:root {
    --bg: #0a0a0a;
    --surface: #151515;
    --border: #2a2a2a;
    --text: #e8e8e8;
    --muted: #888;
    --accent: #9e15ae;
    --accent-light: #e151f0;
    --success: #2dc653;
    --danger: #ef4444;
    --radius: 12px;
    --max-w: 1100px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    text-decoration: underline;
}

/* Header */
body>header {
    border-bottom: 1px solid var(--border);
    padding: 0.8rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-w);
    margin: 0 auto;
}

body>header>div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

body>header a.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    user-select: none;
    text-decoration: none;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

body>header a.logo:hover {
    text-decoration: none;
    opacity: 0.8;
}

body>header a.logo span {
    color: var(--accent);
}

body>header button.toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
}

body>header nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

body>header nav a {
    color: var(--muted);
    font-size: 0.85rem;
}

body>header nav a:hover {
    color: var(--text);
    text-decoration: none;
}

body>header nav a.active {
    color: var(--accent);
}

body>header nav a.logout {
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    background: #333;
    color: #ccc;
    border-radius: 8px;
}

/* Content */
main {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 1.5rem 2rem;
}

main>h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

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

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

.page-header h2 {
    font-size: 1.2rem;
    margin-bottom: 0;
}

/* Dashboard stats */
.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    flex: 1 1 22%;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    user-select: none;
}

.stat-label {
    color: var(--muted);
    font-size: 0.85rem;
    user-select: none;
}

/* Admin list (table wrapper) */
.admin-list {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.admin-list table {
    width: 100%;
    border-collapse: collapse;
}

.admin-list table th {
    color: var(--muted);
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: left;
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--border);
    user-select: none;
}

.admin-list table td {
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.admin-list table td.muted {
    color: var(--muted);
}

.admin-list table td.detail {
    color: var(--muted);
    font-size: 0.8rem;
}

.admin-list table td.truncate {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-list table th.actions,
.admin-list table td.actions {
    text-align: right;
}

.admin-list table td.empty {
    text-align: center;
    color: var(--muted);
    padding: 2rem;
}

.admin-list table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge-sm {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-green {
    background: rgba(45, 198, 83, 0.15);
    color: var(--success);
}

.badge-red {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-gray {
    background: rgba(136, 136, 136, 0.15);
    color: var(--muted);
}

.badge-purple {
    background: rgba(158, 21, 174, 0.15);
    color: var(--accent);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    user-select: none;
    text-decoration: none;
}

.btn:hover {
    opacity: 0.85;
    text-decoration: none;
}

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

.btn-outline {
    border: 1px solid var(--border);
    color: var(--text);
    background: transparent;
}

.btn-sm {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
}

.btn-sm.danger {
    color: var(--danger);
    border-color: var(--danger);
}

.btn-sm.success {
    color: var(--success);
    border-color: var(--success);
}

/* Row actions */
.row-actions {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    justify-content: flex-end;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    color: var(--muted);
    font-size: 0.85rem;
    user-select: none;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group select option {
    background: var(--bg);
    color: var(--text);
}

/* Admin form card */
.admin-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.admin-form.inline form {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.admin-form.inline .form-group {
    margin-bottom: 0;
    flex: 1;
}

/* Flash messages */
.flash-container {
    min-height: 0;
    margin-bottom: 0.5rem;
}

.flash-container:empty {
    display: none;
}

.flash {
    padding: 0.6rem 1rem;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: flashIn 0.3s ease;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.flash-success {
    background: rgba(45, 198, 83, 0.15);
    border: 1px solid var(--success);
}

.flash-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--danger);
}

.flash-close {
    cursor: pointer;
    font-size: 1.4rem;
    color: var(--muted);
    padding: 0 0.3rem;
    user-select: none;
}

.flash-close:hover {
    color: var(--text);
}

@keyframes flashIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Login flash */
.login-flash {
    max-width: 400px;
    margin: 1rem auto 0;
}

/* Login */
.login-form {
    max-width: 400px;
    margin: 6rem auto 0;
}

.login-form h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.login-form h1 span {
    color: var(--accent);
}

.login-form p {
    color: var(--muted);
    text-align: center;
    margin-bottom: 2rem;
}

.login-form button.btn {
    width: 100%;
    padding: 0.7rem;
    font-size: 1rem;
    margin-top: 0.5rem;
}

/* Two column layout */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.grid-2 .full {
    grid-column: 1 / -1;
}

/* QR preview */
.qr-preview {
    text-align: center;
    padding: 1rem;
}

.qr-preview img {
    max-width: 200px;
    border-radius: 8px;
    background: #fff;
    padding: 8px;
}

.qr-preview .short-code {
    display: block;
    margin-top: 0.5rem;
    font-family: monospace;
    color: var(--accent);
    font-size: 1.1rem;
}

.qr-meta {
    text-align: center;
    margin-top: 0.5rem;
}

.qr-meta-line {
    font-size: 0.8rem;
    margin-bottom: 0.3rem;
}

.section-title {
    margin-top: 1rem;
}

/* Mono text */
.mono {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    body>header {
        flex-wrap: wrap;
        padding: 0.6rem 1rem;
    }

    body>header button.toggle {
        display: block;
    }

    body>header nav {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0.3rem;
        padding-top: 0.6rem;
        border-top: 1px solid var(--border);
        margin-top: 0.5rem;
    }

    body>header nav.open {
        display: flex;
    }

    main {
        padding: 1rem;
    }

    .stat {
        flex-basis: 42%;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .admin-list {
        padding: 0.8rem;
        overflow-x: auto;
    }

    .admin-list table {
        font-size: 0.8rem;
    }

    .admin-list table th,
    .admin-list table td {
        padding: 0.4rem 0.5rem;
    }

    .admin-form.inline form {
        flex-direction: column;
    }
}