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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

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

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-login:hover {
    transform: translateY(-2px);
}

.message {
    margin-top: 20px;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-size: 14px;
}

.message.error {
    background-color: #fee;
    color: #c33;
}

.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: #2c3e50;
    color: white;
    display: flex;
    flex-direction: column;
}

.logo {
    padding: 30px 20px;
    border-bottom: 1px solid #34495e;
}

.logo h2 {
    font-size: 20px;
    margin-bottom: 5px;
}

.logo p {
    font-size: 12px;
    color: #95a5a6;
}

.nav-menu {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: #ecf0f1;
    text-decoration: none;
    transition: background 0.2s;
}

.nav-item:hover {
    background: #34495e;
}

.nav-item.active {
    background: #3498db;
}

.nav-item .icon {
    margin-right: 10px;
    font-size: 18px;
}

.user-info {
    padding: 20px;
    border-top: 1px solid #34495e;
}

.username {
    margin-bottom: 10px;
    font-weight: 600;
}

.logout-btn {
    color: #e74c3c;
    text-decoration: none;
    font-size: 14px;
}

.logout-btn:hover {
    text-decoration: underline;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.header {
    background: white;
    padding: 20px 30px;
    border-bottom: 1px solid #e0e0e0;
}

.header h1 {
    font-size: 24px;
    color: #333;
}

.content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.dashboard {
    max-width: 1200px;
    margin: 0 auto;
}

.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: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
}

.stat-icon {
    font-size: 40px;
    margin-right: 20px;
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: #333;
    margin-bottom: 5px;
}

.stat-label {
    color: #666;
    font-size: 14px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.card h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
}

.stat-large {
    font-size: 48px;
    font-weight: 700;
    color: #3498db;
    text-align: center;
}

.toolbar {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.search-box {
    display: flex;
    gap: 10px;
    flex: 1;
}

.search-box input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.search-box button,
.filter-box select {
    padding: 10px 20px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
}

.search-box button:hover {
    background: #2980b9;
}

.filter-box select {
    cursor: pointer;
}

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

.table thead {
    background: #f8f9fa;
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.table th {
    font-weight: 600;
    color: #555;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

.text-center {
    text-align: center;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.pagination button {
    padding: 8px 16px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
}

.pagination button:hover:not(:disabled) {
    background: #2980b9;
}

.pagination button:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.pagination span {
    color: #666;
    font-size: 14px;
}