*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #090a09;
    --panel: #11120f;
    --panel-2: #171813;
    --panel-3: #21221b;
    --plot: #070807;
    --line: #2a2d27;
    --line-strong: #45493f;
    --text: #f2f3ed;
    --muted: #aeb5aa;
    --dim: #737b70;
    --pinn: #34d399;
    --verlet: #f97316;
    --error: #ef4444;
    --energy: #a78bfa;
    --momentum: #fbbf24;
    --accent: #38bdf8;
    --warn: #fbbf24;
    --radius: 4px;
    --font-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", "Consolas", monospace;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    background:
        linear-gradient(90deg, rgba(69,73,63,0.08) 1px, transparent 1px),
        linear-gradient(rgba(69,73,63,0.06) 1px, transparent 1px),
        var(--bg);
    background-size: 96px 96px, 96px 96px, auto;
    color: var(--text);
    font-family: var(--font-ui);
    -webkit-font-smoothing: antialiased;
}

button,
select,
input {
    font: inherit;
}

button,
select {
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--panel-2);
    color: var(--text);
}

button {
    min-height: 30px;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
}

.btn-primary {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.btn-primary:hover {
    background: var(--muted);
    border-color: var(--muted);
}

.btn-secondary:hover {
    border-color: var(--muted);
    background: var(--panel-3);
}

select {
    min-height: 32px;
    padding: 4px 10px;
    outline: none;
    font-size: 0.85rem;
}

.hidden {
    display: none !important;
}

.boot-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    transition: opacity 220ms ease, visibility 220ms ease;
}

.boot-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
}

.boot-container {
    width: min(480px, calc(100vw - 32px));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    padding: 24px;
}

.boot-logo,
.panel-kicker,
.status-dot + span,
.mode-tab,
.metric-card span,
label,
th,
td,
footer,
.source-badge,
.provenance-tag {
    font-family: var(--font-mono);
}

.boot-logo {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.boot-subtitle {
    margin-top: 4px;
    color: var(--dim);
    font-size: 0.75rem;
}

.boot-log {
    min-height: 96px;
    margin-top: 24px;
    color: var(--muted);
    font-size: 0.75rem;
    line-height: 1.8;
}

.boot-log .log-line {
    opacity: 0;
    animation: fade-in 150ms ease forwards;
}

.boot-log .log-line::before {
    content: "> ";
    color: var(--dim);
}

.boot-log .success { color: var(--pinn); }
.boot-log .accent { color: var(--accent); }

.boot-progress {
    height: 2px;
    margin-top: 24px;
    overflow: hidden;
    background: var(--panel-3);
}

.boot-progress-bar {
    width: 0%;
    height: 100%;
    background: var(--accent);
    transition: width 160ms ease;
}

.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr) 140px;
    align-items: center;
    gap: 18px;
    padding: 10px 16px 10px 20px;
    border-bottom: 1px solid var(--line);
    background:
        linear-gradient(180deg, rgba(242,243,237,0.03), transparent),
        var(--panel);
}

.brand .eyebrow,
.panel-kicker {
    color: var(--dim);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.brand h1 {
    margin-top: 4px;
    font-size: 1.15rem;
    font-weight: 600;
}

.mode-tabs {
    min-width: 0;
    display: flex;
    justify-content: center;
    gap: 2px;
    overflow-x: auto;
    scrollbar-width: thin;
}

.mode-tab {
    position: relative;
    flex: 0 0 auto;
    min-width: 118px;
    color: var(--muted);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 2px;
    text-align: center;
}

.mode-tab:hover {
    color: var(--text);
    background: var(--panel-2);
}

.mode-tab.active {
    color: var(--text);
    background: #1b1c17;
    border-color: var(--line-strong);
}

.mode-tab::before {
    color: var(--dim);
    margin-right: 6px;
}

.mode-tab:nth-child(1)::before { content: "F1"; }
.mode-tab:nth-child(2)::before { content: "F2"; }
.mode-tab:nth-child(3)::before { content: "F3"; }
.mode-tab:nth-child(4)::before { content: "F4"; }

.system-status {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    min-width: 122px;
    color: var(--pinn);
    font-size: 0.75rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.system-status.loading { color: var(--accent); }
.system-status.warning { color: var(--warn); }
.system-status.error { color: var(--error); }

.model-notice {
    padding: 8px 20px;
    border-bottom: 1px solid #713f12;
    background: #422006;
    color: #fde047;
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

main {
    flex: 1;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

.lab-layout,
.surrogate-layout,
.live-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 1px;
    background: var(--line);
}

.orbit-workbench,
.autopsy-panel,
.text-panel,
.chart-panel,
.metric-card {
    min-width: 0;
    background: var(--panel);
}

