:root{
    --bg: #000000;
    --bg-soft: #050505;
    --surface: #0a0a0a;
    --surface-2: #121212;
    --surface-3: #171717;

    --accent: #0071e3;
    --accent-soft: rgba(0,113,227,0.16);
    --accent-glow: rgba(0,113,227,0.30);

    --text: #f5f5f7;
    --text-soft: #c7c7cc;
    --text-dim: #86868b;

    --green: #30d158;
    --red: #ff453a;
    --cyan: #64d2ff;
    --gold: #d4af37;

    --border: rgba(255,255,255,0.14);
    --border-soft: rgba(255,255,255,0.08);
    --hairline: rgba(255,255,255,0.05);

    --glass: saturate(180%) blur(18px);

    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --radius-pill: 999px;

    --shadow-soft: 0 20px 60px rgba(0,0,0,0.38);
    --shadow-elev: 0 24px 80px rgba(0,0,0,0.52);
    --shadow-focus: 0 0 0 3px rgba(0,113,227,0.16);
}

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html,
body{
    width: 100%;
    min-height: 100%;
    overflow-x: hidden;
    font-family: "Inter", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top center, rgba(255,255,255,0.04), transparent 22%),
        radial-gradient(circle at 20% 0%, rgba(0,113,227,0.08), transparent 18%),
        linear-gradient(180deg, #050505 0%, #000000 100%);
}

body{
    min-height: 100vh;
}

/* subtle industrial grid */
body::before{
    content:"";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.08;
    background-image:
        linear-gradient(rgba(255,255,255,0.10) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.10) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(circle at center, black, transparent 85%);
}

/* ===== GRID ===== */

.tsap-grid{
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 78px minmax(0,1fr) minmax(0,1fr);
    grid-template-rows: 64px minmax(0,1fr) 96px;
    gap: 10px;
    padding: 10px;
    height: 100vh;
    width: 100%;
}

/* ===== COMMON SURFACES ===== */

.topbar,
.sidebar,
.panel-shell,
.bottompanel,
.floating-panel{
    background:
        linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.01)),
        linear-gradient(180deg, rgba(10,10,10,0.94), rgba(4,4,4,0.96));
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
}

/* ===== TOPBAR ===== */

.topbar{
    grid-column: 1 / 4;
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    border-radius: 18px;
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    position: relative;
    z-index: 1000;
}

.topbar-left,
.topbar-right{
    display: flex;
    align-items: center;
}

.topbar-right{
    flex: 1;
    justify-content: flex-end;
    min-width: 0;
}

.logo-link{
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.terminal-title{
    font-family: "Manrope", sans-serif;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text);
}

.terminal-title span{
    color: var(--accent);
    text-shadow: 0 0 18px rgba(0,113,227,0.18);
}

.topbar-action-group{
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */

button,
.topbar-link-btn{
    appearance: none;
    border: 1px solid rgba(255,255,255,0.10);
    background: linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.02));
    color: var(--text-soft);
    min-height: 36px;
    padding: 0 14px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition:
        background 0.18s ease,
        border-color 0.18s ease,
        color 0.18s ease,
        box-shadow 0.18s ease,
        transform 0.18s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

button:hover,
.topbar-link-btn:hover{
    color: var(--text);
    border-color: rgba(255,255,255,0.18);
    background: linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.03));
    transform: translateY(-1px);
}

button:active,
.topbar-link-btn:active{
    transform: translateY(0);
}

button:focus-visible,
.topbar-link-btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible{
    outline: none;
    box-shadow: var(--shadow-focus);
}

.btn-primary{
    background: linear-gradient(180deg, #0a84ff 0%, #0071e3 100%);
    border: 1px solid rgba(0,113,227,0.55);
    color: white;
    font-weight: 700;
    box-shadow: 0 0 22px rgba(0,113,227,0.18);
}

.btn-primary:hover{
    background: linear-gradient(180deg, #2994ff 0%, #0071e3 100%);
    color: white;
    border-color: rgba(0,113,227,0.75);
}

.topbar-link-btn{
    background: white;
    color: black;
    border: 1px solid rgba(255,255,255,0.9);
    font-weight: 700;
}

.topbar-link-btn:hover{
    background: #f5f5f7;
    color: black;
}

/* premium topbar button styling */
#marketDataBtn,
#tradebookBtn,
#sync,
#syncCharts,
#fullscreenBtn{
    border-color: rgba(255,255,255,0.10);
    color: var(--text-soft);
}

