/* Reset dan Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 2rem;
}

nav {
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    padding: 8px 16px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: rgba(255,255,255,0.2);
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Welcome Section */
.welcome-section {
    text-align: center;
    margin-bottom: 2rem;
}

.welcome-section h2 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    color: #667eea;
    margin-bottom: 1rem;
}

/* Form Styles */
.form-container, .login-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.login-form {
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

/* Button Styles */
.btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: transform 0.3s;
}

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

.btn-accept {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    padding: 8px 16px;
    font-size: 14px;
    margin-right: 5px;
}

.btn-reject {
    background: linear-gradient(135deg, #ff9800 0%, #f57c00 100%);
    padding: 8px 16px;
    font-size: 14px;
    margin-right: 5px;
}

.btn-delete {
    background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
    padding: 8px 16px;
    font-size: 14px;
}

/* Alert Messages */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-weight: bold;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Table Styles */
.table-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.data-table th {
    background-color: #f8f9fa;
    font-weight: bold;
    color: #333;
}

.data-table tr:hover {
    background-color: #f5f5f5;
}

/* Status Styles */
.status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
}

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

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

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

/* Action Buttons */
.action-buttons {
    white-space: nowrap;
}

/* Admin Welcome */
.admin-welcome {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    text-align: center;
}

.admin-welcome h2 {
    color: #667eea;
}

/* Login Info */
.login-info {
    margin-top: 2rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 5px;
    border-left: 4px solid #667eea;
}

.login-info p {
    margin: 0.5rem 0;
    font-size: 14px;
}

/* Footer */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    nav a {
        display: block;
        margin: 5px 0;
    }
    
    .info-cards {
        grid-template-columns: 1fr;
    }
    
    .form-container,
    .login-container {
        padding: 1rem;
    }
    
    .data-table {
        font-size: 14px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px;
    }
    
    .action-buttons .btn {
        display: block;
        margin: 2px 0;
        text-align: center;
    }
}