:root {
    color-scheme: light;
    --bg: #f4efe7;
    --bg-strong: #e6d8c3;
    --ink: #1f2430;
    --muted: #5b6270;
    --panel: rgba(255, 251, 245, 0.84);
    --panel-strong: rgba(255, 247, 235, 0.96);
    --line: rgba(31, 36, 48, 0.12);
    --accent: #0f7b6c;
    --accent-2: #c56b2d;
    --error: #8f2d2d;
    --shadow: 0 18px 60px rgba(72, 48, 24, 0.12);
    font-family: "IBM Plex Sans", "Avenir Next", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(197, 107, 45, 0.18), transparent 32%),
        radial-gradient(circle at top right, rgba(15, 123, 108, 0.16), transparent 28%),
        linear-gradient(180deg, #f8f3eb 0%, var(--bg) 100%);
}

code,
pre,
textarea,
select {
    font-family: "IBM Plex Mono", "Fira Code", monospace;
}

.shell {
    width: min(1520px, calc(100vw - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

.hero {
    display: grid;
    grid-template-columns: 1.4fr 0.9fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.hero-card,
.panel,
.subpanel,
.error-block {
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.hero>div,
.panel {
    padding: 1.25rem;
}

.eyebrow {
    margin: 0 0 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.76rem;
    color: var(--accent);
}

h1,
h2,
h3,
ol,
p {
    margin: 0;
}

h1 {
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(2.6rem, 5vw, 4.6rem);
    line-height: 0.96;
    max-width: 12ch;
}

.lede {
    margin-top: 1rem;
    max-width: 72ch;
    color: var(--muted);
    line-height: 1.6;
}

.hero-card {
    padding: 1.25rem;
    align-self: end;
    background: linear-gradient(180deg, rgba(255, 247, 235, 0.98), rgba(241, 232, 221, 0.92));
}

.hero-card ol {
    margin-top: 0.8rem;
    padding-left: 1.2rem;
    color: var(--muted);
    line-height: 1.8;
}

.grid {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

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

.workspace {
    grid-template-columns: minmax(320px, 0.78fr) minmax(0, 1.22fr);
}

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

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
}

.split {
    align-items: flex-start;
}

.badge {
    padding: 0.34rem 0.7rem;
    border-radius: 999px;
    background: rgba(15, 123, 108, 0.12);
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
}

.editor,
.target-select,
.format-picker select {
    width: 100%;
    border: 1px solid rgba(31, 36, 48, 0.14);
    border-radius: 18px;
    padding: 0.95rem 1rem;
    background: var(--panel-strong);
    color: var(--ink);
}

.editor {
    min-height: 220px;
    resize: vertical;
    line-height: 1.55;
}

.editor.tall {
    min-height: 360px;
}

.stack-label,
.format-picker {
    display: grid;
    gap: 0.45rem;
    color: var(--muted);
    font-size: 0.88rem;
}

.subpanel {
    margin-top: 0.9rem;
    padding: 1rem;
    background: rgba(255, 252, 247, 0.72);
}

.stacked-subsections {
    display: grid;
    gap: 1rem;
}

.stacked-subsections>.subpanel {
    margin-top: 0;
}

.nested-subpanel {
    margin-top: 0.9rem;
}

.variable-list {
    display: grid;
    gap: 0.8rem;
}

.variable-card {
    display: grid;
    gap: 0.75rem;
    padding: 0.9rem;
    border: 1px solid rgba(31, 36, 48, 0.1);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.55);
}

.variable-meta {
    display: grid;
    gap: 0.3rem;
}

.variable-meta code {
    font-size: 0.88rem;
    color: var(--accent);
    font-weight: 700;
}

.variable-meta p {
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.45;
}

.empty-state {
    color: var(--muted);
}

.variable-render {
    display: grid;
    gap: 0.6rem;
    overflow-x: auto;
}

.scalar-value {
    color: var(--ink);
}

.variable-empty {
    color: var(--muted);
    font-family: "IBM Plex Mono", "Fira Code", monospace;
    font-size: 0.86rem;
}

.json-details {
    display: inline;
}

.json-summary {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    list-style: none;
    color: var(--ink);
}

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

.json-toggle {
    display: inline-block;
    width: 0.8rem;
    color: var(--muted);
    font-weight: 700;
}

.json-details>.json-summary .json-toggle-collapsed,
.json-details>.json-summary .json-preview {
    display: inline-block;
}

.json-details>.json-summary .json-toggle-expanded,
.json-details>.json-summary .json-opening-inline,
.json-details>.json-expanded {
    display: none;
}

.json-details[open]>.json-summary .json-toggle-collapsed,
.json-details[open]>.json-summary .json-preview {
    display: none;
}

.json-details[open]>.json-summary .json-toggle-expanded,
.json-details[open]>.json-summary .json-opening-inline {
    display: inline-block;
}

.json-expanded,
.json-nested,
.json-block {
    display: grid;
    gap: 0.1rem;
}

.json-details[open]>.json-expanded {
    display: grid;
}

.json-expanded {
    margin-top: 0.1rem;
}

.json-nested {
    margin-left: 0.7rem;
    padding-left: 0.45rem;
}

.json-line {
    display: block;
    line-height: 1.5;
}

.json-key,
.json-opening,
.json-closing,
.json-preview,
.json-comma,
.variable-render {
    font-family: "IBM Plex Mono", "Fira Code", monospace;
    font-size: 0.86rem;
}

.json-key {
    color: var(--ink);
}

.json-colon,
.json-opening,
.json-closing,
.json-comma {
    color: var(--muted);
}

.json-line-value {
    display: inline;
    min-width: 0;
}

.json-opening,
.json-closing {
    padding-left: 0;
}

.json-opening,
.json-closing,
.json-line {
    white-space: nowrap;
}

.json-closing {
    margin-left: 0;
}

.hint {
    margin-top: 0.8rem;
    color: var(--muted);
    line-height: 1.55;
}

pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.5;
    font-size: 0.86rem;
}

.error-block {
    padding: 1rem;
    background: rgba(193, 64, 64, 0.08);
    border-color: rgba(143, 45, 45, 0.28);
}

.error-block h3,
.error-text {
    color: var(--error);
}

.app-footer {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(255, 251, 245, 0.72);
    box-shadow: var(--shadow);
}

.app-footer-summary {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 1rem;
    cursor: pointer;
    list-style: none;
}

.app-footer-summary::-webkit-details-marker {
    display: none;
}

.app-footer-summary::before {
    content: "+";
    display: inline-block;
    width: 0.8rem;
    color: var(--muted);
    font-family: "IBM Plex Mono", "Fira Code", monospace;
    font-size: 0.84rem;
    font-weight: 700;
}

.app-footer[open] .app-footer-summary::before {
    content: "-";
}

.footer-label,
.footer-version,
.footer-lines {
    font-family: "IBM Plex Mono", "Fira Code", monospace;
    font-size: 0.84rem;
}

.footer-label {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-version {
    color: var(--accent);
    font-weight: 700;
}

.footer-lines {
    display: grid;
    gap: 0.25rem;
    color: var(--muted);
    white-space: pre-wrap;
    margin-top: 0.55rem;
}

@media (max-width: 1120px) {

    .hero,
    .inputs,
    .workspace,
    .outputs {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .shell {
        width: min(100vw - 1rem, 100%);
        padding-top: 1rem;
    }

    .hero>div,
    .panel {
        padding: 1rem;
    }

    h1 {
        font-size: 2.5rem;
    }
}