#marketDataBtn:hover,
#tradebookBtn:hover,
#sync:hover,
#syncCharts:hover,
#fullscreenBtn:hover{
    color: var(--text);
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.20);
}

#marketDataBtn.active,
#tradebookBtn.active,
#sync.active,
#syncCharts.active,
#fullscreenBtn.active{
    background: rgba(0,113,227,0.14);
    color: #e6f2ff;
    border-color: rgba(0,113,227,0.46);
    box-shadow: 0 0 18px rgba(0,113,227,0.10);
}

/* destructive action stays neutral but focused */
#clearDrawings{
    border-color: rgba(255,255,255,0.10);
    color: var(--text-soft);
}

#clearDrawings:hover{
    color: #ffffff;
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.20);
}

#clearDrawings:focus-visible{
    box-shadow: 0 0 0 3px rgba(255,69,58,0.14);
}

/* ===== SIDEBAR ===== */

.sidebar{
    grid-row: 2 / 3;
    border-radius: 22px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: auto;
}

.tool-btn{
    width: 100%;
    min-height: 42px;
    border-radius: 14px;
    background: rgba(255,255,255,0.03);
    color: var(--text-soft);
    border: 1px solid var(--border-soft);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition:
        background 0.18s ease,
        border-color 0.18s ease,
        color 0.18s ease,
        box-shadow 0.18s ease,
        transform 0.18s ease;
}

.tool-btn:hover{
    transform: none;
    color: var(--text);
    background: rgba(255,255,255,0.055);
    border-color: rgba(255,255,255,0.18);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}

.tool-btn:active{
    background: rgba(255,255,255,0.04);
}

.tool-btn-accent{
    background: rgba(0,113,227,0.10);
    color: #dcebff;
    border-color: rgba(0,113,227,0.32);
    box-shadow: inset 0 0 0 1px rgba(0,113,227,0.08);
}

.tool-btn-accent:hover{
    color: #ffffff;
    background: rgba(0,113,227,0.16);
    border-color: rgba(0,113,227,0.48);
    box-shadow:
        inset 0 0 0 1px rgba(0,113,227,0.10),
        0 0 18px rgba(0,113,227,0.10);
}

.tool-btn.active,
.topbar-action-group button.active{
    background: rgba(0,113,227,0.14);
    color: #e6f2ff;
    border-color: rgba(0,113,227,0.48);
    box-shadow: 0 0 18px rgba(0,113,227,0.12);
}

/* ===== CHARTS ===== */

.chart-left,
.chart-right{
    position: relative;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    border-radius: 24px;
    background:
        linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)),
        linear-gradient(180deg, #080808 0%, #020202 100%);
}

.chart-left:hover,
.chart-right:hover{
    border-color: rgba(255,255,255,0.18);
    box-shadow:
        0 20px 50px rgba(0,0,0,0.34),
        0 0 0 1px rgba(255,255,255,0.05);
}

.chart-header{
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 5;
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    background: rgba(0,0,0,0.72);
    border: 1px solid rgba(255,255,255,0.10);
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.chartbox{
    width: 100%;
    height: 100%;
}

/* ===== DROP ZONE ===== */

.drop-zone{
    position: absolute;
    inset: 0;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.84);
    border: 2px dashed rgba(0,113,227,0.65);
    color: #cfe6ff;
    font-family: "Manrope", sans-serif;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    opacity: 0;
    pointer-events: none;
    transition: opacity .18s ease;
}

.chart-left.dragover .drop-zone,
.chart-right.dragover .drop-zone{
    opacity: 1;
    pointer-events: auto;
}

/* ===== BOTTOM PANEL ===== */

.bottompanel{
    grid-column: 1 / 4;
    border-radius: 22px;
    padding: 14px;
    display: flex;
    align-items: center;
}

.metrics{
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 12px;
}

.metric-card{
    min-height: 68px;
    padding: 14px 16px;
    border-radius: 18px;
    background:
        linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
    border: 1px solid var(--border-soft);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
}

.metric-label{
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-dim);
}

.metric-value{
    font-family: "Manrope", sans-serif;
    font-size: 20px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
}

.metric-green{ color: var(--green); }
.metric-blue{ color: #8cc7ff; }
.metric-cyan{ color: var(--cyan); }
.metric-red{ color: #ff8d85; }

/* ===== FLOATING PANELS ===== */

.floating-panel{
    display: none;
    position: fixed;
    top: 110px;
    left: 200px;
    width: 330px;
    max-width: calc(100vw - 20px);
    max-height: calc(100vh - 140px);
    overflow-x: hidden;
    overflow-y: auto;
    border-radius: 24px;
    z-index: 2000;
    background:
        linear-gradient(180deg, rgba(18,18,18,0.96), rgba(5,5,5,0.98));
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    box-shadow: var(--shadow-elev);
}

