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

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #f56565;
    --info: #4299e1;
    --bg-light: #ffffff;
    --bg-gray: #f8f9fa;
    --text-dark: #2d3748;
    --text-gray: #718096;
    --border: #e2e8f0;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --radius: 12px;
    --transition: 0.3s ease;
}

[data-theme="dark"] {
    --primary: #818cf8;
    --secondary: #a78bfa;
    --bg-light: #1a202c;
    --bg-gray: #2d3748;
    --text-dark: #f7fafc;
    --text-gray: #a0aec0;
    --border: #4a5568;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-light);
    transition: all var(--transition);
}

.loading {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s;
}

.loading.hide {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    margin-top: 1rem;
    font-size: 1.2rem;
}

header {
    position: sticky;
    top: 0;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 100;
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-secondary {
    background: var(--bg-gray);
    color: var(--text-dark);
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

.sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
    background: var(--bg-gray);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.search-box {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-light);
    color: var(--text-dark);
    font-size: 0.9rem;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-gray);
}

.filter-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.filter-section h4 {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.filter-btn {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg-light);
    color: var(--text-gray);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
}

.menu {
    list-style: none;
}

.menu-item {
    margin-bottom: 0.5rem;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius);
    color: var(--text-gray);
    text-decoration: none;
    transition: all var(--transition);
}

.menu-link:hover, .menu-link.active {
    background: var(--primary);
    color: white;
    transform: translateX(4px);
}

.content {
    background: var(--bg-gray);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.hero {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 3rem;
    border-bottom: 2px solid var(--border);
}

.hero h1 {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-gray);
}

.section {
    margin-bottom: 3rem;
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.card p {
    color: var(--text-gray);
    line-height: 1.6;
}

.alert {
    padding: 1.5rem;
    border-radius: var(--radius);
    margin: 1.5rem 0;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.alert-info {
    background: rgba(66, 153, 225, 0.1);
    border-left: 4px solid var(--info);
}

.alert-success {
    background: rgba(72, 187, 120, 0.1);
    border-left: 4px solid var(--success);
}

.alert-warning {
    background: rgba(237, 137, 54, 0.1);
    border-left: 4px solid var(--warning);
}

.alert i {
    font-size: 1.5rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-gray);
    margin-top: 0.5rem;
}

.quality-distribution {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.quality-bar {
    margin-bottom: 1.5rem;
}

.quality-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.quality-progress {
    height: 30px;
    background: var(--bg-gray);
    border-radius: 999px;
    overflow: hidden;
}

.quality-fill {
    height: 100%;
    transition: width 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.skill-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: var(--radius);
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sort-controls select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-gray);
    color: var(--text-dark);
}

.view-controls {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-gray);
    color: var(--text-gray);
    cursor: pointer;
    transition: all var(--transition);
}

.view-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.skill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    border-color: var(--primary);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.skill-id {
    font-size: 0.875rem;
    color: var(--text-gray);
    font-family: monospace;
}

.skill-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.skill-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-primary { background: rgba(102, 126, 234, 0.1); color: var(--primary); }
.badge-success { background: rgba(72, 187, 120, 0.1); color: var(--success); }
.badge-warning { background: rgba(237, 137, 54, 0.1); color: var(--warning); }
.badge-info { background: rgba(66, 153, 225, 0.1); color: var(--info); }
.badge-danger { background: rgba(245, 101, 101, 0.1); color: var(--danger); }

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.page-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-light);
    color: var(--text-dark);
    cursor: pointer;
    transition: all var(--transition);
}

.page-btn:hover:not(:disabled) {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-weight: 600;
    color: var(--text-dark);
}

.profesi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.profesi-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    cursor: pointer;
    text-align: center;
}

.profesi-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    border: 2px solid var(--primary);
}

.profesi-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.profesi-count {
    color: var(--text-gray);
}

.accordion {
    margin: 1.5rem 0;
}

.accordion-item {
    background: var(--bg-light);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.accordion-header {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition);
}

.accordion-header:hover {
    background: var(--bg-gray);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
    max-height: 2000px;
}

.accordion-body {
    padding: 0 1.5rem 1.5rem;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tip-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    text-align: center;
}

.tip-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 1000;
    padding: 2rem;
    overflow-y: auto;
}

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

.modal-content {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 2rem;
    max-width: 800px;
    width: 100%;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-gray);
}

.modal-close:hover {
    color: var(--danger);
}

.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 99;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

footer {
    background: var(--bg-gray);
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
    margin-top: 3rem;
}

.loading-placeholder {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
}

.loading-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-gray);
    font-weight: 600;
}

@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .card-grid, .skill-grid, .profesi-grid {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    nav {
        padding: 1rem;
    }

    .container {
        padding: 1rem;
    }
}