.workbench-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    min-height: 56px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    background:
        linear-gradient(90deg, rgba(52,211,153,0.055), transparent 34%),
        var(--panel);
}

.header-content h2,
.workbench-header h2,
.autopsy-header h2,
.text-panel h2 {
    margin-top: 4px;
    font-size: 0.95rem;
    font-weight: 600;
}

.board-toggles {
    display: flex;
    gap: 16px;
}

.trace-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.66rem;
}

.chip {
    border: 1px solid var(--line-strong);
    padding: 2px 7px;
    color: var(--muted);
    background: rgba(0,0,0,0.14);
}

.chip::before {
    content: "";
    display: inline-block;
    width: 14px;
    height: 2px;
    margin-right: 6px;
    vertical-align: middle;
    background: currentColor;
}

.chip-pinn { color: var(--pinn); }
.chip-verlet { color: var(--verlet); }
.chip-error { color: var(--error); }

.board-toggles label,
.control-row label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--dim);
    font-size: 0.75rem;
    cursor: pointer;
}

.canvas-container {
    position: relative;
    width: 100%;
    background: var(--plot);
    background-image: 
        linear-gradient(rgba(69,73,63,0.20) 1px, transparent 1px),
        linear-gradient(90deg, rgba(69,73,63,0.20) 1px, transparent 1px),
        radial-gradient(rgba(242,243,237,0.07) 1px, transparent 1px);
    background-size: 32px 32px;
    background-position: 0 0, 0 0, 16px 16px;
}

#orbit-board,
#live-board,
#surrogate-board {
    display: block;
    width: 100%;
    height: min(65vh, 720px);
    min-height: 480px;
}

.provenance-strip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-top: 1px solid var(--line);
    background: var(--panel-2);
    font-size: 0.72rem;
    color: var(--dim);
}

.provenance-tag {
    color: var(--muted);
    background: var(--panel-3);
    padding: 2px 6px;
    border-radius: 2px;
}

.autopsy-panel {
    display: flex;
    flex-direction: column;
    padding: 16px;
    border-left: 1px solid var(--line);
    background:
        linear-gradient(90deg, rgba(251,191,36,0.035), transparent 48%),
        var(--panel);
}

.control-row {
    display: grid;
    gap: 8px;
    margin-bottom: 24px;
}

.autopsy-header {
    margin-bottom: 16px;
}

.autopsy-header p,
.diagnosis-card p,
.text-panel p {
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

.incident-timeline {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    margin-left: 0;
    padding-left: 0;
}

.autopsy-step {
    position: relative;
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    width: 100%;
    min-height: 54px;
    padding: 8px 10px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    text-align: left;
    cursor: pointer;
}

.autopsy-step::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    border-radius: 0;
    background: var(--line-strong);
    border: 0;
}

.autopsy-step:hover .step-name {
    color: var(--text);
}

.autopsy-step.active::before {
    background: var(--accent);
}

.autopsy-step.active .step-name {
    color: var(--accent);
}

.step-name {
    display: block;
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 500;
}

.step-index {
    color: var(--dim);
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.step-status {
    display: block;
    color: var(--dim);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    margin-top: 2px;
}

.scrubber-block,
.diagnosis-card,
.slider-stack,
.latency-panel {
    border: 1px solid var(--line);
    background: var(--panel-2);
    padding: 14px;
    margin-bottom: 16px;
}

.latency-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.latency-header .btn-primary {
    min-height: 24px;
    padding: 4px 8px;
    font-size: 0.7rem;
}

.scrubber-meta,
.play-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

#phase-scrubber {
    width: 100%;
    margin: 14px 0;
    accent-color: var(--accent);
}

.play-row {
    justify-content: flex-start;
    gap: 8px;
}

.source-badge {
    display: inline-flex;
    margin-top: 12px;
    border: 1px solid var(--line-strong);
    padding: 2px 6px;
    color: var(--dim);
    font-size: 0.7rem;
}

.source-badge.measured { color: var(--pinn); border-color: color-mix(in srgb, var(--pinn) 40%, var(--line)); }
.source-badge.pending { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--line)); }
.source-badge.research { color: var(--error); border-color: color-mix(in srgb, var(--error) 40%, var(--line)); }

.diagnostics-strip {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border-top: 1px solid var(--line);
}

.metric-card {
    padding: 12px 16px;
}

.metric-card span {
    display: block;
    color: var(--dim);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.metric-card strong {
    display: block;
    margin-top: 4px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.95rem;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border-top: 1px solid var(--line);
}

