:root {
    --bg-primary: #0b0f14;
    --bg-panel: #172228;
    --bg-soft: #1c2a31;
    --bg-input: #1f3036;
    --text-primary: #eef6f1;
    --text-secondary: #a4b7af;
    --border-color: #294039;
    --accent-primary: #f59e0b;
    --accent-secondary: #22c55e;
    --accent-tertiary: #38bdf8;
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.32);
}

[data-theme="light"] {
    --bg-primary: #f6f7f1;
    --bg-panel: #ffffff;
    --bg-soft: #f4f8f3;
    --bg-input: #eef3ec;
    --text-primary: #1f2937;
    --text-secondary: #5f6e69;
    --border-color: #d6e0db;
    --shadow-lg: 0 18px 48px rgba(26, 39, 35, 0.08);
}

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

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.container {
    max-width: 1680px;
    margin: 0 auto;
    padding: 24px;
}

header {
    padding: 24px 0;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
}

.back-link:hover { color: var(--text-primary); }

.tool-header {
    margin-top: 18px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.tool-icon-header {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--bg-soft);
    border: 1px solid var(--border-color);
    color: var(--accent-primary);
}

.tool-icon-header svg { width: 26px; height: 26px; }

h1 {
    margin: 0;
    font-size: 2rem;
    line-height: 1.1;
}

.tagline {
    margin: 6px 0 0;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.85rem;
}

.theme-toggle {
    display: flex;
    gap: 6px;
    padding: 4px;
    border: 1px solid var(--border-color);
    background: var(--bg-panel);
    border-radius: 12px;
}

.theme-toggle button {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 9px;
    cursor: pointer;
}

.theme-toggle button:hover {
    color: var(--text-primary);
    background: var(--bg-input);
    border-color: rgba(245, 158, 11, 0.35);
}

html[data-theme="light"] .theme-toggle button[data-theme-toggle="light" aria-pressed="false"],
html[data-theme="dark"] .theme-toggle button[data-theme-toggle="dark" aria-pressed="false"],
html:not([data-theme="light"]) .theme-toggle button[data-theme-toggle="dark" aria-pressed="false"] {
    color: var(--text-primary);
    background: var(--bg-input);
    border-color: rgba(245, 158, 11, 0.35);
}

.tool-layout {
    display: grid;
    grid-template-columns: 390px minmax(0, 1fr) 300px;
    gap: 24px;
    align-items: start;
}

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    box-shadow: var(--shadow-lg);
}

.control-panel, .visualization-panel, .side-card { padding: 20px; }

.panel-header, .chart-panel-header, .table-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 18px;
}

.panel-header h2, .chart-panel-header h2, .side-card h3, .table-header h3 {
    margin: 0 0 6px;
}

.panel-header p, .chart-panel-header p {
    margin: 0;
    color: var(--text-secondary);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tool-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-soft);
    color: var(--text-primary);
    border-radius: 12px;
    padding: 10px 14px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.tool-btn:hover { border-color: rgba(245, 158, 11, 0.4); }

.tool-btn.danger {
    background: #b91c1c;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.08);
}

.status-line {
    margin: 16px 0 0;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-soft);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.status-line.error {
    color: #fecaca;
    background: rgba(127, 29, 29, 0.45);
    border-color: rgba(239, 68, 68, 0.35);
}

.status-line.success {
    color: #dcfce7;
    background: rgba(20, 83, 45, 0.45);
    border-color: rgba(34, 197, 94, 0.35);
}

.scope-warning-block {
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(245, 158, 11, 0.42);
    background: rgba(245, 158, 11, 0.10);
    color: var(--text-primary);
}

.scope-warning-block strong {
    display: block;
    margin-bottom: 6px;
    color: var(--accent-primary);
}

.scope-warning-block p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.5;
}

.scope-warning-block p + p {
    margin-top: 8px;
}

.scope-warning-block p strong {
    display: inline;
    margin: 0;
    color: var(--text-primary);
}