/* wider, more horizontal panels */
.tradebook-panel{
    width: 760px;
}

.marketdata-panel{
    width: 760px;
}

.strategy-panel{
    width: 820px;
    max-width: calc(100vw - 20px);
}

.panel-header{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    cursor: move;
    border-bottom: 1px solid var(--border-soft);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
    font-family: "Manrope", sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text);
    position: sticky;
    top: 0;
    z-index: 2;
}

.close-btn{
    width: 28px;
    height: 28px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--red);
    cursor: pointer;
    transition: .2s ease;
}

.close-btn:hover{
    background: rgba(255,69,58,0.12);
    color: white;
}

/* horizontal control-surface panel layout */
.panel-body{
    padding: 16px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 16px 14px;
    align-items: start;
}

.full-span{
    grid-column: 1 / -1;
}

.panel-body hr{
    border: none;
    border-top: 1px solid var(--hairline);
    margin: 2px 0 4px;
    grid-column: 1 / -1;
}

.panel-body label{
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.panel-body input,
.panel-body select{
    width: 100%;
    height: 34px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid var(--border-soft);
    background: rgba(255,255,255,0.03);
    color: var(--text);
    font-size: 12px;
    transition: .18s ease;
}

.panel-body input::placeholder{
    color: var(--text-dim);
}

.panel-body input:focus,
.panel-body select:focus{
    border-color: rgba(0,113,227,0.55);
    background: rgba(255,255,255,0.05);
}

.panel-body button{
    min-height: 36px;
}

#applyEMA,
#applyDrawingSettings{
    background: linear-gradient(180deg, #0a84ff 0%, #0071e3 100%);
    border: 1px solid rgba(0,113,227,0.48);
    color: white;
    font-weight: 700;
}

#applyEMA:hover,
#applyDrawingSettings:hover{
    color: white;
}

.danger-soft{
    background: rgba(255,69,58,0.08);
    color: #ffb0a9;
    border-color: rgba(255,69,58,0.22);
}

.danger-soft:hover{
    background: rgba(255,69,58,0.15);
    color: white;
    border-color: rgba(255,69,58,0.42);
}

.tradebook-actions,
.marketdata-actions{
    display: flex;
    gap: 10px;
    margin-top: 2px;
}

.tradebook-actions button,
.marketdata-actions button{
    flex: 1;
}

.tradebook-date-note{
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid var(--border-soft);
    background: rgba(255,255,255,0.02);
    color: var(--text-dim);
    font-size: 12px;
    line-height: 1.55;
}

.tradebook-date-note strong{
    color: var(--text-soft);
}

.tradebook-status{
    min-height: 18px;
    font-size: 12px;
    color: var(--text-dim);
    margin-top: 0;
}

/* ===== FILTER / TOGGLE SYSTEM ===== */

.filter-block{
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.filter-head-row{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 2px;
}

.toggle-group,
.segmented-group,
.strategy-group{
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.toggle-chip,
.segment-btn{
    appearance: none;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.03);
    color: var(--text-soft);
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.18s ease;
}

.toggle-chip:hover,
.segment-btn:hover{
    color: var(--text);
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.18);
}

.toggle-chip.active,
.segment-btn.active{
    background: rgba(0,113,227,0.14);
    color: #e6f2ff;
    border-color: rgba(0,113,227,0.42);
    box-shadow: 0 0 18px rgba(0,113,227,0.10);
}

.active-filter-box{
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid var(--border-soft);
    background: rgba(255,255,255,0.02);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.active-filter-title{
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.active-filter-chips{
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 20px;
}

.active-chip{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 30px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.10);
    color: var(--text-soft);
    font-size: 11px;
    font-weight: 600;
}

.active-chip button{
    min-height: auto;
    height: 18px;
    width: 18px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-dim);
    border-radius: 50%;
    font-size: 12px;
}

.active-chip button:hover{
    color: white;
    background: rgba(255,255,255,0.08);
    transform: none;
}

.mini-action-btn{
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.03);
    color: var(--text-soft);
}

.mini-action-btn:hover{
    color: var(--text);
    border-color: rgba(255,255,255,0.20);
    background: rgba(255,255,255,0.06);
}