.chart-panel {
    padding: 16px;
}

.chart-panel canvas {
    display: block;
    width: 100%;
    height: 120px;
    margin-top: 8px;
    border: 1px solid var(--line);
    background: var(--bg);
}

.text-panel {
    margin: 20px;
    border: 1px solid var(--line);
    padding: 20px;
}

.live-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    margin-top: 16px;
    background: var(--line);
}

.live-grid div {
    background: var(--panel-2);
    padding: 12px;
}

.live-grid span {
    display: block;
    color: var(--dim);
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.live-grid strong {
    display: block;
    margin-top: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.slider-stack label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
}

.slider-stack strong {
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.slider-stack input {
    width: 100%;
    accent-color: var(--accent);
    margin-bottom: 12px;
}
.slider-stack input:last-child { margin-bottom: 0; }

.latency-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    margin-top: 12px;
    border: 1px solid var(--line);
}

.latency-grid div {
    background: var(--panel);
    padding: 10px;
}

.latency-grid span {
    display: block;
    color: var(--dim);
    font-family: var(--font-mono);
    font-size: 0.65rem;
}

.latency-grid strong {
    display: block;
    margin-top: 4px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.model-card-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
}

table {
    width: 100%;
    margin-top: 16px;
    border-collapse: collapse;
}

th, td {
    border-top: 1px solid var(--line);
    padding: 8px;
    vertical-align: top;
    text-align: left;
    font-size: 0.8rem;
}

th {
    width: 140px;
    color: var(--dim);
    font-weight: 400;
}

td {
    color: var(--text);
    font-family: var(--font-mono);
}

.metrics-table {
    margin-top: 12px;
    display: grid;
    gap: 4px;
}

.metrics-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    border-bottom: 1px solid var(--line);
    padding: 8px 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
}
.metrics-row:last-child { border-bottom: none; }

.metrics-row span, .metrics-row td:first-child { color: var(--dim); }
.metrics-row strong, .metrics-row td:last-child { color: var(--text); text-align: right; }

.metrics-row.pass strong { color: var(--pinn); }
.metrics-row.warn strong { color: var(--warn); }
.metrics-row.fail strong { color: var(--error); }

.text-panel h3 {
    margin-top: 24px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
}

.model-card-note {
    margin-top: 20px;
    font-size: 0.8rem;
}

.surrogate-card-kicker {
    margin-top: 22px;
}

footer {
    display: flex;
    justify-content: space-between;
    padding: 12px 20px;
    border-top: 1px solid var(--line);
    background: var(--panel);
    color: var(--dim);
    font-size: 0.7rem;
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(2px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1050px) {
    .topbar,
    .lab-layout,
    .surrogate-layout,
    .live-layout,
    .model-card-layout,
    .chart-grid,
    .diagnostics-strip {
        grid-template-columns: 1fr;
    }

    .topbar {
        align-items: stretch;
        gap: 10px;
    }

    .mode-tabs {
        justify-content: flex-start;
        padding-bottom: 2px;
    }

    .autopsy-panel {
        order: -1;
        border-left: none;
        border-bottom: 1px solid var(--line);
    }

    .workbench-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .board-toggles {
        flex-wrap: wrap;
    }

    #orbit-board,
    #live-board,
    #surrogate-board {
        height: 520px;
        min-height: 360px;
    }
}

@media (max-width: 560px) {
    html,
    body,
    .app {
        max-width: 100vw;
        overflow-x: hidden;
    }

    .topbar {
        padding: 12px;
        max-width: 100vw;
    }

    .mode-tabs {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        overflow-x: visible;
        gap: 4px;
        justify-content: stretch;
        width: 100%;
    }

    .mode-tab {
        min-width: 0;
        width: 100%;
        padding-inline: 6px;
        white-space: normal;
        overflow: hidden;
        font-size: 0;
    }

    .mode-tab::before {
        margin-right: 0;
        color: inherit;
        font-size: 0.72rem;
        line-height: 1.2;
    }

    .mode-tab:nth-child(1)::before { content: "F1 Failure"; }
    .mode-tab:nth-child(2)::before { content: "F2 Surrogate"; }
    .mode-tab:nth-child(3)::before { content: "F3 Orbit"; }
    .mode-tab:nth-child(4)::before { content: "F4 Card"; }

    select,
    input[type="range"] {
        max-width: 100%;
    }

    .autopsy-panel,
    .text-panel,
    .chart-panel,
    .metric-card {
        padding: 14px;
    }

    .diagnostics-strip,
    .latency-grid,
    .live-grid {
        grid-template-columns: 1fr 1fr;
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }

    .autopsy-header p,
    .diagnosis-card p,
    .quality-copy {
        overflow-wrap: anywhere;
    }
}