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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

/* Login Screen */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-container h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #667eea;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.error-message {
    color: #e74c3c;
    margin-top: 10px;
    font-size: 14px;
    display: none;
}

.error-message.show {
    display: block;
}

/* Admin Panel */
.admin-panel {
    min-height: 100vh;
    background: #f5f7fa;
}

.header {
    background: white;
    padding: 20px 40px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    color: #667eea;
    font-size: 24px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-card p {
    color: #667eea;
    font-size: 32px;
    font-weight: bold;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    background: white;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: #f0f0f0;
}

.tab-btn.active {
    background: #667eea;
    color: white;
}

.tab-content {
    display: none;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.tab-content.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    color: #333;
    font-size: 20px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #e74c3c;
    color: white;
    padding: 8px 16px;
    font-size: 12px;
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

thead {
    background: #f8f9fa;
}

th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #555;
    border-bottom: 2px solid #e0e0e0;
}

td {
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
}

tbody tr:hover {
    background: #f8f9fa;
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

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

.status-inactive {
    background: #f8d7da;
    color: #721c24;
}

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

.action-buttons {
    display: flex;
    gap: 8px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #333;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    line-height: 20px;
}

.close:hover {
    color: #000;
}

.config-preview {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 6px;
    font-family: monospace;
    font-size: 12px;
    word-break: break-all;
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .container {
        padding: 15px;
    }

    .section-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

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

    table {
        font-size: 12px;
    }

    th, td {
        padding: 10px;
    }
}