:root {
    color-scheme: dark;
    --bg: #101216;
    --panel: rgba(21, 24, 29, 0.96);
    --panel-soft: rgba(29, 33, 39, 0.84);
    --line: rgba(225, 232, 225, 0.15);
    --text: #f2f6f4;
    --muted: #aeb8b4;
    --accent: #49c7b8;
    --accent-2: #d7b45d;
    --ok: #61d394;
    --warn: #f4b860;
    --bad: #ff746d;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(180deg, #101216, #151618 58%, #101216);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
select,
input,
textarea {
    font: inherit;
}

button,
select,
input {
    min-height: 38px;
    border: 1px solid rgba(225, 232, 225, 0.18);
    border-radius: 7px;
    background: rgba(8, 10, 13, 0.82);
    color: var(--text);
}

button {
    padding: 8px 12px;
    font-weight: 900;
    cursor: pointer;
}

button:hover,
button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible,
.nav-link:hover,
.nav-link:focus-visible {
    border-color: rgba(73, 199, 184, 0.72);
    outline: none;
}

button[disabled] {
    cursor: not-allowed;
    opacity: 0.48;
}

.experiment-shell {
    width: min(1500px, 100%);
    margin: 0 auto;
    padding: clamp(14px, 2.4vw, 30px);
    display: grid;
    gap: 16px;
}

.experiment-topbar {
    display: grid;
    grid-template-columns: minmax(150px, auto) minmax(360px, 1fr) minmax(150px, 220px);
    gap: 16px;
    align-items: start;
}

.topbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-width: 0;
    align-items: flex-start;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 150px;
    min-height: 38px;
    padding: 8px 12px;
    border: 1px solid rgba(225, 232, 225, 0.2);
    border-radius: 7px;
    color: var(--text);
    background: rgba(8, 10, 13, 0.82);
    text-decoration: none;
    font-weight: 900;
    text-align: center;
    overflow-wrap: anywhere;
}

.title-block {
    min-width: 0;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--accent-2);
    font-size: 12px;
    font-weight: 950;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    margin: 0;
    letter-spacing: 0;
}

h1 {
    font-size: clamp(28px, 3.2vw, 48px);
    line-height: 1.02;
    overflow-wrap: anywhere;
}

.title-block p:last-child {
    max-width: 820px;
    margin: 8px 0 0;
    color: var(--muted);
    line-height: 1.45;
}

.language-select,
.form-grid label,
.review-actions label {
    display: grid;
    gap: 6px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 900;
}

.language-select select,
.form-grid input,
.form-grid select,
.review-actions input {
    width: 100%;
    padding: 7px 9px;
}

.mode-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 6px;
    justify-content: start;
    width: min(100%, 720px);
    padding: 5px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(8, 10, 13, 0.54);
}

.mode-strip button {
    border-color: transparent;
    background: transparent;
    color: var(--muted);
}

.mode-strip button[aria-pressed="true"] {
    border-color: rgba(73, 199, 184, 0.58);
    background: rgba(73, 199, 184, 0.13);
    color: var(--text);
}

.mobile-player-panel {
    display: none;
}

.mobile-player-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.workflow-map {
    display: grid;
    grid-template-columns: repeat(10, minmax(96px, 1fr));
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 2px;
}

.workflow-step {
    min-height: 56px;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgba(21, 24, 29, 0.78);
    color: var(--muted);
}

.workflow-step strong {
    display: block;
    color: var(--accent);
    font-size: 12px;
}

.workflow-step span {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    line-height: 1.22;
}

.builder-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 16px;
}

.lower-grid {
    align-items: start;
}

.builder-column {
    display: grid;
    align-content: start;
    gap: 16px;
    min-width: 0;
}

.panel {
    min-width: 0;
    display: grid;
    gap: 12px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
}

