:root {
    --bg: #0f0f0f;
    --surface: #18181b;
    --surface-2: #27272a;
    --text: #f4f4f5;
    --text-muted: #a1a1aa;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #3f3f46;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

.app-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.8rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-title {
    font-size: 1.3rem;
    margin: 0;
    font-weight: 700;
}

.app-title a {
    color: var(--text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius);
    transition: 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--surface-2);
    color: var(--text);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem;
}

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

.page-header h1 {
    margin: 0;
    font-size: 1.6rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.2rem;
}

.stat-card {
    text-decoration: none;
    color: var(--text);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.3rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.table-card {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 0.8rem;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

tr:hover td {
    background: var(--surface-2);
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--surface-2);
}

.badge.success { background: rgba(34,197,94,0.2); color: var(--success); }
.badge.warning { background: rgba(245,158,11,0.2); color: var(--warning); }
.badge.danger { background: rgba(239,68,68,0.2); color: var(--danger); }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    border-radius: var(--radius);
    border: none;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: 0.2s;
    background: var(--surface-2);
    color: var(--text);
}

.btn:hover { filter: brightness(1.1); }

.btn-primary { background: var(--primary); }
.btn-success { background: var(--success); color: #000; }
.btn-danger { background: var(--danger); }
.btn-warning { background: var(--warning); color: #000; }

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

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group small {
    display: block;
    color: var(--text-muted);
    margin-top: 0.2rem;
    font-size: 0.8rem;
}

.form-control {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

.actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.2rem;
}

.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.alert.success { background: rgba(34,197,94,0.15); color: var(--success); border: 1px solid rgba(34,197,94,0.3); }
.alert.error { background: rgba(239,68,68,0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
.alert.warning { background: rgba(245,158,11,0.15); color: var(--warning); border: 1px solid rgba(245,158,11,0.3); }

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    width: 100%;
    max-width: 360px;
}

.login-card h1 {
    margin: 0 0 1.5rem;
    font-size: 1.5rem;
    text-align: center;
}

.login-form label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
}

.login-form input {
    width: 100%;
    margin-bottom: 1rem;
    padding: 0.6rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
}

.login-form button {
    width: 100%;
}

/* Scan */
.scan-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.scan-card {
    width: 100%;
    max-width: 500px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
}

.scan-card h1 {
    margin-top: 0;
}

.scan-mode {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 1rem 0;
    padding: 1rem;
    border-radius: var(--radius);
    background: var(--surface-2);
}

.scan-mode.in { color: var(--success); }
.scan-mode.out { color: var(--warning); }

.scan-input {
    width: 100%;
    font-size: 1.5rem;
    padding: 1rem;
    text-align: center;
    margin-bottom: 1rem;
}

.scan-hint {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.scan-input-wrap {
    margin-top: 1rem;
}

.scan-input {
    font-size: 1.5rem;
    padding: 1rem;
    text-align: center;
    letter-spacing: 0.05em;
}

.scan-mode-display {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    padding: 1rem;
    border-radius: var(--radius);
    background: var(--surface-2);
    color: var(--text-muted);
    margin-bottom: 1rem;
    border: 2px solid var(--border);
}

.scan-mode-display.ready {
    color: var(--text-muted);
}

.scan-mode-display.in {
    color: var(--success);
    border-color: var(--success);
    background: rgba(34,197,94,0.1);
}

.scan-mode-display.out {
    color: var(--warning);
    border-color: var(--warning);
    background: rgba(245,158,11,0.1);
}

.preset-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.preset {
    flex: 1;
    min-width: 80px;
    justify-content: center;
}

.scan-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.scan-modal.hidden,
.toast.hidden {
    display: none !important;
}

.scan-modal-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.scan-modal-content h2 {
    margin-top: 0;
}

.modal-info {
    background: var(--surface-2);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.modal-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.2rem;
}

.modal-actions .btn {
    flex: 1;
    justify-content: center;
}

.toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    z-index: 1100;
    max-width: 400px;
    font-weight: 500;
}

.toast.success { background: var(--success); color: #000; }
.toast.error { background: var(--danger); color: #fff; }

.help-text {
    display: block;
    color: var(--text-muted);
    margin-top: 0.2rem;
    font-size: 0.8rem;
}

.debug-panel {
    margin-top: 1.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.debug-panel h3 {
    margin-top: 0;
    color: var(--warning);
}

.debug-log {
    font-family: monospace;
    font-size: 0.85rem;
    max-height: 200px;
    overflow-y: auto;
    background: #000;
    padding: 0.5rem;
    border-radius: var(--radius);
}

.debug-log div {
    border-bottom: 1px solid var(--border);
    padding: 0.2rem 0;
    color: var(--text);
}

.hidden {
    display: none !important;
}