.section-block {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.section-block h3, .advanced-panel summary { margin: 0 0 14px; }

.section-note {
    margin: 12px 0 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.control-grid, .advanced-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.input-line {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.input-line span {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.input-line input, .input-line select {
    width: 100%;
    padding: 11px 12px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-primary);
    font: inherit;
}

.temperature-pair-line {
    grid-column: span 1;
}

.temperature-pair-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.temperature-mini-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.temperature-mini-field span {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.advanced-panel {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.advanced-panel summary,
.driver-panel summary {
    cursor: pointer;
    list-style: none;
    font-weight: 600;
}

.advanced-panel summary::-webkit-details-marker,
.driver-panel summary::-webkit-details-marker { display: none; }
.advanced-panel summary::after,
.driver-panel summary::after { content: "+"; float: right; color: var(--text-secondary); }
.advanced-panel[open] summary::after,
.driver-panel[open] summary::after { content: "−"; }

.species-parameter-card {
    padding: 16px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    background: var(--bg-soft);
}

.species-parameter-card h4 { margin: 0 0 12px; }
.hidden { display: none; }

.metrics-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.metric-card {
    padding: 16px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-soft);
}

.metric-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.metric-value {
    display: block;
    margin-top: 8px;
    font-size: 1.3rem;
    line-height: 1.2;
}

.metric-meta {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.uncertainty-band-note {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.chart-panel-header { margin-top: 20px; }

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.chart-legend span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.legend-swatch {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 999px;
}

.legend-swatch.total { background: var(--accent-primary); }
.legend-swatch.st { background: var(--accent-secondary); }
.legend-swatch.lb { background: var(--accent-tertiary); }

.chart-shell {
    margin-top: 16px;
    padding: 14px;
    position: relative;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    background: #0d1418;
}

[data-theme="light"] .chart-shell {
    background: #f7faf8;
}

.compact-chart-shell {
    margin-top: 14px;
}

.driver-panel {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.driver-panel-copy {
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.55;
}

.driver-definition-list {
    margin: 12px 0 0;
    padding-left: 18px;
    color: var(--text-secondary);
}

.driver-definition-list li {
    margin: 0 0 10px;
    line-height: 1.55;
}

.driver-reference-block {
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    background: var(--bg-soft);
}

.driver-reference-block strong {
    display: block;
    margin-bottom: 10px;
}

.driver-reference-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-secondary);
}

.driver-reference-list li {
    margin: 0 0 10px;
    line-height: 1.55;
}

.driver-reference-list a {
    color: var(--accent-primary);
    text-decoration: none;
}

.driver-reference-list a:hover {
    text-decoration: underline;
}

.driver-model-details {
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    background: var(--bg-soft);
}

.driver-model-details summary {
    cursor: pointer;
    list-style: none;
    font-weight: 600;
}

.driver-model-details summary::-webkit-details-marker {
    display: none;
}

.driver-model-details summary::after {
    content: "+";
    float: right;
    color: var(--text-secondary);
}

.driver-model-details[open] summary::after {
    content: "-";
}

.model-equation-block {
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid rgba(232, 121, 249, 0.24);
    background: rgba(232, 121, 249, 0.08);
    overflow-x: auto;
}

.model-equation-block code {
    font-family: "JetBrains Mono", monospace;
    color: var(--text-primary);
    font-size: 0.92rem;
    white-space: nowrap;
}

.model-table-block {
    margin-top: 14px;
}

.model-table-block h4 {
    margin: 0 0 10px;
    font-size: 0.98rem;
}

.model-table-wrap {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: rgba(11, 15, 20, 0.18);
}

[data-theme="light"] .model-table-wrap {
    background: rgba(255, 255, 255, 0.78);
}

.model-detail-table {
    width: 100%;
    min-width: 720px;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.model-detail-table th,
.model-detail-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
    text-align: left;
}

.model-detail-table thead th {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-theme="light"] .model-detail-table thead th {
    background: rgba(31, 41, 55, 0.04);
}

