:root {
    --color-bg: #f5f5f4;
    --color-surface: #ffffff;
    --color-border: #e7e5e4;
    --color-text: #1c1917;
    --color-text-muted: #57534e;
    --color-accent: #44403c;
    --color-accent-hover: #292524;
    --color-error: #b91c1c;
    --color-error-dark: #991b1b;
    --color-error-bg: #fef2f2;
    --color-error-border: #fecaca;
    --color-success: #15803d;
    --color-success-bg: #f0fdf4;
    --color-success-border: #bbf7d0;
    --color-warning: #92400e;
    --color-warning-bg: #fef3c7;
    --color-info: #1e40af;
    --color-info-bg: #dbeafe;
    --radius: 6px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }
html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-bg);
}

.boot { padding: 2rem; color: var(--color-text-muted); }

.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.shell-sidebar {
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    padding: 1rem;
    gap: 0.75rem;
}
.shell-brand { font-weight: 700; font-size: 1.1rem; padding: 0 0.5rem; margin-bottom: 0.5rem; }
.shell-nav { display: flex; flex-direction: column; gap: 0.15rem; flex: 1; }
.shell-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
}
.shell-nav a:hover { background: var(--color-bg); color: var(--color-text); }
.shell-nav a.active { background: var(--color-bg); color: var(--color-text); font-weight: 600; }
.shell-sidebar-footer { padding: 0.5rem; border-top: 1px solid var(--color-border); display: flex; flex-direction: column; gap: 0.35rem; }
.shell-user-email { color: var(--color-text-muted); font-size: 0.8rem; word-break: break-all; }

.shell-main { padding: 1.5rem; max-width: 1200px; width: 100%; margin: 0 auto; }

h3 { margin: 1.5rem 0 0.75rem; font-size: 1rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; gap: 1rem; flex-wrap: wrap; }
.page-header h1 { margin: 0; font-size: 1.5rem; }

.toolbar { display: flex; gap: 0.5rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.toolbar input, .toolbar select {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.45rem 0.6rem;
    font-size: 0.85rem;
    background: var(--color-surface);
}

.table-wrap { overflow-x: auto; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.table th, .table td { padding: 0.6rem 0.75rem; text-align: left; border-bottom: 1px solid var(--color-border); }
.table th { background: var(--color-bg); color: var(--color-text-muted); text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.05em; font-weight: 600; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: var(--color-bg); }
.table a { color: var(--color-text); text-decoration: none; }
.table a:hover { text-decoration: underline; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .actions { text-align: right; white-space: nowrap; }

.badge { display: inline-block; padding: 0.15rem 0.5rem; font-size: 0.75rem; border-radius: 999px; font-weight: 600; }
.badge-muted { background: var(--color-bg); color: var(--color-text-muted); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-error { background: var(--color-error-bg); color: var(--color-error); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }

.pager { display: flex; gap: 0.5rem; align-items: center; justify-content: center; padding: 1rem 0; }
.pager span { color: var(--color-text-muted); font-size: 0.85rem; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.75rem; margin-bottom: 1.5rem; }
.kpi { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1rem; }
.kpi-label { font-size: 0.75rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.kpi-value { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 0.25rem; }
.kpi-sub { font-size: 0.75rem; color: var(--color-text-muted); margin-top: 0.25rem; }

.alert-strip { background: var(--color-error-bg); color: var(--color-error); border: 1px solid var(--color-error-border); border-radius: var(--radius); padding: 0.5rem 0.75rem; margin-bottom: 0.5rem; font-size: 0.85rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.alert-strip a { color: var(--color-error); text-decoration: underline; }

.detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 1rem; align-items: start; }
@media (max-width: 800px) { .detail-grid { grid-template-columns: 1fr; } .shell { grid-template-columns: 1fr; } .shell-sidebar { border-right: 0; border-bottom: 1px solid var(--color-border); } }

.card h2 { margin-top: 0; font-size: 1.1rem; }
dl.kv { display: grid; grid-template-columns: 1fr 2fr; gap: 0.4rem 1rem; margin: 0; font-size: 0.85rem; }
dl.kv dt { color: var(--color-text-muted); }
dl.kv dd { margin: 0; }

.btn-danger { background: var(--color-error); }
.btn-danger:hover { background: var(--color-error-dark); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-bg); }

.tabs { display: flex; gap: 0.25rem; border-bottom: 1px solid var(--color-border); margin-bottom: 1rem; }
.tabs .tab { background: transparent; color: var(--color-text-muted); border: 0; padding: 0.6rem 1rem; cursor: pointer; font-size: 0.9rem; border-bottom: 2px solid transparent; }
.tabs .tab:hover { color: var(--color-text); }
.tabs .tab-active { color: var(--color-text); border-bottom-color: var(--color-text); font-weight: 600; }

.form-row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.form-row input, .form-row select { padding: 0.45rem 0.6rem; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: 0.9rem; background: var(--color-surface); }

.images-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 0.75rem; margin-top: 0.75rem; }
.image-tile { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 0.5rem; background: var(--color-surface); display: flex; flex-direction: column; gap: 0.35rem; }
.image-tile img { width: 100%; height: 120px; object-fit: cover; border-radius: var(--radius); background: var(--color-bg); }
.image-tile-name { font-size: 0.8rem; word-break: break-all; }
.image-tile-size { font-size: 0.75rem; color: var(--color-text-muted); }

.totp-secret { background: var(--color-bg); padding: 0.6rem 0.75rem; border-radius: var(--radius); margin: 0.5rem 0; }
.totp-mono { font-family: ui-monospace, "SF Mono", monospace; font-size: 0.95rem; }

.recovery-codes { list-style: none; padding: 0; margin: 1rem 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.35rem; font-family: ui-monospace, "SF Mono", monospace; font-size: 0.9rem; }
.recovery-codes li { background: var(--color-bg); padding: 0.35rem 0.6rem; border-radius: var(--radius); }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.login-screen {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: var(--color-bg);
}
.login-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    width: 100%;
    max-width: 360px;
    box-shadow: var(--shadow-md);
}
.login-title { font-size: 1.25rem; font-weight: 600; margin: 0 0 1.5rem; }

.form-field { display: grid; gap: 0.35rem; margin-bottom: 1rem; }
.form-field label { font-size: 0.8rem; color: var(--color-text-muted); }
.form-field input {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.55rem 0.7rem;
    font-size: 0.95rem;
    background: var(--color-surface);
}
.form-field input:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: -1px;
}

.btn {
    background: var(--color-accent);
    color: white;
    border: 0;
    border-radius: var(--radius);
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.15s;
}
.btn:hover { background: var(--color-accent-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-link { background: transparent; color: var(--color-text-muted); padding: 0.25rem 0.5rem; }
.btn-link:hover { background: transparent; color: var(--color-text); }

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid var(--color-error-border);
    border-radius: var(--radius);
    padding: 0.55rem 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}
.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid var(--color-success-border);
    border-radius: var(--radius);
    padding: 0.55rem 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

#blazor-error-ui {
    background: #fef2f2;
    color: var(--color-error);
    border-top: 1px solid var(--color-error);
    padding: 0.75rem 1.5rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: none;
}
#blazor-error-ui .reload, #blazor-error-ui .dismiss { margin-left: 1rem; color: var(--color-error); cursor: pointer; }