:root {
    --bg-body: #0b0b0f;
    --bg-sidebar: #111118;
    --bg-surface: #16161d;
    --bg-elevated: #1c1c26;
    --bg-hover: #1c1c26;
    --border: #222230;
    --border-light: #2a2a3a;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --green: #22c55e;
    --green-dim: rgba(34,197,94,0.15);
    --red: #ef4444;
    --red-dim: rgba(239,68,68,0.15);
    --yellow: #f59e0b;
    --yellow-dim: rgba(245,158,11,0.15);
    --blue: #3b82f6;
    --blue-dim: rgba(59,130,246,0.15);
    --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Layout */
.layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    padding: 1.5rem 0;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 0 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0.75rem;
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0 0.75rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s;
    text-decoration: none;
}

.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent); color: #fff; }

.nav-icon {
    font-size: 0.75rem;
    width: 1.25rem;
    text-align: center;
}

.sidebar-footer {
    margin-top: auto;
    padding: 1rem 1.25rem 0;
    border-top: 1px solid var(--border);
}

.user-info {
    margin-bottom: 0.75rem;
}

.user-name {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.user-email {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Main */
.main {
    padding: 2rem 2.5rem;
    overflow-y: auto;
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.stat-card.accent-green .stat-value { color: var(--green); }
.stat-card.accent-red .stat-value { color: var(--red); }
.stat-card.accent-blue .stat-value { color: var(--blue); }

/* Sections */
.section {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.section-header h2 { font-size: 1rem; font-weight: 600; }

.section-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* Tables */
.table-wrap { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table thead th {
    text-align: left;
    padding: 0.625rem 0.75rem;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border);
}

.data-table tbody td {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--border);
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--bg-hover); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
}

.btn:hover { background: var(--bg-hover); border-color: var(--border-light); color: var(--text-primary); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-sm { padding: 0.3125rem 0.75rem; font-size: 0.75rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }

.btn-danger {
    background: transparent;
    border-color: var(--red);
    color: var(--red);
}

.btn-danger:hover { background: var(--red-dim); }

/* Status Pills */
.status-pill {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.pill-green { background: var(--green-dim); color: var(--green); }
.pill-red { background: var(--red-dim); color: var(--red); }
.pill-yellow { background: var(--yellow-dim); color: var(--yellow); }
.pill-blue { background: var(--blue-dim); color: var(--blue); }

/* Forms */
.form-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 640px;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

.form-row { display: flex; gap: 1rem; }
.flex-1 { flex: 1; }

.input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.15s;
    font-family: inherit;
}

.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--text-muted); }
select.input { cursor: pointer; }
.textarea { resize: vertical; min-height: 80px; }

.input-readonly {
    padding: 0.5rem 0.75rem;
    background: var(--bg-body);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding-top: 0.5rem;
}

.form-error {
    padding: 0.625rem 0.75rem;
    background: var(--red-dim);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: 6px;
    color: var(--red);
    font-size: 0.8125rem;
    margin-bottom: 1rem;
}

.form-success {
    padding: 0.625rem 0.75rem;
    background: var(--green-dim);
    border: 1px solid rgba(34,197,94,0.2);
    border-radius: 6px;
    color: var(--green);
    font-size: 0.8125rem;
    margin-bottom: 1rem;
}

.form-footer {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Search */
.search-row {
    margin-bottom: 1rem;
    max-width: 320px;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.375rem;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-body);
    padding: 1rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.login-brand {
    text-align: center;
    margin-bottom: 2rem;
}

.login-brand .brand-text {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.brand-sub {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Login */
.login-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.btn-oauth {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    border-radius: 6px;
    transition: all 0.15s;
    text-decoration: none;
}

.btn-oauth:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--text-primary);
}

.btn-oauth svg { flex-shrink: 0; }

/* Utility */
.text-muted { color: var(--text-muted); }
.font-mono { font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace; font-size: 0.8125rem; }
.empty-hint { text-align: center; padding: 2rem; color: var(--text-muted); font-size: 0.875rem; }
.empty-hint a { color: var(--accent); }

/* Blazor */
#blazor-error-ui { display: none; }

@media (max-width: 768px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .main { padding: 1.25rem; }
    .form-row { flex-direction: column; }
}