:root {
    --bg: #f8fafc;
    --surface: #ffffff;
    --surface-soft: #f1f5f9;
    --text: #0f172a;
    --muted: #64748b;
    --line: #e2e8f0;
    --primary: #0f766e;
    --primary-dark: #115e59;
    --accent: #ca8a04;
    --blue: #2563eb;
    --danger: #b42318;
    --shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 16px -6px rgba(15, 23, 42, 0.05);
    --transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

[data-theme="dark"] {
    --bg: #0b0f19;
    --surface: #151f32;
    --surface-soft: #1d2b44;
    --text: #f8fafc;
    --muted: #94a3b8;
    --line: #26354e;
    --primary: #14b8a6;
    --primary-dark: #2dd4bf;
    --accent: #fbbf24;
    --blue: #3b82f6;
    --danger: #f43f5e;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 16px -6px rgba(0, 0, 0, 0.3);
}

* {
    box-sizing: border-box;
    transition: var(--transition);
}

body {
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

button,
input,
select {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}


.app-header {
    align-items: center;
    display: flex;
    gap: 20px;
    justify-content: space-between;
    margin: 0 auto;
    max-width: 1440px;
    padding: 24px 28px 18px;
}

.eyebrow,
.section-kicker {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--primary-dark);
    display: block;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0;
    margin: 0 0 4px;
    text-transform: uppercase;
}

h1,
h2 {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.15;
    margin: 0;
}

h1 {
    font-size: 30px;
}

h2 {
    font-size: 20px;
}

.header-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

#themeToggle {
    border-radius: 50%;
    width: 40px;
    height: 40px;
    padding: 0;
    display: inline-flex;
    justify-content: center;
    align-items: center;
}

.button {
    align-items: center;
    background: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 6px;
    color: #ffffff;
    cursor: pointer;
    display: inline-flex;
    font-weight: 800;
    min-height: 40px;
    padding: 8px 14px;
}

.button:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.button.ghost {
    background: var(--surface);
    border-color: var(--line);
    color: var(--text);
}

.button.ghost:hover {
    background: var(--surface-soft);
}

.workspace {
    align-items: start;
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 420px);
    margin: 0 auto;
    max-width: 1440px;
    padding: 0 28px 32px;
}

.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 18px;
}

.main-panel {
    min-width: 0;
}

.side-column {
    display: grid;
    gap: 18px;
}

.extra-input-grid {
    margin-top: 12px;
}

.panel-heading {
    align-items: center;
    display: flex;
    gap: 14px;
    justify-content: space-between;
    margin-bottom: 16px;
}

.compact-heading {
    margin-bottom: 14px;
}

.panel-collapsible > summary {
    cursor: pointer;
    list-style: none;
    margin-bottom: 0;
}

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

.panel-collapsible > summary::after {
    color: var(--muted);
    content: '+';
    font-size: 18px;
    font-weight: 900;
    line-height: 1;
}

.panel-collapsible[open] > summary {
    margin-bottom: 14px;
}

.panel-collapsible[open] > summary::after {
    content: '-';
}

.panel-inline-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 10px;
}

.result-pill {
    background: #e6f5f3;
    border: 1px solid #9fd8d2;
    border-radius: 999px;
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 800;
    min-width: 100px;
    padding: 5px 10px;
    text-align: center;
}

.result-pill.error {
    background: #ffebe8;
    border-color: #fecdca;
    color: var(--danger);
}

.form-grid {
    display: grid;
    gap: 12px;
}

.list-grid {
    grid-template-columns: minmax(180px, 1.25fr) repeat(5, minmax(104px, 1fr));
}

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

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

.field {
    color: var(--text);
    display: grid;
    font-size: 13px;
    font-weight: 800;
    gap: 6px;
}

.field input {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--text);
    min-height: 42px;
    padding: 9px 10px;
    width: 100%;
}

.field select {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--text);
    min-height: 42px;
    padding: 9px 10px;
    width: 100%;
}

.field input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.16);
    outline: none;
}

.field select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.16);
    outline: none;
}

.strong-field input {
    border-color: #8aa0b8;
    font-weight: 800;
}

.result-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 16px;
}

.metric,
.equivalent-card {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    min-height: 94px;
    padding: 14px;
}

.metric span,
.equivalent-card span {
    color: var(--muted);
    display: block;
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 8px;
}

.metric strong,
.equivalent-card strong {
    display: block;
    font-size: 24px;
    line-height: 1.15;
    overflow-wrap: anywhere;
}

.primary-metric {
    background: #ecfdf3;
    border-color: #abefc6;
}

.price-visual {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    display: grid;
    gap: 10px;
    margin-top: 16px;
    padding: 14px;
}