/* ===== STRATEGY PANEL ===== */

.panel-textarea{
    width: 100%;
    min-height: 92px;
    padding: 12px;
    border-radius: 14px;
    border: 1px solid var(--border-soft);
    background: rgba(255,255,255,0.03);
    color: var(--text);
    font-size: 13px;
    font-family: "Inter", sans-serif;
    resize: vertical;
    outline: none;
    transition: .18s ease;
}

.panel-textarea::placeholder{
    color: var(--text-dim);
}

.panel-textarea:focus{
    border-color: rgba(0,113,227,0.55);
    background: rgba(255,255,255,0.05);
    box-shadow: var(--shadow-focus);
}

.strategy-preview-box{
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid var(--border-soft);
    background: rgba(255,255,255,0.02);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.strategy-preview-text{
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.55;
}

/* ===== FULLSCREEN ===== */

.tsap-grid:fullscreen{
    width: 100%;
    height: 100vh;
}

/* ===== RESPONSIVE ===== */

@media (min-width: 1400px){
    .tradebook-panel,
    .marketdata-panel,
    .strategy-panel{
        width: 920px;
    }

    .strategy-panel .panel-body{
        grid-template-columns: repeat(3, minmax(0,1fr));
    }
}

@media (max-width: 1200px){
    .topbar{
        min-height: auto;
        padding: 12px 14px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .topbar-right{
        width: 100%;
        justify-content: flex-start;
    }

    .topbar-action-group{
        justify-content: flex-start;
    }

    .tradebook-panel,
    .marketdata-panel,
    .strategy-panel{
        width: min(760px, calc(100vw - 20px));
    }
}

@media (max-width: 900px){
    .tsap-grid{
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 42vh 42vh auto;
        height: auto;
        min-height: 100vh;
    }

    .topbar{
        grid-column: 1 / 2;
    }

    .topbar-action-group{
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0,1fr));
        gap: 8px;
    }

    .topbar-action-group button,
    .topbar-link-btn{
        width: 100%;
    }

    .sidebar{
        grid-column: 1 / 2;
        flex-direction: row;
        flex-wrap: wrap;
        overflow-x: auto;
    }

    .sidebar .tool-btn{
        width: auto;
        min-width: 82px;
        flex: 0 0 auto;
    }

    .chart-left,
    .chart-right,
    .bottompanel{
        grid-column: 1 / 2;
    }

    .chart-left,
    .chart-right{
        min-height: 42vh;
    }

    .metrics{
        grid-template-columns: repeat(2, minmax(0,1fr));
    }

    .panel-body{
        grid-template-columns: 1fr;
    }

    .full-span{
        grid-column: auto;
    }
}

@media (max-width: 600px){
    .tsap-grid{
        gap: 6px;
        padding: 6px;
        grid-template-rows: auto auto 38vh 38vh auto;
    }

    .terminal-title{
        font-size: 18px;
    }

    .topbar{
        padding: 10px;
        border-radius: 16px;
    }

    .topbar-action-group{
        grid-template-columns: 1fr;
    }

    .sidebar{
        border-radius: 16px;
    }

    .chart-left,
    .chart-right,
    .bottompanel{
        border-radius: 16px;
    }

    .metrics{
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .metric-card{
        padding: 12px;
    }

    .metric-value{
        font-size: 17px;
    }

    .chart-header{
        top: 8px;
        left: 8px;
        font-size: 10px;
        padding: 0 10px;
        min-height: 28px;
    }

    .drop-zone{
        font-size: 16px;
    }

    .floating-panel{
        width: calc(100vw - 20px) !important;
        max-height: calc(100vh - 100px);
        left: 50% !important;
        transform: translateX(-50%);
        top: 84px;
    }

    .toggle-chip,
    .segment-btn{
        min-height: 32px;
        font-size: 11px;
        padding: 0 10px;
    }

    .panel-body{
        padding: 14px;
        gap: 14px 12px;
    }
}

.dataset-meta-panel {
    display: grid;
    gap: 8px;
    min-width: 320px;
    max-width: 420px;
    color: #eaeaea;
    font-size: 13px;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.meta-label {
    color: #9aa0a6;
    font-weight: 500;
}

.panel-action-select{
    height: 38px;
    width: auto;              /* remove stretching */
    max-width: 160px;         /* limit width */
    padding: 0 10px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.10);
    background: #0f0f10;
    color: #eaeaea;
    font: inherit;
    outline: none;
    cursor: pointer;
    flex: 0 0 auto;           /* prevent flex stretching */
}

.panel-action-select:focus{
    border-color: rgba(0, 200, 255, 0.55);
    box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.12);
}