform 160ms ease; }
    .drawing-toolbar-tools { display: none; min-width: 0; }
    .multi-chart-drawing-toolbar.is-expanded {
        top: auto;
        right: 8px;
        bottom: 8px;
        border-color: rgba(96, 165, 250, 0.32);
    }
    .multi-chart-drawing-toolbar.is-expanded .drawing-toolbar-toggle {
        min-width: 42px;
        width: 42px;
        padding: 0;
    }
    .multi-chart-drawing-toolbar.is-expanded .drawing-toolbar-toggle span { display: none; }
    .multi-chart-drawing-toolbar.is-expanded .drawing-toolbar-toggle-chevron { transform: rotate(180deg); }
    .multi-chart-drawing-toolbar.is-expanded .drawing-toolbar-tools {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        overscroll-behavior-x: contain;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }
    .multi-chart-drawing-toolbar.is-expanded .drawing-toolbar-tools::-webkit-scrollbar { display: none; }
}

@media (max-width: 480px) {
    .multi-chart-main { padding: 8px; }
    .multi-workspace { height: max(68dvh, 500px); min-height: 500px; }
    .multi-chart-grid { --multi-profile-width: 48px; padding: 5px; }
    .multi-chart-code { display: none; }
    .multi-chart-price { margin-left: auto; }
}

@media (max-width: 380px) {
    .workspace-fullscreen-button { min-width: 44px; padding-inline: 8px; }
    .workspace-fullscreen-label { display: none; }
}