:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-bg: #f7f8fa;
    --color-surface: #ffffff;
    --color-border: #e2e5ea;
    --color-text: #1f2430;
    --color-muted: #6b7280;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 28px 0;
}
.header-inner {
    display: flex;
    align-items: center;
    gap: 16px;
}
.site-logo {
    max-height: 56px;
    max-width: 160px;
    object-fit: contain;
}
.site-header h1 {
    margin: 0 0 4px;
    font-size: 1.5rem;
}
.site-description {
    margin: 0;
    color: var(--color-muted);
}

main.container { padding-top: 28px; padding-bottom: 60px; }

/* Verify banner */
.verify-banner {
    background: #eef2ff;
    color: #3730a3;
    border: 1px solid #c7d2fe;
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.verify-banner-error {
    background: #fef2f2;
    color: var(--color-danger);
    border-color: #fecaca;
}

/* Toolbar / filters */
.toolbar { margin-bottom: 18px; }
.filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    align-items: center;
}
.filter-form label {
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-right: 4px;
}
.filter-form select, select, input[type=text], input[type=password], input[type=file] {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    background: var(--color-surface);
}

/* File table */
.file-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.file-table th, .file-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}
.file-table th {
    background: #fafbfc;
    font-weight: 600;
    color: var(--color-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.file-table tr:last-child td { border-bottom: none; }
.muted { color: var(--color-muted); }
.empty-state { color: var(--color-muted); padding: 40px 0; text-align: center; }

.btn-download {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    padding: 6px 14px;
    border-radius: var(--radius);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
}
.btn-download:hover { background: var(--color-primary-dark); }

.site-footer {
    padding: 20px 0;
    color: var(--color-muted);
    font-size: 0.85rem;
    text-align: center;
}

/* ---------------- Admin ---------------- */
.admin-body { background: var(--color-bg); }
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar {
    width: 220px;
    background: #111827;
    color: #e5e7eb;
    padding: 24px 0;
    flex-shrink: 0;
}
.admin-sidebar .brand {
    padding: 0 20px 20px;
    font-weight: 700;
    font-size: 1.05rem;
    border-bottom: 1px solid #1f2937;
    margin-bottom: 12px;
}
.admin-sidebar nav a {
    display: block;
    padding: 10px 20px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.92rem;
}
.admin-sidebar nav a:hover, .admin-sidebar nav a.active {
    background: #1f2937;
    color: #fff;
}
.admin-sidebar .sidebar-footer {
    margin-top: 24px;
    padding: 12px 20px;
    border-top: 1px solid #1f2937;
    font-size: 0.85rem;
}
.admin-sidebar .sidebar-footer a { color: #93c5fd; }

.admin-main {
    flex: 1;
    padding: 32px 36px;
}
.admin-main h1 { margin-top: 0; }

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px 20px;
}
.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; }
.stat-card .stat-label { color: var(--color-muted); font-size: 0.85rem; margin-top: 4px; }

.panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 22px 24px;
    margin-bottom: 24px;
}
.panel h2 { margin-top: 0; font-size: 1.1rem; }

.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
}
.data-table th { color: var(--color-muted); font-size: 0.78rem; text-transform: uppercase; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
}
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.88rem; font-weight: 500; }
.form-group .hint { color: var(--color-muted); font-size: 0.8rem; margin-top: 4px; }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 200px; }

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-admin { background: #dbeafe; color: #1e40af; }
.badge-manager { background: #f3e8ff; color: #6b21a8; }

.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 18px; font-size: 0.9rem; }
.flash-error { background: #fef2f2; color: var(--color-danger); border: 1px solid #fecaca; }
.flash-success { background: #f0fdf4; color: var(--color-success); border: 1px solid #bbf7d0; }

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
}
.login-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    width: 100%;
    max-width: 360px;
}
.login-box h1 { font-size: 1.3rem; text-align: center; margin-top: 0; }
.login-box .btn-primary { width: 100%; margin-top: 8px; }

@media (max-width: 720px) {
    .admin-shell { flex-direction: column; }
    .admin-sidebar { width: 100%; }
    .admin-main { padding: 20px; }
}