:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #94a3b8;
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.nav-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.nav-brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    text-decoration: none;
    white-space: nowrap;
}
.nav-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    transition: background 0.15s;
}
.nav-links a:hover { background: var(--bg); }
.nav-user {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.inline-form { display: inline; }
.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 0.85rem;
    text-decoration: underline;
    padding: 0;
}

/* Container */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.15s;
    line-height: 1.5;
    font-family: inherit;
}
.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary {
    background: var(--card-bg);
    color: var(--text);
    border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg); }
.btn-danger {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}
.btn-danger:hover { background: var(--danger-hover); }
.btn-block { width: 100%; text-align: center; }
.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--card-bg);
    cursor: pointer;
    font-family: inherit;
}
.btn-small.btn-danger {
    border-color: var(--danger);
    color: var(--danger);
}
.actions { margin-bottom: 1rem; }

/* Search */
.search-form {
    margin-bottom: 1.25rem;
}
.search-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.search-input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    background: var(--card-bg);
    color: var(--text);
    transition: border-color 0.15s;
}
.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.filter-row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.filter-select {
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-family: inherit;
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
}
.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}
.result-count { margin-top: 0.5rem; }

/* Alert */
.alert {
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}
.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}
.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

/* Auth page */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
}
.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}
.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.auth-card h1 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}
.auth-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}
.auth-link {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.auth-link a { color: var(--primary); }

/* Table */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}
th, td {
    text-align: left;
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
tr:hover td { background: #f1f5f9; }
td a { color: var(--primary); text-decoration: none; }
td a:hover { text-decoration: underline; }

/* Empty state */
.empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}
.empty p { margin-bottom: 1rem; }

/* Form */
.form { max-width: 600px; }
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
    color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select,
.input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    background: var(--card-bg);
    color: var(--text);
    transition: border-color 0.15s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
.input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.form-inline {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    max-width: 400px;
}
.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

/* Detail card */
.detail-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}
.detail-row {
    display: flex;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border);
    gap: 0.75rem;
}
.detail-row:last-child { border-bottom: none; }
.detail-label {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-muted);
    min-width: 7rem;
    flex-shrink: 0;
}
.detail-value {
    font-size: 0.9rem;
    word-break: break-word;
}

.muted { color: var(--text-muted); font-size: 0.85rem; }

/* Portal */
.portal-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.portal-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: box-shadow 0.15s;
}
.portal-item:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.portal-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: var(--text);
}
.portal-icon { font-size: 1.5rem; }
.portal-info { display: flex; flex-direction: column; gap: 0.15rem; }
.portal-title { font-weight: 600; font-size: 1rem; }
.portal-desc { font-size: 0.85rem; color: var(--text-muted); }
.portal-footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); }

/* Mobile */
@media (max-width: 640px) {
    .nav-inner { padding: 0.5rem 0.75rem; }
    .container { padding: 1rem 0.75rem; }
    .form-row { grid-template-columns: 1fr; }
    .form-inline { max-width: 100%; }
    .detail-label { min-width: 5rem; }
    table { font-size: 0.8rem; }
    th, td { padding: 0.5rem; }
    .search-row { flex-wrap: wrap; }
    .search-row .btn { width: auto; }
}

/* 404 Error page */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
    margin: 0;
}
.error-container {
    width: 100%;
    max-width: 480px;
    padding: 1rem;
}
.error-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 3rem 2rem;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    text-align: center;
}
.error-code {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--primary);
    opacity: 0.25;
    margin-bottom: 0.5rem;
    letter-spacing: -0.05em;
}
.error-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text);
}
.error-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin-bottom: 2rem;
}
.error-actions {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    margin-bottom: 2rem;
}
.error-actions .btn {
    padding: 0.625rem 1rem;
    font-size: 0.9rem;
}
.error-footer {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.error-footer a {
    color: var(--primary);
    text-decoration: none;
}
.error-footer a:hover {
    text-decoration: underline;
}

/* Flash messages */
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.flash.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}
.flash.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* Bulk edit modal */
.modal {
    position: fixed;
    z-index: 100;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.4);
}
.modal-content {
    background: var(--card-bg);
    margin: 10% auto;
    padding: 1.5rem;
    border-radius: var(--radius);
    max-width: 500px;
    position: relative;
}
.close {
    position: absolute;
    right: 1rem; top: 0.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}
.close:hover { color: var(--text); }
.modal h2 {
    margin-bottom: 0.75rem;
}
.modal .form-group {
    margin-bottom: 0.75rem;
}
.modal label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}
.modal .form-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    background: var(--bg);
}
.modal .btn {
    margin-top: 0.5rem;
}

/* Bulk edit button disabled state */
#bulkEditBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Admin badge */
.admin-badge {
    background: var(--primary);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-left: 0.5rem;
}