:root {
    --bg-top: #f3efe5;
    --bg-bottom: #d8e6f2;
    --panel: rgba(255, 255, 255, 0.74);
    --panel-strong: rgba(255, 255, 255, 0.9);
    --line: rgba(19, 44, 66, 0.12);
    --ink: #132c42;
    --muted: #5f7385;
    --accent: #0f9d7a;
    --accent-deep: #0b7a61;
    --warm: #e88c37;
    --danger: #b64242;
    --shadow: 0 22px 64px rgba(19, 44, 66, 0.14);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --font-sans: "Aptos", "Segoe UI Variable", "Trebuchet MS", "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: var(--font-sans);
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(232, 140, 55, 0.18), transparent 32%),
        radial-gradient(circle at top right, rgba(15, 157, 122, 0.16), transparent 28%),
        linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 34px 34px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent);
}

code {
    font-family: "Consolas", "Cascadia Code", monospace;
    font-size: 0.96em;
}

.shell {
    width: min(1400px, calc(100vw - 40px));
    margin: 28px auto 40px;
    display: grid;
    gap: 22px;
}

.hero,
.status-strip,
.viewer-card,
.detail-card {
    border: 1px solid var(--line);
    background: var(--panel);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.hero {
    border-radius: var(--radius-lg);
    padding: 28px;
    display: grid;
    gap: 22px;
}

.hero__copy {
    display: grid;
    gap: 10px;
}

.eyebrow,
.viewer-kicker,
.detail-kicker {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--accent-deep);
}

.hero h1,
.viewer-card h2,
.detail-card h3 {
    margin: 0;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3.6rem);
    line-height: 0.96;
    max-width: 12ch;
}

.hero__text {
    margin: 0;
    max-width: 72ch;
    color: var(--muted);
    line-height: 1.6;
}

.upload-bar {
    display: grid;
    grid-template-columns: auto minmax(220px, 1fr) auto auto auto;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border-radius: var(--radius-md);
    background: var(--panel-strong);
    border: 1px solid rgba(19, 44, 66, 0.08);
}

.file-picker {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 18px;
    border-radius: 999px;
    background: #132c42;
    color: #fff;
    font-weight: 700;
    cursor: pointer;
}

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

.upload-meta {
    min-width: 0;
    display: grid;
    gap: 4px;
}

.upload-meta strong,
.upload-meta span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.upload-meta span {
    color: var(--muted);
    font-size: 0.95rem;
}

.primary-button,
.secondary-button {
    min-height: 52px;
    padding: 0 18px;
    border-radius: 999px;
    border: none;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.primary-button {
    background: linear-gradient(135deg, var(--accent), #0f8ac2);
    color: #fff;
}

.secondary-button {
    color: var(--ink);
    background: rgba(19, 44, 66, 0.06);
    border: 1px solid rgba(19, 44, 66, 0.08);
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button.is-disabled {
    opacity: 0.48;
    pointer-events: none;
}

.status-strip {
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
}

.status-pill {
    min-width: 112px;
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 0.92rem;
    font-weight: 700;
    text-align: center;
    background: rgba(19, 44, 66, 0.08);
}

.status-pill.is-idle {
    background: rgba(19, 44, 66, 0.08);
}

.status-pill.is-running {
    background: rgba(232, 140, 55, 0.18);
    color: #8f4d08;
}

.status-pill.is-completed {
    background: rgba(15, 157, 122, 0.18);
    color: var(--accent-deep);
}

.status-pill.is-failed {
    background: rgba(182, 66, 66, 0.16);
    color: var(--danger);
}

.status-message {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.viewer-grid,
.details-grid {
    display: grid;
    gap: 22px;
}

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

.details-grid {
    grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
}

.viewer-card,
.detail-card {
    border-radius: var(--radius-lg);
    padding: 18px;
}

.viewer-card--output {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(255, 255, 255, 0.72)),
        radial-gradient(circle at top right, rgba(232, 140, 55, 0.14), transparent 40%);
}

.viewer-card__header,
.detail-card__header {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 16px;
}

.viewer-state {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(19, 44, 66, 0.08);
    color: var(--muted);
    font-size: 0.92rem;
    white-space: nowrap;
}

.viewer-shell {
    position: relative;
    min-height: 500px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(19, 44, 66, 0.08);
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.95), rgba(221, 233, 241, 0.78)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.65), rgba(237, 244, 249, 0.92));
}

.viewer {
    position: absolute;
    inset: 0;
}

.viewer-empty {
    position: absolute;
    inset: auto 18px 18px 18px;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(19, 44, 66, 0.08);
    color: var(--muted);
    line-height: 1.5;
    pointer-events: none;
}

.viewer-empty.is-hidden {
    display: none;
}

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

.stage-list li {
    display: grid;
    grid-template-columns: 18px 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(19, 44, 66, 0.06);
}

.stage-list li::before {
    content: "";
    width: 12px;
    height: 12px;
    border-radius: 999px;
    background: rgba(19, 44, 66, 0.18);
}

.stage-list li.is-active::before {
    background: var(--warm);
}

.stage-list li.is-complete::before {
    background: var(--accent);
}

.stage-label {
    font-weight: 700;
}

.stage-caption {
    color: var(--muted);
    font-size: 0.92rem;
}

.metrics-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.metrics-placeholder {
    grid-column: 1 / -1;
    margin: 0;
    color: var(--muted);
}

.metric-card {
    padding: 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(19, 44, 66, 0.08);
}

.metric-card__label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 0.88rem;
}

.metric-card__value {
    display: block;
    font-size: 1.18rem;
    font-weight: 700;
}

.detail-note {
    margin: 14px 0 0;
    color: var(--muted);
    line-height: 1.55;
}

@media (max-width: 1120px) {
    .upload-bar,
    .viewer-grid,
    .details-grid {
        grid-template-columns: 1fr;
    }

    .upload-bar {
        justify-items: stretch;
    }

    .primary-button,
    .secondary-button,
    .file-picker {
        width: 100%;
    }
}

@media (max-width: 720px) {
    .shell {
        width: min(100vw - 20px, 100%);
        margin: 10px auto 24px;
    }

    .hero,
    .viewer-card,
    .detail-card {
        padding: 16px;
    }

    .status-strip {
        flex-direction: column;
        align-items: flex-start;
    }

    .viewer-shell {
        min-height: 360px;
    }

    .metrics-panel {
        grid-template-columns: 1fr;
    }
}