:root {
    color-scheme: light;
    --bg: #07131d;
    --bg-warm: #11324a;
    --panel: rgba(10, 23, 35, 0.76);
    --panel-border: rgba(190, 213, 231, 0.18);
    --panel-solid: #0f2233;
    --text: #f4f2eb;
    --muted: #b7c8d7;
    --accent: #f6b86f;
    --accent-strong: #ff9155;
    --success: #8bdcb0;
    --danger: #ffb2a6;
    --shadow: 0 30px 80px rgba(2, 8, 13, 0.45);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --grid-gap: 1.25rem;
    --mono: "SFMono-Regular", "IBM Plex Mono", "Menlo", monospace;
    --sans: "Avenir Next", "Segoe UI Variable", "Helvetica Neue", sans-serif;
    --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: var(--sans);
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(246, 184, 111, 0.16), transparent 32%),
        radial-gradient(circle at top right, rgba(57, 127, 184, 0.22), transparent 26%),
        linear-gradient(160deg, var(--bg) 0%, var(--bg-warm) 58%, #08111a 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 85%);
}

.shell {
    width: min(1180px, calc(100vw - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

.panel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(19, 37, 53, 0.9), rgba(8, 19, 29, 0.86));
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    animation: rise 420ms ease both;
}

.panel::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.04), transparent 24%, transparent 70%, rgba(255, 255, 255, 0.02));
}

.hero {
    padding: 2rem;
    margin-bottom: 1.25rem;
}

.hero.diagnostics-panel {
    padding: 0;
    margin-top: 1.25rem;
}

.workspace {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--grid-gap);
}

.workspace > .panel:nth-child(1) {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
}

.workspace > .panel:nth-child(4) {
    grid-column: 1 / -1;
}

.hero h1,
.section-heading h2 {
    margin: 0;
    font-family: var(--serif);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.hero h1 {
    max-width: 14ch;
    font-size: clamp(2.3rem, 5vw, 4.2rem);
    line-height: 0.95;
}

.lede {
    max-width: 58ch;
    margin: 1rem 0 1.5rem;
    color: var(--muted);
    line-height: 1.6;
    font-size: 1.02rem;
}

.eyebrow {
    margin: 0 0 0.5rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.77rem;
    font-weight: 700;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
    margin-bottom: 1rem;
}

.hero-card {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-label {
    display: block;
    color: var(--muted);
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
}

.diagnostics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.diagnostics li {
    padding: 0.9rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.diagnostics strong,
.hero-card strong {
    display: block;
    font-size: 1rem;
}

.diagnostics span {
    display: block;
    margin-top: 0.25rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.stack,
.output-panel {
    padding: 1.5rem;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.section-heading {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.5rem 1.5rem 0;
}

.field {
    display: grid;
    gap: 0.45rem;
}

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

.field input {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-sm);
    padding: 0.92rem 1rem;
    font: inherit;
    color: var(--text);
    background: rgba(0, 0, 0, 0.18);
    outline: none;
    transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}

.field input:focus {
    border-color: rgba(246, 184, 111, 0.8);
    background: rgba(0, 0, 0, 0.28);
    transform: translateY(-1px);
}

.hint {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.5;
}

code,
.code-block {
    font-family: var(--mono);
}

.actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
}

button {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 0.95rem 1.1rem;
    font: inherit;
    font-weight: 700;
    color: #0f1c27;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    cursor: pointer;
    transition: transform 160ms ease, filter 160ms ease, opacity 160ms ease;
}

button:hover:not(:disabled) {
    filter: brightness(1.04);
    transform: translateY(-1px);
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

button.secondary {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.pill {
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.07);
    color: var(--muted);
    font-size: 0.84rem;
    white-space: nowrap;
}

.code-block {
    min-height: 164px;
    margin: 0;
    padding: 0 1.5rem 1.5rem;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.55;
    color: #dbe6f1;
}

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

.status-log {
    display: grid;
    gap: 0.8rem;
    margin: 0;
    padding: 0 1.5rem 1.5rem 2.7rem;
}

.status-log li {
    padding-right: 0.5rem;
    color: #e5edf4;
    line-height: 1.5;
}

.status-log time {
    display: inline-block;
    min-width: 4.5rem;
    margin-right: 0.6rem;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.85rem;
}

.noscript {
    margin: 0;
    padding: 1rem;
    text-align: center;
    background: #261111;
    color: #fff2ee;
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 920px) {
    .workspace {
        grid-template-columns: 1fr;
    }

    .workspace > .panel:nth-child(1),
    .workspace > .panel:nth-child(4) {
        grid-column: auto;
        grid-row: auto;
    }
}

@media (max-width: 680px) {
    .shell {
        width: min(100vw - 1rem, 100%);
        padding-top: 1rem;
    }

    .hero,
    .stack,
    .output-panel {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero.diagnostics-panel {
        padding-left: 0;
        padding-right: 0;
    }

    .section-heading {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-grid,
    .diagnostics,
    .actions {
        grid-template-columns: 1fr;
    }

    .code-block {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .status-log {
        padding-left: 2.1rem;
        padding-right: 1rem;
    }
}