:root {
    --primary-color: #e3f2fd; /* Biru muda */
    --secondary-color: #f8f9fa; /* Abu-abu muda */
    --dark-color: #343a40; /* Abu-abu tua */
    --accent-color: #90caf9; /* Biru lebih terang */
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.bg-primary-custom {
    background-color: var(--primary-color);
}

.bg-secondary-custom {
    background-color: var(--secondary-color);
}

.text-dark-custom {
    color: var(--dark-color);
}

.nav-link {
    color: var(--dark-color);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--accent-color);
}

.hero-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.profile-img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border: 5px solid white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.portfolio-item {
    transition: transform 0.3s ease;
    margin-bottom: 30px;
}

.portfolio-item:hover {
    transform: translateY(-10px);
}

.portfolio-img {
    height: 200px;
    object-fit: cover;
    cursor: pointer;
    border-radius: 5px 5px 0 0;
}

.card {
    border: none;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

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

.social-icon {
    font-size: 1.5rem;
    margin: 0 10px;
    color: var(--dark-color);
    transition: color 0.3s ease;
}

.social-icon:hover {
    color: var(--accent-color);
}

.skill-badge {
    background-color: var(--accent-color);
    color: white;
    margin: 5px;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 500;
}

.timeline {
    position: relative;
    padding-left: 20px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--accent-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 15px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 2px solid var(--accent-color);
}