.model-detail-table tbody tr:last-child td {
    border-bottom: none;
}

.model-detail-table td code {
    font-family: "JetBrains Mono", monospace;
    color: var(--accent-primary);
    font-size: 0.88rem;
}

#growthChart {
    width: 100%;
    height: auto;
    display: block;
}

#phChart,
#substrateChart,
#storageChart,
#storageCfuChart {
    width: 100%;
    height: auto;
    display: block;
}

.chart-tooltip {
    position: absolute;
    min-width: 188px;
    pointer-events: none;
    z-index: 3;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(245, 158, 11, 0.35);
    background: rgba(11, 15, 20, 0.92);
    color: #f8fafc;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
    font-size: 0.9rem;
    line-height: 1.45;
}

[data-theme="light"] .chart-tooltip {
    background: rgba(255, 255, 255, 0.96);
    color: #0f172a;
}

.chart-tooltip.hidden {
    display: none;
}

.chart-tooltip-time {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.82rem;
}

.chart-tooltip-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.chart-tooltip-label {
    color: var(--text-secondary);
}

.chart-hover-line {
    stroke: rgba(245, 158, 11, 0.65);
    stroke-width: 1.5;
    stroke-dasharray: 6 6;
}

.chart-hover-circle {
    stroke: rgba(11, 15, 20, 0.95);
    stroke-width: 2;
}

.chart-ph-line {
    fill: none;
    stroke: #e879f9;
    stroke-width: 4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-storage-line {
    fill: none;
    stroke: #60a5fa;
    stroke-width: 4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-threshold-line {
    fill: none;
    stroke: rgba(232, 121, 249, 0.45);
    stroke-width: 2;
    stroke-dasharray: 8 8;
}

.chart-threshold-label {
    fill: var(--text-secondary);
    font-size: 0.82rem;
    font-family: "JetBrains Mono", monospace;
}

.data-table-panel { margin-top: 18px; }
.table-note { color: var(--text-secondary); font-size: 0.9rem; }

.validation-panel {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.validation-panel summary {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 18px;
    cursor: pointer;
    list-style: none;
    font-weight: 600;
}

.validation-panel summary::-webkit-details-marker {
    display: none;
}

.validation-panel summary::after {
    content: "+";
    color: var(--text-secondary);
    margin-left: auto;
}

.validation-panel[open] summary::after {
    content: "-";
}

.validation-panel .table-note {
    display: inline-block;
    max-width: 720px;
    text-align: right;
}

.validation-panel-body {
    margin-top: 12px;
}

.table-wrap {
    margin-top: 12px;
    overflow: auto;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.validation-table-wrap table {
    min-width: 0;
    table-layout: fixed;
}

.validation-table-wrap {
    overflow-x: visible;
}

.validation-table-wrap th:nth-child(1),
.validation-table-wrap td:nth-child(1) {
    width: 34%;
}

.validation-table-wrap th:nth-child(2),
.validation-table-wrap td:nth-child(2) {
    width: 24%;
}

.validation-table-wrap th:nth-child(3),
.validation-table-wrap td:nth-child(3) {
    width: 28%;
}

.validation-table-wrap th:nth-child(4),
.validation-table-wrap td:nth-child(4) {
    width: 14%;
    text-align: center;
    vertical-align: top;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}

th, td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

thead th {
    background: var(--bg-soft);
    color: var(--text-secondary);
    font-size: 0.84rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tbody tr:last-child td { border-bottom: none; }

.validation-check-title {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    overflow-wrap: anywhere;
}

.validation-check-ref {
    display: inline-block;
    margin-top: 6px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.88rem;
}

.validation-check-ref:hover {
    text-decoration: underline;
}

.validation-check-fixture,
.validation-check-note,
.validation-cell-copy {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.45;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.validation-check-fixture {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.validation-status {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    padding: 8px 12px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.84rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    border: 1px solid transparent;
}

.validation-status.pass {
    color: #dcfce7;
    background: rgba(20, 83, 45, 0.45);
    border-color: rgba(34, 197, 94, 0.35);
}