.panel-heading {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.panel-heading span {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border: 1px solid rgba(73, 199, 184, 0.45);
    border-radius: 7px;
    background: rgba(73, 199, 184, 0.12);
    color: var(--accent);
    font-weight: 950;
}

.panel-heading h2 {
    min-width: 0;
    flex: 1 1 180px;
    font-size: 18px;
    overflow-wrap: anywhere;
}

.panel-collapse-button {
    margin-left: auto;
    min-height: 32px;
    padding: 6px 10px;
    border-color: rgba(225, 232, 225, 0.14);
    background: rgba(8, 10, 13, 0.56);
    color: var(--muted);
    font-size: 12px;
}

.panel.is-collapsed > :not(.panel-heading) {
    display: none !important;
}

.metadata-grid,
.estimate-grid,
.run-status {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 8px;
    margin: 0;
}

.metadata-grid div,
.estimate-grid div,
.run-status div {
    min-width: 0;
    padding: 9px;
    border: 1px solid rgba(225, 232, 225, 0.12);
    border-radius: 7px;
    background: var(--panel-soft);
}

.metadata-grid dt,
.estimate-grid dt,
.run-status dt {
    color: var(--muted);
    font-size: 10px;
    font-weight: 950;
    text-transform: uppercase;
}

.metadata-grid dd,
.estimate-grid dd,
.run-status dd {
    margin: 4px 0 0;
    overflow-wrap: anywhere;
    color: var(--text);
    font-size: 14px;
    line-height: 1.34;
}

.warning-list {
    display: grid;
    gap: 6px;
}

.warning,
.status-pill {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    min-height: 30px;
    padding: 6px 9px;
    border: 1px solid rgba(244, 184, 96, 0.42);
    border-radius: 7px;
    background: rgba(244, 184, 96, 0.1);
    color: #ffe0aa;
    font-size: 12px;
    font-weight: 900;
    overflow-wrap: anywhere;
}

.status-pill.ok,
.warning.ok {
    border-color: rgba(97, 211, 148, 0.42);
    background: rgba(97, 211, 148, 0.1);
    color: #c5f9d9;
}

.status-pill.bad,
.warning.bad {
    border-color: rgba(255, 116, 109, 0.42);
    background: rgba(255, 116, 109, 0.1);
    color: #ffd2ce;
}

.topology-list,
.choice-grid,
.observable-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 8px;
}

.topology-card,
.choice-card,
.observable-card {
    position: relative;
    display: grid;
    gap: 7px;
    min-width: 0;
    padding: 10px;
    border: 1px solid rgba(225, 232, 225, 0.13);
    border-radius: 8px;
    background: rgba(9, 11, 14, 0.45);
}

.topology-card.is-disabled,
.choice-card.is-disabled,
.observable-card.is-disabled {
    opacity: 0.48;
}

.topology-card label,
.choice-card label,
.observable-card label {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px;
    align-items: start;
    color: var(--text);
    font-weight: 900;
}

.topology-card small,
.choice-card small,
.observable-card small,
.help-text {
    margin: 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.4;
}

.topology-card code {
    color: #d7f6f1;
    font-size: 11px;
    overflow-wrap: anywhere;
}

.sweep-list {
    display: grid;
    gap: 10px;
}

.sweep-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 8px;
    align-items: end;
    padding: 10px;
    border: 1px solid rgba(225, 232, 225, 0.12);
    border-radius: 8px;
    background: rgba(9, 11, 14, 0.38);
}

.sweep-row label {
    display: grid;
    gap: 5px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 900;
}

.sweep-row input,
.sweep-row select {
    width: 100%;
    padding: 7px 9px;
}

.form-grid,
.review-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 10px;
    align-items: end;
}

.review-actions {
    grid-template-columns: minmax(220px, 1fr) auto minmax(180px, 1.3fr);
}

