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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #667eea;
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    margin: 1rem 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0.25rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #56ab2f 0%, #a8e6cf 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #ff416c 0%, #ff4b2b 100%);
    color: white;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    margin: 1rem 0;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #e1e5e9;
}

.table th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
}

.table tr:hover {
    background-color: #f8f9fa;
}

/* Search Box */
.search-container {
    position: relative;
    margin-bottom: 2rem;
}

.search-box {
    width: 100%;
    padding: 12px 16px 12px 48px;
    border: 2px solid #e1e5e9;
    border-radius: 25px;
    font-size: 1rem;
    background: white;
    transition: all 0.3s ease;
}

.search-box:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 2rem;
    margin: 2rem 0;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Stats Cards */
.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
}

.stats-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stats-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Image Upload */
.image-upload {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.image-upload:hover {
    border-color: #667eea;
    background-color: #f8f9ff;
}

.image-preview {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
    margin: 1rem 0;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin: 1rem 0;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .card {
        padding: 1.5rem;
        margin: 0.5rem 0;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn {
        width: 100%;
        margin: 0.25rem 0;
    }
    
    .grid {
        gap: 1rem;
    }
    
    .stats-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 5px;
    }
    
    .card {
        padding: 1rem;
        border-radius: 10px;
    }
    
    .form-control {
        padding: 10px 12px;
    }
    
    .btn {
        padding: 10px 20px;
    }
    
    .table th,
    .table td {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
        color: #ecf0f1;
    }
    
    .card {
        background: rgba(52, 73, 94, 0.95);
        color: #ecf0f1;
    }
    
    .form-control {
        background: rgba(52, 73, 94, 0.8);
        border-color: #5a6c7d;
        color: #ecf0f1;
    }
    
    .table {
        background: rgba(52, 73, 94, 0.95);
        color: #ecf0f1;
    }
    
    .table td {
        border-color: #5a6c7d;
    }
}