:root {
    --bg-color: #0f172a;
    --text-color: #cbd5e1;
    --primary-color: #2dd4bf;
    --secondary-color: #1e293b;
    --accent-color: #334155;
    --font-main: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    background-image: url("gambar/bgPattern.png");
    background-size: cover;
    background-position: center; 
    background-repeat: no-repeat; 
    color: var(--text-color);
    line-height: 1.6;
}


.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;    
}

.section {
    padding: 60px 0;
    scroll-margin-top: 90px;
}

.main-header {
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: box-shadow 0.3s ease;
}

.main-header.scrolled {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-link {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.logo-link:hover {
    color: var(--primary-color);
}

.desktop-nav {
    display: none; /* biar hilang di tampilan mobil */
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1rem;
    padding: 5px 0;
    margin: 0 15px;
    position: relative;
    transition: color 0.3s;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-icon {
    width: 24px;
    height: 24px;
    stroke: #fff;
}

.mobile-menu {
    display: none;
    background-color: var(--bg-color);
    text-align: center;
}
.mobile-menu.active {
    display: block;
}

.mobile-nav-link {
    display: block;
    padding: 15px;
    text-decoration: none;
    color: var(--text-color);
    border-top: 1px solid var(--accent-color);
}
.mobile-nav-link:hover {
    background-color: var(--secondary-color);
}

.hero-section {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    margin-top: 50px;
}

.hero-content {
    max-width: 700px;
}

.hero-greeting {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}


.hero-description {
    font-size: 0.9rem;  
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

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

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-color);
    border: 2px solid var(--primary-color);
}
.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}
.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--bg-color);
}

.section-heading {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
}

.section-heading span {
    color: var(--primary-color);
    margin-right: 10px;
}

.section-heading::after {
    content: '';
    display: block;
    height: 1px;
    width: 150px;
    background-color: var(--accent-color);
    margin-left: 20px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

.about-text p {
    margin-bottom: 15px;
}

.profile-pic-container {
    max-width: 300px;
    margin: 0 auto;
    border-radius: 10px;
    padding: 8px;
    background-color: var(--secondary-color);
    transition: transform 0.3s, box-shadow 0.3s;
}
.profile-pic-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2), 0 0 15px rgba(45, 212, 191, 0.2);
}

.profile-pic {
    width: 100%;
    border-radius: 6px;
    display: block;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
}

.project-card {
    background-color: var(--secondary-color);
    padding: 25px;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2), 0 0 20px rgba(45, 212, 191, 0.2);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.card-description {
    margin-bottom: 20px;
}

.card-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    background-color: var(--accent-color);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 15px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
    text-align: center;
}

.skill-card {
    background-color: var(--secondary-color);
    padding: 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: transform 0.3s, color 0.3s;
}
.skill-card:hover {
    transform: translateY(-5px);
    color: var(--primary-color);
}

.contact-section {
    text-align: center;
}
.contact-intro {
    max-width: 600px;
    margin: 0 auto 30px;
}
.contact-btn {
    font-size: 1.1rem;
}

.main-footer {
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--accent-color);
    background-color: #0f172a;
}
.social-links {
    margin-bottom: 15px;
}
.social-links a {
    margin: 0 10px;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
}
.social-links a:hover {
    color: var(--primary-color);
}

.scroll-top-btn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: var(--bg-color);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 100;
    transition: transform 0.3s, background-color 0.3s;
}
.scroll-top-btn:hover {
    transform: scale(1.1);
}

.experience-image {
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.experience-image img {
    width: 100%;
    height: 200px;
    max-height: 250px;
    object-fit: cover;
    display: block;
    border-radius: 12px;
}

.experience-card {
    margin-top: 30px;
}

.experience-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2), 0 0 20px rgba(45, 212, 191, 0.2);
    border-radius: 12px;
}

.experience-title {
    margin-top: 20px;
}
@media (min-width: 768px) {
    .mobile-menu-btn, .mobile-menu {
        display: none;
    }
    .desktop-nav {
        display: flex;
    }
    .hero-name {
        font-size: 4.5rem;
    }
    .about-grid {
        grid-template-columns: 3fr 2fr;
    }
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .experience-image {
        flex: 1;
        height: 100%;
        filter: grayscale(100%);
    }
    .experience-image img {
        height: 100%;
    }
    .experience-content {
        flex: 2;
    }
}

@media (min-width: 992px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* --- CERTIFICATIONS SECTION STYLES --- */
.certifications-grid {
    display: grid;
    grid-template-columns: 1fr; /* One column on mobile */
    gap: 25px;
}

.certification-card {
    background-color: #1e293b; /* slate-800 */
    border: 1px solid #334155; /* slate-700 */
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.cert-logo {
    flex-shrink: 0;
}

.cert-logo img {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    background-color: #ffffff;
    padding: 5px;
}

.cert-details {
    flex-grow: 1;
}

.cert-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 5px;
}

.cert-issuer, .cert-date {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 3px;
}

.cert-link {
    display: inline-block;
    margin-top: 10px;
    color: #2dd4bf;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.cert-link:hover {
    color: #5eead4;
}

@media (min-width: 768px) {
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}