:root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --text: #1d2330;
    --muted: #5f6b7a;
    --border: #dde1e7;
    --accent: #1f5fbf;
    --accent-text: #ffffff;
    --accent-soft: #e6eefb;
    --ok: #1e7b43;
    --ok-soft: #e4f4ea;
    --warn: #9a5b00;
    --warn-soft: #fff3dc;
    --danger: #b3261e;
    --danger-soft: #fde8e7;
    --disabled: #eef0f3;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.45;
    color: var(--text);
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #12151b;
        --surface: #1b2029;
        --text: #e7eaf0;
        --muted: #9aa5b4;
        --border: #2e3542;
        --accent: #6ea3ff;
        --accent-text: #0d1320;
        --accent-soft: #1d2b45;
        --ok: #6fd39a;
        --ok-soft: #173325;
        --warn: #f0b85a;
        --warn-soft: #3a2c12;
        --danger: #ff8a80;
        --danger-soft: #3d1c1a;
        --disabled: #232833;
        --shadow: none;
    }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); }
body.has-bar { padding-bottom: 84px; }
h1 { font-size: 1.5rem; line-height: 1.25; margin: .4rem 0 .6rem; }
h2 { font-size: 1.1rem; margin: 0 0 .6rem; }
a { color: var(--accent); }
p { margin: .4rem 0 .8rem; }
small, .muted { color: var(--muted); }
[hidden] { display: none !important; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 16px; padding-bottom: 32px; }

.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; gap: 12px; min-height: 52px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; margin-right: auto; }
.admin-nav { display: flex; gap: 4px 14px; flex-wrap: wrap; align-items: center; font-size: .95rem; }
.admin-nav a { text-decoration: none; color: var(--muted); padding: 4px 0; }
.admin-nav a.active { color: var(--text); font-weight: 600; border-bottom: 2px solid var(--accent); }
.admin-nav form { display: inline; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
.card.narrow { max-width: 480px; margin: 24px auto; }
.stack { display: grid; gap: 8px; }

input[type=text], input[type=password], input[type=search], input[type=number], input[type=file], select, textarea {
    font: inherit; color: inherit; background: var(--surface);
    border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; width: 100%;
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

button { font: inherit; cursor: pointer; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: 10px 16px; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.secondary { background: var(--accent-soft); border-color: transparent; color: var(--accent); font-weight: 600; }
button.danger { background: var(--danger-soft); border-color: transparent; color: var(--danger); font-weight: 600; }
button.small { padding: 4px 10px; font-size: .9rem; }
button.link { background: none; border: none; padding: 0; color: var(--accent); text-decoration: underline; }
button:disabled { cursor: not-allowed; opacity: .55; }

.alert { border-radius: 8px; padding: 10px 14px; margin: 0 0 16px; }
.alert p { margin: .2rem 0; }
.alert.error { background: var(--danger-soft); color: var(--danger); }
.alert.success { background: var(--ok-soft); color: var(--ok); }
.alert.info { background: var(--accent-soft); color: var(--text); }
.alert.warn { background: var(--warn-soft); color: var(--warn); }

.countdown { background: var(--warn-soft); border-radius: 8px; padding: 12px 14px; margin: 12px 0; }
.countdown p { margin: .2rem 0; }
.countdown-clock { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }

/* Login */
input.code-input { font-size: 1.3rem; letter-spacing: .12em; text-transform: uppercase; font-variant-numeric: tabular-nums; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
input.code-input::placeholder { letter-spacing: .12em; opacity: .45; }
code.access-code { font-size: 1.05rem; letter-spacing: .08em; font-weight: 600; }

