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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.hidden {
    display: none !important;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Login */
.login-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-card h1 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #219a52;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

/* Header */
header {
    background: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.5rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#current-user {
    opacity: 0.8;
}

/* Tabs */
.tabs {
    background: white;
    border-bottom: 1px solid #ddd;
    padding: 0 2rem;
    display: flex;
    gap: 0;
}

.tab {
    padding: 1rem 1.5rem;
    border: none;
    background: none;
    font-size: 1rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    color: #666;
    transition: all 0.2s;
}

.tab:hover {
    color: #333;
}

.tab.active {
    color: #3498db;
    border-bottom-color: #3498db;
}

/* Stats */
.stats-bar {
    background: white;
    padding: 1.5rem 2rem;
    display: flex;
    gap: 3rem;
    border-bottom: 1px solid #eee;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #2c3e50;
}

.stat-label {
    font-size: 0.85rem;
    color: #7f8c8d;
}

/* Tab Content */
.tab-content {
    padding: 2rem;
}

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

.toolbar h2 {
    font-size: 1.25rem;
    color: #2c3e50;
}

/* Tables */
table {
    width: 100%;
    background: white;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
    font-size: 0.85rem;
    text-transform: uppercase;
}

tr:hover {
    background: #fafafa;
}

.license-key {
    font-family: monospace;
    font-size: 0.9rem;
    color: #2c3e50;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-active {
    background: #d4edda;
    color: #155724;
}

.badge-blocked {
    background: #f8d7da;
    color: #721c24;
}

.badge-expired {
    background: #fff3cd;
    color: #856404;
}

.badge-inactive {
    background: #e2e3e5;
    color: #383d41;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

/* Actions */
.actions {
    display: flex;
    gap: 0.5rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* License Key Display */
.license-key-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

.license-key-display code {
    flex: 1;
    font-size: 0.9rem;
    word-break: break-all;
}

/* Error */
.error {
    color: #e74c3c;
    margin-top: 1rem;
    padding: 0.75rem;
    background: #fdf0ef;
    border-radius: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .stats-bar {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .tab-content {
        padding: 1rem;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }
}