/* Import Google Fonts untuk tampilan yang lebih modern */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

/* CSS Variables untuk kemudahan kustomisasi warna */
:root {
    --primary-color: #4F46E5;
    --primary-hover: #4338CA;
    --secondary-color: #6B7280;
    --success-color: #10B981;
    --success-hover: #059669;
    --danger-color: #EF4444;
    --danger-hover: #DC2626;
    --warning-color: #F59E0B;
    --warning-hover: #D97706;
    --light-color: #F9FAFB;
    --dark-color: #111827;
    --text-color: #111827;
    --text-muted: #6B7280;
    --bg-color: #F9FAFB;
    --card-bg: #FFFFFF;
    --border-color: #E5E7EB;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Dark Mode Variables */
body.dark {
    --text-color: #F9FAFB;
    --text-muted: #9CA3AF;
    --bg-color: #0F172A;
    --card-bg: #1F2937;
    --border-color: #374151;
    --dark-color: #F9FAFB;
    --light-color: #1E293B;
    background-color: var(--bg-color) !important;
    color: var(--text-color) !important;
}

body.dark * {
    color: inherit;
}

body.dark h1,
body.dark h2,
body.dark h3,
body.dark h4,
body.dark h5,
body.dark h6 {
    color: var(--text-color) !important;
}

body.dark p,
body.dark span,
body.dark div {
    color: var(--text-color) !important;
}

/* Reset dan Body Styling Dasar */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

/* Navbar Styling */
.navbar {
    background-color: var(--card-bg);
    color: var(--dark-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border-bottom: 1px solid var(--border-color);
}
.navbar h1 { font-size: 1.5rem; }
.navbar a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}
.navbar a:hover { text-decoration: underline; }

/* Container Utama */
.container {
    padding: 2rem;
    max-width: 1100px;
    margin: auto;
}

/* Card Styling */
.card {
    background-color: var(--card-bg);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

body.dark .card {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

body.dark .card:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7);
}

.card-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    margin: 0;
    color: var(--dark-color);
    font-weight: 700;
    font-size: 1.5rem;
}

body.dark .card-header h2 {
    color: var(--text-color);
}

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

.form-group label { 
    display: block; 
    margin-bottom: 0.5rem; 
    font-weight: 600; 
    color: var(--dark-color);
    font-size: 0.875rem;
}

body.dark .form-group label {
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 1rem;
    color: var(--dark-color);
    background-color: var(--card-bg);
    transition: border-color 0.2s, box-shadow 0.2s;
    min-height: 44px; /* Touch-friendly */
    -webkit-appearance: none;
    appearance: none;
}

body.dark .form-control {
    color: var(--text-color);
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

body.dark .form-control:focus {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* Button Styling - High Contrast & Clear */
.btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 44px; /* Touch-friendly */
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    white-space: nowrap;
}

.btn:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary { 
    background-color: var(--primary-color); 
    color: white; 
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover { 
    background-color: var(--primary-hover); 
    border-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
    transform: translateY(-1px);
}

body.dark .btn-primary {
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.5);
}

body.dark .btn-primary:hover {
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.6);
}

.btn-success { 
    background-color: var(--success-color); 
    color: white; 
    border-color: var(--success-color);
}

.btn-success:hover { 
    background-color: var(--success-hover); 
    border-color: var(--success-hover);
}

.btn-danger { 
    background-color: var(--danger-color); 
    color: white; 
    border-color: var(--danger-color);
}

.btn-danger:hover { 
    background-color: var(--danger-hover); 
    border-color: var(--danger-hover);
}

.btn-warning { 
    background-color: var(--warning-color); 
    color: var(--dark-color); 
    border-color: var(--warning-color);
}

.btn-warning:hover { 
    background-color: var(--warning-hover); 
    border-color: var(--warning-hover);
}

body.dark .btn-warning {
    color: var(--text-color);
}

/* Table Styling */
.table-wrapper { 
    overflow-x: auto; 
    -webkit-overflow-scrolling: touch;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
}

.data-table th, .data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    vertical-align: middle;
    color: var(--dark-color);
}

body.dark .data-table th,
body.dark .data-table td {
    color: var(--text-color);
}

.data-table thead th {
    background-color: var(--light-color);
    font-weight: 700;
    color: var(--dark-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border-color);
}

body.dark .data-table thead th {
    background-color: var(--bg-color);
    color: var(--text-color);
    border-bottom-color: var(--border-color);
}

.data-table tbody tr:nth-child(even) { 
    background-color: var(--light-color); 
}

body.dark .data-table tbody tr:nth-child(even) {
    background-color: var(--bg-color);
}

.data-table tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.05);
}

body.dark .data-table tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.1);
}

/* Aksi di dalam Tabel */
.actions a {
    margin-right: 0.5rem;
    text-decoration: none;
    color: var(--secondary-color);
    font-size: 1.2rem;
}
.actions .edit { color: var(--warning-color); }
.actions .delete { color: var(--danger-color); }
.actions a:hover { opacity: 0.7; }

/* Alert / Notifikasi */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 2px solid transparent;
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert-success { 
    background-color: rgba(16, 185, 129, 0.1); 
    color: var(--success-hover); 
    border-color: var(--success-color);
}

body.dark .alert-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.alert-danger { 
    background-color: rgba(239, 68, 68, 0.1); 
    color: var(--danger-hover); 
    border-color: var(--danger-color);
}

body.dark .alert-danger {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-hover);
    border-color: var(--warning-color);
}

body.dark .alert-warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--info-hover);
    border-color: var(--info-color);
}

body.dark .alert-info {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--info-color);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Mobile First - Base Styles */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 1rem;
        max-width: 100%;
    }
    
    .card {
        padding: 1rem 1.5rem;
        margin-bottom: 1rem;
    }
    
    .card-header h2 {
        font-size: 1.25rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .btn:last-child {
        margin-bottom: 0;
    }
    
    .form-control {
        font-size: 16px; /* Prevent zoom on iOS */
        padding: 0.875rem;
    }
    
    .data-table {
        font-size: 0.875rem;
        min-width: 600px;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.5rem 0.75rem;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    
    .container {
        padding: 0.75rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }
    
    .data-table {
        font-size: 0.75rem;
    }
    
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1.125rem; }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 960px;
    }
}

/* Desktop */
@media (min-width: 1025px) {
    .container {
        max-width: 1200px;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn,
    .card,
    .form-control {
        border-width: 2px;
    }
    
    .btn-primary {
        border-width: 3px;
    }
}