/* Presentation selection */
.whoami { font-size: .95rem; color: var(--muted); margin-bottom: 0; }
.slot-nav { display: flex; gap: 6px; overflow-x: auto; padding: 8px 0; position: sticky; top: 0; background: var(--bg); z-index: 2; scrollbar-width: none; }
.slot-nav a { flex: none; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); text-decoration: none; color: var(--text); font-variant-numeric: tabular-nums; }
.slot-nav a.picked { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.slot { margin: 20px 0; scroll-margin-top: 56px; }
.slot h2 { display: flex; align-items: center; gap: 10px; font-variant-numeric: tabular-nums; }
.slot-picked { font-size: .85rem; color: var(--ok); font-weight: 600; }
.cards { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.pick { display: flex; gap: 12px; align-items: flex-start; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; cursor: pointer; }
.pick input { width: 22px; height: 22px; margin: 2px 0 0; flex: none; accent-color: var(--accent); }
.pick-body { display: grid; gap: 2px; min-width: 0; }
.pick-title { font-weight: 600; overflow-wrap: anywhere; }
.pick-meta { color: var(--muted); font-size: .9rem; }
.pick-hint { font-size: .85rem; color: var(--muted); }
.pick-hint:empty { display: none; }
.pick.is-checked { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.pick.is-blocked { opacity: .55; cursor: not-allowed; }
.pick.is-locked { background: var(--disabled); cursor: not-allowed; }
.pick.is-locked .pick-title, .pick.is-locked .pick-meta { opacity: .6; }
.pick .badge { justify-self: start; }
.steps { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 16px; padding: 0; margin: 8px 0 4px; font-size: .9rem; color: var(--muted); }
.steps a { color: inherit; }
.steps li.active { color: var(--text); font-weight: 600; }

.submit-bar { position: fixed; left: 0; right: 0; bottom: 0; background: var(--surface); border-top: 1px solid var(--border); box-shadow: 0 -2px 8px rgba(0, 0, 0, .06); z-index: 5; padding-bottom: env(safe-area-inset-bottom); }
.submit-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 68px; }
.counter { font-weight: 700; font-variant-numeric: tabular-nums; }
.counter.done { color: var(--ok); }

/* Confirmation */
.success-mark { font-size: 2.4rem; color: var(--ok); margin: 0; line-height: 1; }
.confirmation-list { padding-left: 1.4rem; display: grid; gap: 12px; }
.confirmation-list li { display: grid; gap: 2px; }
.confirmation-list .badge { justify-self: start; }
.when { font-weight: 600; color: var(--accent); }

/* Admin */
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.stat .label { font-size: .85rem; color: var(--muted); }
.stat .value { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; font-size: .8rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--disabled); color: var(--muted); }
.badge.open { background: var(--ok-soft); color: var(--ok); }
.badge.closed { background: var(--danger-soft); color: var(--danger); }
.badge.before { background: var(--warn-soft); color: var(--warn); }
.badge.first { background: var(--ok-soft); color: var(--ok); }
.badge.backup { background: var(--accent-soft); color: var(--accent); }
.badge.none { background: var(--warn-soft); color: var(--warn); }
.badge.auto { background: var(--warn-soft); color: var(--warn); }
.badge.admin { background: var(--disabled); color: var(--text); }
.row-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.row-actions form { margin: 0; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); background: var(--surface); position: sticky; top: 0; }
tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.slot-row td { background: var(--bg); font-weight: 700; }
tr.over td { background: var(--danger-soft); }
meter { width: 80px; height: 10px; vertical-align: middle; }
.capacity-form { display: flex; gap: 4px; align-items: center; }
.capacity-form input { width: 70px; padding: 4px 6px; }
.inline-form + .row-actions { margin-top: 12px; }
.inline-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; }
.inline-form label { display: grid; gap: 4px; font-size: .9rem; }
.inline-form select, .inline-form input[type=text], .inline-form input[type=search] { min-width: 200px; }
.check { display: flex; gap: 6px; align-items: center; font-size: .9rem; }
.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
details summary { cursor: pointer; font-weight: 600; }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 3px 0; }

@media (max-width: 560px) {
    h1 { font-size: 1.3rem; }
    .card { padding: 16px; }
    .submit-inner button { padding: 10px 12px; }
}

@media print {
    .site-header, .no-print, .submit-bar { display: none !important; }
    body { background: #fff; color: #000; }
    .card { border: none; box-shadow: none; padding: 0; }
}