:root {
    color-scheme: light;
    --bg: #f8fafc;
    --panel: #ffffff;
    --text: #1e293b;
    --muted: #475569;
    --line: #e2e8f0;
    --primary: #2563eb;
    --primary-strong: #1d4ed8;
    --accent: #f97316;
    --danger: #dc2626;
    --ok: #15803d;
    --shadow: 0 18px 42px rgba(30, 41, 59, .08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--bg);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

a {
    color: var(--primary);
}

.shell {
    width: min(1400px, calc(100% - 32px));
    margin: 0 auto;
    padding: 24px 0 48px;
}

.site-header,
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

.brand {
    color: var(--text);
    font-weight: 800;
    text-decoration: none;
    letter-spacing: .02em;
}

.role,
.badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 3px 9px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted);
    background: #fff;
    font-size: 12px;
    font-weight: 700;
}

.badge.ok {
    border-color: #bbf7d0;
    background: #f0fdf4;
    color: var(--ok);
}

.badge.warn {
    border-color: #fed7aa;
    background: #fff7ed;
    color: #c2410c;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
    gap: 32px;
    align-items: center;
    min-height: calc(100dvh - 120px);
}

h1,
h2 {
    margin: 0;
    line-height: 1.12;
}

h1 {
    font-size: clamp(34px, 6vw, 68px);
    letter-spacing: 0;
}

h2 {
    font-size: 20px;
    margin-bottom: 16px;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.lead {
    max-width: 660px;
    color: var(--muted);
    font-size: 18px;
}

.narrow {
    width: min(480px, 100%);
    margin: 72px auto;
}

.panel {
    margin-bottom: 18px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.grid {
    display: grid;
    gap: 18px;
}

.grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.metrics div {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
}

.metrics strong {
    display: block;
    font-size: 28px;
    line-height: 1;
}

.metrics span {
    color: var(--muted);
    font-size: 13px;
}

.module-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 18px;
}

.module-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 7px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    cursor: pointer;
    font-size: 14px;
    font-weight: 800;
    text-decoration: none;
    transition: border-color .2s ease, color .2s ease, background .2s ease;
}

.module-nav a:hover,
.module-nav a:focus {
    border-color: #bfdbfe;
    background: #eff6ff;
    color: var(--primary-strong);
}

.seat-groups {
    display: grid;
    gap: 10px;
}

.seat-group {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    overflow: hidden;
}

.seat-group summary {
    display: grid;
    grid-template-columns: 24px minmax(260px, 1fr) minmax(120px, .35fr) minmax(90px, .25fr) auto;
    gap: 12px;
    align-items: center;
    min-height: 54px;
    padding: 12px 14px;
    cursor: pointer;
    font-weight: 800;
    list-style: none;
    transition: background .2s ease;
}

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

.seat-group summary::before {
    content: "+";
    width: 24px;
    height: 24px;
    display: inline-grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--primary);
    background: #f8fafc;
}

.seat-group[open] summary::before {
    content: "-";
}

.seat-group summary:hover,
.seat-group summary:focus {
    background: #f8fafc;
}

.seat-title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    overflow-wrap: anywhere;
}

.seat-meta {
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.seat-group .table-wrap {
    border-top: 1px solid var(--line);
}

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

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

.form-grid.compact {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: end;
}

.span-2 {
    grid-column: 1 / -1;
}

label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    min-height: 42px;
    padding: 9px 11px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: 3px solid rgba(37, 99, 235, .18);
    border-color: var(--primary);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 9px 14px;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    transition: background .2s ease, border-color .2s ease, color .2s ease;
}

.button.primary {
    background: var(--primary);
    color: #fff;
}

.button.primary:hover {
    background: var(--primary-strong);
}

.button.secondary {
    background: #eff6ff;
    color: var(--primary-strong);
    border-color: #bfdbfe;
}

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

.text-link,
.link-button {
    border: 0;
    background: transparent;
    color: var(--primary);
    cursor: pointer;
    font: inherit;
    font-weight: 800;
    text-decoration: none;
}

.flash {
    margin-bottom: 18px;
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #1d4ed8;
    font-weight: 700;
}

.flash.error {
    border-color: #fecaca;
    background: #fef2f2;
    color: var(--danger);
}

.flash.info {
    border-color: #fed7aa;
    background: #fff7ed;
    color: #c2410c;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

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

th,
td {
    padding: 11px 10px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
    font-size: 14px;
}

th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .04em;
}

td.wide {
    min-width: 280px;
}

.secret-list {
    display: grid;
    gap: 12px;
    margin: 0;
}

.secret-list div {
    display: grid;
    gap: 6px;
}

.secret-list dt {
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
}

.secret-list dd {
    margin: 0;
}

code {
    display: inline-block;
    max-width: 100%;
    padding: 4px 7px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #f8fafc;
    overflow-wrap: anywhere;
}

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

.preserve {
    white-space: pre-wrap;
}

@media (max-width: 920px) {
    .hero,
    .grid.two,
    .form-grid,
    .form-grid.compact,
    .metrics {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
        padding-top: 36px;
    }

    .seat-group summary {
        grid-template-columns: 24px 1fr;
    }

    .seat-group .seat-meta,
    .seat-group .badge {
        grid-column: 2;
    }
}

@media (max-width: 560px) {
    .shell {
        width: min(100% - 20px, 1400px);
        padding-top: 14px;
    }

    .topbar,
    .site-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .panel {
        padding: 16px;
    }
}