:root {
    --bg: #f2f2f7;
    --card: #ffffff;
    --text: #1c1c1e;
    --muted: #6e6e73;
    --border: #e5e5ea;
    --accent: #007aff;
    --accent-text: #ffffff;
    --ok: #248a3d;
    --ok-bg: #e3f5e8;
    --warn: #b25000;
    --warn-bg: #fff1dc;
    --bad: #d70015;
    --bad-bg: #ffe5e7;
    --highlight: #eaf3ff;
    --radius: 14px;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --card: #1c1c1e;
        --text: #f5f5f7;
        --muted: #98989d;
        --border: #38383a;
        --accent: #0a84ff;
        --ok: #30d158;
        --ok-bg: #0f2e17;
        --warn: #ff9f0a;
        --warn-bg: #33240a;
        --bad: #ff453a;
        --bad-bg: #3a1210;
        --highlight: #0b2440;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.45 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 28px; font-weight: 700; margin: 0 0 4px; letter-spacing: -0.02em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
h2 { font-size: 19px; font-weight: 600; margin: 0 0 14px; }
h3 { font-size: 15px; font-weight: 600; margin: 20px 0 8px; }
code { font: 13px/1.4 ui-monospace, "SF Mono", Menlo, monospace; background: var(--bg); padding: 2px 6px; border-radius: 6px; word-break: break-all; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.ok { color: var(--ok); }
.warn { color: var(--warn); }
.bad { color: var(--bad); }
.nowrap { white-space: nowrap; }
.dim { opacity: 0.55; }

/* Top bar */
.topbar {
    position: sticky; top: 0; z-index: 10;
    background: color-mix(in srgb, var(--card) 85%, transparent);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
}
.topbar-inner { max-width: 1200px; margin: 0 auto; padding: 0 16px; height: 52px; display: flex; align-items: center; gap: 24px; }
.brand { font-weight: 700; color: var(--text); font-size: 17px; }
.topbar nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topbar nav a { color: var(--muted); padding: 6px 12px; border-radius: 8px; white-space: nowrap; }
.topbar nav a.active, .topbar nav a:hover { color: var(--text); background: var(--bg); text-decoration: none; }
.logout { margin: 0; }

.container { max-width: 1200px; margin: 0 auto; padding: 24px 16px 64px; }

.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.back { display: inline-block; font-size: 14px; margin-bottom: 6px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; }

/* Cards */
.card { background: var(--card); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.card.highlight { background: var(--highlight); }
.card.empty, .empty { text-align: center; padding: 40px 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 16px; }
.grid-2 > .card { margin-bottom: 0; }
.grid-2 + .card, .grid-2 + .grid-2 { margin-top: 16px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border-radius: var(--radius); padding: 16px 18px; display: flex; flex-direction: column; }
.stat-value { font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--muted); font-size: 13px; }

/* Tables */
.table-wrap { overflow-x: auto; }
.card.table-wrap { padding: 8px 0; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; padding: 10px 16px; border-bottom: 1px solid var(--border); }
td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
table.compact td, table.compact th { padding: 8px 10px; }
.card > table.compact td:first-child, .card > table.compact th:first-child { padding-left: 0; }
tr.row-link { cursor: pointer; }
tr.row-link:hover td { background: var(--bg); }

/* Key-value */
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; margin: 0 0 16px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

/* Badges */
.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.badge-active { color: var(--ok); background: var(--ok-bg); }
.badge-grace { color: var(--warn); background: var(--warn-bg); }
.badge-suspended { color: var(--bad); background: var(--bad-bg); }

/* Buttons & forms */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    font: inherit; font-weight: 500; padding: 8px 16px; border-radius: 10px;
    border: none; background: var(--bg); color: var(--accent); cursor: pointer; white-space: nowrap;
}
.btn:hover { text-decoration: none; filter: brightness(0.96); }
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-danger { color: var(--bad); background: var(--bad-bg); }
.btn-small { padding: 5px 12px; font-size: 13px; }
button.link { background: none; border: none; color: var(--accent); font: inherit; cursor: pointer; padding: 0; }

input, select, textarea {
    font: inherit; color: var(--text); background: var(--card);
    border: 1px solid var(--border); border-radius: 10px; padding: 9px 12px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--accent) 30%, transparent); border-color: var(--accent); }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; color: var(--muted); }
.hint { font-weight: 400; }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 6px; }
.inline-form input { flex: 1 1 160px; width: auto; }
form + form { margin-top: 12px; }

.filters { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; align-items: end; }
.filter-actions { display: flex; gap: 8px; }

.flash { padding: 12px 16px; border-radius: 12px; margin-bottom: 16px; }
.flash-success { background: var(--ok-bg); color: var(--ok); }
.flash-error { background: var(--bad-bg); color: var(--bad); }

.pager { display: flex; justify-content: center; align-items: center; gap: 16px; margin-top: 16px; }
.notes { white-space: pre-wrap; color: var(--muted); }
.secret { font-size: 13px; }

/* Auth pages */
body.auth { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 16px; }
.auth-box { background: var(--card); border-radius: 20px; padding: 32px; width: 100%; max-width: 400px; }
.auth-logo { font-weight: 700; color: var(--muted); margin-bottom: 20px; }
.auth-box h1 { margin-bottom: 8px; }
.stack { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.code-input { font-size: 28px; letter-spacing: 0.3em; text-align: center; font-variant-numeric: tabular-nums; }
.qr { display: flex; justify-content: center; padding: 16px; background: #fff; border-radius: 12px; margin: 16px 0; }
.qr img, .qr canvas { width: 200px; height: 200px; }
details { margin-bottom: 8px; }
summary { cursor: pointer; color: var(--accent); }

@media (max-width: 640px) {
    .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: 24px; }
    .kv { grid-template-columns: 1fr; gap: 2px; }
    .kv dd { margin-bottom: 8px; }
}