.bar-row {
    align-items: center;
    display: grid;
    gap: 12px;
    grid-template-columns: 64px minmax(0, 1fr) 120px;
}

.bar-row span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.bar-row strong {
    font-size: 13px;
    text-align: right;
}

.bar {
    background: #e7edf4;
    border-radius: 999px;
    height: 14px;
    overflow: hidden;
}

.bar i {
    display: block;
    height: 100%;
    transition: width 160ms ease;
}

.bar-list {
    background: var(--blue);
    width: 100%;
}

.bar-net {
    background: var(--accent);
    width: 0%;
}

.equivalent-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
}

.equivalent-card {
    min-height: 82px;
}

.equivalent-card strong {
    font-size: 20px;
}

.uplift-wrap {
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-top: 16px;
    padding: 14px;
}

.extra-wrap {
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-top: 16px;
    padding: 14px;
}

.mini-button {
    min-height: 34px;
    padding: 6px 10px;
}

.uplift-hint {
    color: var(--muted);
    font-size: 13px;
    margin: 0 0 12px;
}

.uplift-driver-row {
    align-items: center;
    display: flex;
    gap: 10px;
    margin: 0 0 12px;
}

.uplift-driver-row span {
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
}

.uplift-driver-chip {
    background: #e6f5f3;
    border: 1px solid #9fd8d2;
    border-radius: 999px;
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0;
    padding: 3px 9px;
}

.field input.uplift-active-input {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(202, 138, 4, 0.18);
}

.uplift-grid {
    grid-template-columns: minmax(220px, 1.2fr) repeat(4, minmax(130px, 1fr));
}

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

.uplift-results {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 14px;
}

.metric-note {
    color: var(--muted);
    display: block;
    font-size: 12px;
    font-style: normal;
    font-weight: 700;
    margin-top: 6px;
}

.history-list {
    display: grid;
    gap: 8px;
    list-style: none;
    margin: 12px 0 0;
    padding: 0;
}

.history-item {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 8px;
    display: grid;
    gap: 8px;
    padding: 10px;
}

.history-head {
    align-items: baseline;
    display: flex;
    gap: 8px;
    justify-content: space-between;
}

.history-title {
    font-size: 13px;
    font-weight: 800;
}

.history-time {
    color: var(--muted);
    font-size: 12px;
}

.history-body {
    color: var(--text);
    opacity: 0.85;
    font-size: 12px;
    white-space: pre-line;
}

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

.history-actions .button {
    min-height: 32px;
    padding: 6px 10px;
}

.history-empty {
    color: var(--muted);
    font-size: 13px;
}

.table-wrap {
    border: 1px solid var(--line);
    border-radius: 8px;
    margin-top: 16px;
    overflow-x: auto;
}

table {
    border-collapse: collapse;
    min-width: 760px;
    width: 100%;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 10px;
    text-align: left;
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: 0;
}

th {
    background: var(--surface-soft);
    color: var(--text);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.number {
    text-align: right;
}

.empty-cell {
    color: var(--muted);
    text-align: center;
}

.mini-results {
    display: grid;
    gap: 8px;
    margin: 14px 0 0;
}

.mini-results.separated {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}

.mini-results div {
    align-items: baseline;
    display: flex;
    gap: 12px;
    justify-content: space-between;
}

.mini-results dt {
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.mini-results dd {
    font-size: 17px;
    font-weight: 900;
    margin: 0;
    text-align: right;
}

.toast {
    background: #111827;
    border-radius: 8px;
    bottom: 18px;
    color: #ffffff;
    font-weight: 800;
    left: 50%;
    opacity: 0;
    padding: 10px 14px;
    pointer-events: none;
    position: fixed;
    transform: translate(-50%, 16px);
    transition: opacity 160ms ease, transform 160ms ease;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

@media (max-width: 1180px) {
    .workspace {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 900px) {
    .side-column,
    .result-grid,
    .uplift-results {
        grid-template-columns: 1fr;
    }

    .metric,
    .equivalent-card {
        min-height: 0;
    }
}

@media (max-width: 680px) {
    .app-header {
        align-items: flex-start;
        flex-direction: column;
        padding: 18px;
    }

    .workspace {
        padding: 0 18px 24px;
    }

    .header-actions {
        width: 100%;
    }

    .button {
        justify-content: center;
        flex: 1;
    }

    .list-grid,
    .compact-grid,
    .uplift-grid {
        grid-template-columns: 1fr;
    }

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

    .panel {
        padding: 14px;
    }

    .bar-row {
        grid-template-columns: 56px minmax(0, 1fr);
    }

    .bar-row strong {
        grid-column: 2;
        text-align: left;
    }
}