.validation-status.warn {
    color: #fef3c7;
    background: rgba(146, 64, 14, 0.35);
    border-color: rgba(245, 158, 11, 0.35);
}

.validation-status.limited {
    color: #dbeafe;
    background: rgba(30, 64, 175, 0.32);
    border-color: rgba(96, 165, 250, 0.34);
}

.validation-status.fail {
    color: #fecaca;
    background: rgba(127, 29, 29, 0.45);
    border-color: rgba(239, 68, 68, 0.35);
}

.validation-status.pending {
    color: var(--text-secondary);
    background: rgba(71, 85, 105, 0.22);
    border-color: rgba(148, 163, 184, 0.24);
}

.side-column {
    display: grid;
    gap: 20px;
}

.side-card h3 { margin-bottom: 12px; }

.note-list, .warning-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-secondary);
}

.note-list li, .warning-list li { margin: 0 0 10px; }
.warning-list li { color: #fcd34d; }
.warning-list li.ok { color: var(--text-secondary); }

.reference-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-secondary);
}

.reference-list li {
    margin: 0 0 12px;
}

.reference-heading {
    display: block;
    margin-bottom: 4px;
    color: var(--text-secondary);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.reference-list a {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
}

.reference-list a:hover {
    color: var(--accent-primary);
}

.reference-detail {
    display: block;
    margin-top: 4px;
}

.reference-note {
    margin: 14px 0 0;
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.55;
}

.reference-note a {
    color: var(--accent-primary);
    text-decoration: none;
}

.reference-note a:hover {
    text-decoration: underline;
}

.species-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.species-chip::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--chip-color);
    display: inline-block;
}

.chart-axis-label, .chart-tick-label {
    fill: var(--text-secondary);
    font-family: "JetBrains Mono", monospace;
}

.chart-axis-label { font-size: 15px; }
.chart-tick-label { font-size: 12px; }
.chart-grid-line { stroke: rgba(148, 163, 184, 0.2); stroke-width: 1; }
.chart-axis-line { stroke: rgba(226, 232, 240, 0.6); stroke-width: 1.5; }
.chart-total-line { fill: none; stroke: var(--accent-primary); stroke-width: 3.5; }
.chart-st-line { fill: none; stroke: var(--accent-secondary); stroke-width: 2.5; }
.chart-lb-line { fill: none; stroke: var(--accent-tertiary); stroke-width: 2.5; }
.chart-substrate-line { fill: none; stroke: var(--accent-primary); stroke-width: 3; }
.chart-driver-line { fill: none; stroke: var(--accent-secondary); stroke-width: 2.25; stroke-dasharray: 8 6; }
.chart-point { stroke: rgba(11, 15, 20, 0.95); stroke-width: 2; }

@media (max-width: 1480px) {
    .tool-layout { grid-template-columns: 360px minmax(0, 1fr); }
    .side-column {
        grid-column: 1 / -1;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .metrics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1080px) {
    .tool-layout { grid-template-columns: 1fr; }
    .side-column { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
    .container { padding: 16px; }
    .header-content, .panel-header, .chart-panel-header {
        flex-direction: column;
        align-items: stretch;
    }
    .validation-panel summary {
        flex-direction: column;
        align-items: stretch;
    }
    .validation-panel .table-note {
        text-align: left;
        max-width: none;
    }
    .validation-table-wrap th:nth-child(1),
    .validation-table-wrap td:nth-child(1),
    .validation-table-wrap th:nth-child(2),
    .validation-table-wrap td:nth-child(2),
    .validation-table-wrap th:nth-child(3),
    .validation-table-wrap td:nth-child(3),
    .validation-table-wrap th:nth-child(4),
    .validation-table-wrap td:nth-child(4) {
        width: auto;
    }
    .control-grid, .advanced-grid, .metrics-grid {
        grid-template-columns: 1fr;
    }
    .metric-value { font-size: 1.15rem; }
}