:root {
    --bg: #f6f2ea;
    --ink: #191919;
    --muted: #645a4d;
    --panel: rgba(255, 251, 245, 0.82);
    --panel-border: rgba(34, 34, 34, 0.12);
    --accent: #d74d2f;
    --accent-dark: #9e2a19;
    --accent-soft: rgba(215, 77, 47, 0.12);
    --teal-soft: rgba(16, 105, 114, 0.10);
    --shadow: 0 24px 50px rgba(72, 47, 25, 0.12);
    --radius: 24px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Space Grotesk", "Aptos", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(215, 77, 47, 0.20), transparent 32%),
        radial-gradient(circle at bottom right, rgba(16, 105, 114, 0.16), transparent 35%),
        linear-gradient(160deg, #fffaf2 0%, #f5ede0 50%, #efe4d6 100%);
}

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

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

.page-shell {
    width: min(1480px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0 40px;
}

.hero,
.panel {
    backdrop-filter: blur(10px);
    background: var(--panel);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow);
}

.hero {
    display: grid;
    gap: 20px;
    padding: 28px;
    border-radius: 28px;
}

.eyebrow,
.panel-kicker,
.mini-label {
    margin: 0 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.78rem;
    color: var(--accent-dark);
}

.hero h1,
.panel h2,
.quiz-editor-card h3,
.question-card h4 {
    margin: 0;
    line-height: 1.05;
}

.hero h1 {
    font-size: clamp(2.2rem, 4vw, 4.2rem);
    max-width: 15ch;
}

.hero-copy {
    max-width: 68ch;
    color: var(--muted);
    margin: 14px 0 0;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-meta span,
.summary-pill {
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(25, 25, 25, 0.06);
    font-size: 0.92rem;
}

.dashboard {
    margin-top: 22px;
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 20px;
}

.panel {
    border-radius: var(--radius);
    padding: 22px;
}

.builder-panel,
.preview-panel {
    min-height: 620px;
}

.library-panel,
.api-panel {
    min-height: 260px;
}

.panel-header,
.builder-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.panel-header {
    margin-bottom: 18px;
}

.question-header {
    margin-bottom: 14px;
}

.action-row,
.nested-actions,
.summary-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.action-row {
    margin-bottom: 14px;
}

.summary-strip {
    margin-bottom: 16px;
}

.button,
.file-picker span {
    border: none;
    border-radius: 14px;
    padding: 12px 18px;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover,
.file-picker span:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 20px rgba(25, 25, 25, 0.08);
}

.button-primary {
    background: linear-gradient(135deg, var(--accent), #ef7c32);
    color: white;
}

.button-secondary,
.file-picker span {
    background: rgba(25, 25, 25, 0.06);
    color: var(--ink);
}

.button-ghost {
    background: transparent;
    color: var(--accent-dark);
    border: 1px solid rgba(215, 77, 47, 0.18);
}

.file-picker {
    position: relative;
    overflow: hidden;
}

.file-picker input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.quiz-builder {
    display: grid;
    gap: 18px;
}

.quiz-editor-card,
.question-card {
    border-radius: 22px;
    border: 1px solid rgba(25, 25, 25, 0.08);
}

.quiz-editor-card {
    padding: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(251, 244, 236, 0.9));
}

.question-card {
    padding: 16px;
    background: var(--teal-soft);
}

.question-stack,
.choice-stack {
    display: grid;
    gap: 14px;
}

.question-stack {
    margin: 18px 0;
}

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

.field {
    display: grid;
    gap: 8px;
}

.field span {
    font-size: 0.92rem;
    color: var(--muted);
}

.field input,
.choice-input,
textarea {
    width: 100%;
    border-radius: 14px;
    border: 1px solid rgba(25, 25, 25, 0.12);
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 14px;
    color: var(--ink);
}

.field-wide {
    grid-column: span 2;
}

.field-small {
    max-width: 160px;
}

.choice-row {
    display: grid;
    grid-template-columns: auto auto 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(25, 25, 25, 0.07);
}

.choice-radio {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.choice-radio-label {
    color: var(--muted);
    font-size: 0.92rem;
}

.advanced-panel {
    margin-top: 18px;
    border-radius: 20px;
    border: 1px solid rgba(25, 25, 25, 0.10);
    background: rgba(255, 255, 255, 0.55);
    padding: 16px;
}

.advanced-panel summary {
    cursor: pointer;
    font-weight: 700;
}

.advanced-copy {
    color: var(--muted);
    margin: 12px 0;
}

.advanced-actions {
    margin-bottom: 12px;
}

textarea,
pre {
    min-height: 340px;
    margin: 0;
    border-radius: 18px;
    font-size: 0.94rem;
    line-height: 1.6;
    overflow: auto;
}

textarea {
    resize: vertical;
}

pre {
    width: 100%;
    border: 1px solid rgba(25, 25, 25, 0.12);
    background: #151515;
    color: #f8f3ea;
    padding: 18px;
}

.status-box {
    margin-top: 14px;
    border-radius: 18px;
    padding: 14px 16px;
    background: rgba(25, 25, 25, 0.05);
    color: var(--muted);
    min-height: 56px;
}

.status-box[data-variant="success"] {
    background: rgba(52, 138, 92, 0.14);
    color: #1e6b44;
}

.status-box[data-variant="error"] {
    background: rgba(168, 43, 43, 0.12);
    color: #9d2020;
}

.quiz-library {
    display: grid;
    gap: 14px;
}

.quiz-card {
    padding: 16px;
    border-radius: 18px;
    background: white;
    border: 1px solid rgba(25, 25, 25, 0.08);
}

.quiz-card h3 {
    margin: 0 0 8px;
}

.quiz-meta,
.question-list {
    margin: 0;
    padding: 0;
    list-style: none;
    color: var(--muted);
}

.quiz-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.question-list li + li,
.endpoint-list li + li {
    margin-top: 8px;
}

.endpoint-list {
    margin: 0;
    padding-left: 20px;
    color: var(--muted);
}

@media (max-width: 1100px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 780px) {
    .field-grid {
        grid-template-columns: 1fr;
    }

    .field-wide {
        grid-column: span 1;
    }

    .choice-row {
        grid-template-columns: 1fr;
        align-items: stretch;
    }

    .button-ghost {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 20px, 1480px);
        padding-top: 18px;
    }

    .hero,
    .panel,
    .quiz-editor-card,
    .question-card {
        padding: 16px;
    }

    textarea,
    pre {
        min-height: 280px;
        font-size: 0.88rem;
    }

    .panel-header,
    .builder-card-header {
        flex-direction: column;
    }
}