.table-wrap {
    overflow: auto;
    border: 1px solid rgba(225, 232, 225, 0.12);
    border-radius: 8px;
}

table {
    width: 100%;
    min-width: 960px;
    border-collapse: collapse;
}

th,
td {
    padding: 8px 9px;
    border-bottom: 1px solid rgba(225, 232, 225, 0.1);
    text-align: left;
    vertical-align: top;
    font-size: 12px;
}

th {
    color: var(--accent);
    background: rgba(73, 199, 184, 0.08);
    font-weight: 950;
}

td {
    color: #dce5e1;
    overflow-wrap: anywhere;
}

.run-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

progress {
    width: 100%;
    height: 14px;
    accent-color: var(--accent);
}

.run-log {
    display: grid;
    gap: 6px;
    max-height: 230px;
    overflow: auto;
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

.comparison-dashboard {
    display: grid;
    gap: 12px;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 8px;
}

.viz-card {
    min-width: 0;
    min-height: 126px;
    padding: 10px;
    border: 1px solid rgba(225, 232, 225, 0.12);
    border-radius: 8px;
    background: rgba(9, 11, 14, 0.45);
}

.viz-card h3 {
    color: var(--accent);
    font-size: 13px;
}

.viz-card p {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.4;
}

.mini-chart {
    display: flex;
    align-items: end;
    gap: 4px;
    height: 70px;
    margin-top: 10px;
}

.mini-chart span {
    flex: 1;
    min-width: 4px;
    border-radius: 3px 3px 0 0;
    background: linear-gradient(180deg, var(--accent), rgba(73, 199, 184, 0.18));
}

.export-panel p {
    margin: 0;
    color: var(--muted);
    line-height: 1.45;
}

textarea {
    width: 100%;
    min-height: 220px;
    padding: 10px;
    border: 1px solid rgba(225, 232, 225, 0.16);
    border-radius: 8px;
    background: rgba(8, 10, 13, 0.86);
    color: #e9f3ef;
    resize: vertical;
}

@media (max-width: 980px) {
    .experiment-topbar,
    .builder-grid,
    .review-actions {
        grid-template-columns: 1fr;
    }

    .language-select {
        width: min(100%, 260px);
    }

    .mode-strip {
        grid-template-columns: 1fr 1fr;
        width: 100%;
    }

    .workflow-map {
        grid-template-columns: repeat(5, minmax(128px, 1fr));
    }

    .sweep-row {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 620px) {
    .experiment-shell {
        padding: 12px;
    }

    h1 {
        font-size: 28px;
    }

    .topbar-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .workflow-map,
    .topology-list,
    .choice-grid,
    .observable-list,
    .metadata-grid,
    .estimate-grid,
    .run-status,
    .sweep-row,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .mode-strip {
        grid-template-columns: 1fr;
    }

    .mobile-player-panel {
        display: grid;
        gap: 12px;
        padding: 12px;
        border: 1px solid rgba(73, 199, 184, 0.32);
        border-radius: 8px;
        background: rgba(13, 18, 21, 0.96);
    }

    .mobile-player-panel h2 {
        font-size: 20px;
    }

    .mobile-player-panel p:not(.eyebrow) {
        margin: 6px 0 0;
        color: var(--muted);
        font-size: 13px;
        line-height: 1.42;
    }

    .mobile-player-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .workflow-map {
        display: none;
    }

    .panel {
        gap: 10px;
        padding: 12px;
    }

    .panel-heading h2 {
        flex-basis: 130px;
        font-size: 16px;
    }

    .panel-heading span {
        width: 24px;
        height: 24px;
        font-size: 12px;
    }

    body[data-builder-mode="compare"] .sweep-row label:nth-child(4),
    body[data-builder-mode="compare"] .sweep-row label:nth-child(5) {
        display: none;
    }

    body[data-builder-mode="compare"] .metadata-grid div:nth-child(n+5) {
        display: none;
    }

    body[data-builder-mode="compare"] .review-actions {
        gap: 8px;
    }

    .run-actions button {
        flex: 1 1 130px;
    }
}