:root {
    color-scheme: light;
    --bg: #f4f7fb;
    --card: #fff;
    --text: #172033;
    --muted: #64748b;
    --line: #dbe3ef;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #15803d;
    --warning: #a16207;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1180px, calc(100% - 32px)); margin: 28px auto; }
.topbar { background: #111827; color: #fff; }
.topbar-inner {
    width: min(1180px, calc(100% - 32px));
    min-height: 62px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 22px;
}
.brand { color: #fff; font-size: 19px; font-weight: 750; margin-right: auto; }
.topbar a { color: #dbeafe; }
.topbar form { margin: 0; }
.topbar button { background: transparent; border-color: #64748b; padding: 7px 12px; }
.grid { display: grid; grid-template-columns: minmax(280px, 360px) 1fr; gap: 22px; align-items: start; }
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 7px 20px rgba(15, 23, 42, .05);
}
.auth-card { width: min(430px, calc(100% - 32px)); margin: 10vh auto; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 16px; }
h1 { font-size: 25px; }
h2 { font-size: 20px; }
.muted { color: var(--muted); }
label { display: block; font-weight: 650; margin: 13px 0 5px; }
input, select, button {
    width: 100%;
    min-height: 40px;
    border: 1px solid #b9c5d6;
    border-radius: 7px;
    padding: 8px 10px;
    font: inherit;
}
input:focus, select:focus { outline: 3px solid #bfdbfe; border-color: var(--primary); }
button {
    width: auto;
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    cursor: pointer;
    font-weight: 700;
    padding-inline: 16px;
}
button:hover { background: var(--primary-dark); }
button.danger { background: var(--danger); border-color: var(--danger); }
button.secondary { background: #475569; border-color: #475569; }
.button-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.inline { display: inline; }
.filters { display: grid; grid-template-columns: minmax(180px, 1fr) 170px auto; gap: 8px; margin-bottom: 14px; }
.filters button { min-width: 90px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border-bottom: 1px solid var(--line); padding: 10px 9px; text-align: left; vertical-align: middle; }
th { background: #f8fafc; color: #334155; white-space: nowrap; }
td.actions { min-width: 215px; }
td.actions form { display: inline-block; margin: 2px; }
td.actions button { min-height: 32px; padding: 4px 9px; font-size: 13px; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.badge { display: inline-block; border-radius: 99px; padding: 3px 9px; font-size: 12px; font-weight: 750; }
.badge.active { color: var(--success); background: #dcfce7; }
.badge.inactive { color: #475569; background: #e2e8f0; }
.badge.expired { color: var(--danger); background: #fee2e2; }
.badge.admin { color: #6d28d9; background: #ede9fe; }
.badge.user { color: #075985; background: #e0f2fe; }
.alert { border-radius: 8px; padding: 11px 14px; margin-bottom: 16px; border: 1px solid; }
.alert.success { background: #f0fdf4; border-color: #86efac; color: #166534; }
.alert.error { background: #fef2f2; border-color: #fca5a5; color: #991b1b; }
.secret { font-family: ui-monospace, monospace; font-weight: 750; overflow-wrap: anywhere; }
.pagination { display: flex; justify-content: space-between; margin-top: 15px; }
.pagination a { border: 1px solid var(--line); border-radius: 7px; padding: 7px 11px; background: #fff; }
.stat { color: var(--muted); margin: 0 0 14px; }

@media (max-width: 850px) {
    .grid { grid-template-columns: 1fr; }
    .topbar-inner { flex-wrap: wrap; padding: 12px 0; gap: 12px; }
    .brand { width: 100%; }
}
@media (max-width: 580px) {
    .container { width: min(100% - 18px, 1180px); margin: 14px auto; }
    .card { padding: 14px; }
    .filters { grid-template-columns: 1fr; }
    .filters button { width: 100%; }
}