:root {
    --primary-bg: #0d1a2d;
    --card-bg: rgba(20, 35, 55, 0.9);
    --border-color-light: rgba(60, 80, 100, 0.4);
    --border-color-dark: rgba(40, 60, 80, 0.6);
    --text-color-primary: #e0e6f0;
    --text-color-secondary: #a0b0c0;
    --text-color-light: #708090;
    --accent-color-1: #00c4cc;
    --accent-color-2: #009999;
    --shadow-light: rgba(0, 0, 0, 0.4);
    --shadow-medium: rgba(0, 0, 0, 0.6);
    --hover-effect-light: rgba(0, 196, 204, 0.1);
}

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

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-color-primary);
    min-height: 100vh;
    overflow-x: hidden;
    perspective: 1000px;
    line-height: 1.6;
    scroll-behavior: smooth;
}

.player {
    max-width: 480px;
    margin: 0 auto;
    padding: 16px;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

input[type="range"] {
    width: 100%;
}

.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    background-color: var(--primary-bg);
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: transparent;
    background-image: none;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50% 50%;
    z-index: 1;
}

.quantum-waves,
.binary-rain,
.tesseract,
.wireframe-sphere {
    display: none;
}

.container {
    max-width: 960px;
    margin: 3rem auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.profile-card,
.skills-section,
.contact-section {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 3rem;
    width: 100%;
    box-shadow: 0 10px 30px var(--shadow-light);
    border: 1px solid var(--border-color-dark);
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 3rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-card:hover,
.skills-section:hover,
.contact-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color-1), transparent);
    animation: scanline 6s linear infinite;
    filter: drop-shadow(0 0 5px var(--accent-color-1));
    opacity: 0.6;
}

@keyframes scanline {
    0% {
        top: 0;
        opacity: 0;
    }
    
    5% {
        opacity: 0.6;
    }
    
    95% {
        opacity: 0.6;
    }
    
    100% {
        top: 100%;
        opacity: 0;
    }
}

.profile-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--hover-effect-light) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
    filter: blur(50px);
    opacity: 0.5;
}

.profile-img-container {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 0 0 5px var(--card-bg), 0 0 0 7px var(--accent-color-1);
    transition: all 0.3s ease;
    filter: drop-shadow(0 0 15px rgba(0, 196, 204, 0.6));
}

.kimak {
    font-size: 3.2rem;
    color: #fff;
}

.kimbek {
    font-size: 1.15rem;
    font-family: monospace;
    color: var(--accent-color-1);
    text-shadow: 0 0 15px rgba(0, 196, 204, 0.6)
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    
    100% {
        transform: rotate(360deg);
    }
}

.rotate {
    animation: spin 15s linear infinite;
    /* 15s per putaran */
    border-radius: 50%;
    will-change: transform;
    /* optimasi performa */
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(0%) brightness(1);
    transition: filter 0.3s ease;
}

.profile-img-container:hover {
    box-shadow: 0 0 0 5px var(--card-bg), 0 0 0 7px var(--accent-color-2);
    filter: drop-shadow(0 0 20px rgba(0, 196, 204, 0.8));
}

.name {
    font-family: 'Poppins', sans-serif;
    font-size: 3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--accent-color-1);
    text-shadow: 0 0 15px rgba(0, 196, 204, 0.6);
}

.name::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 120px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-color-2), transparent);
    transition: transform 0.4s ease;
    filter: drop-shadow(0 0 5px var(--accent-color-2));
}

.name:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-color-light);
    margin-bottom: 2rem;
    font-weight: 400;
}

.bio {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    color: var(--text-color-secondary);
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.bio strong {
    color: var(--accent-color-1);
    font-weight: 600;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    z-index: 999;
    /* Ditambahkan/Diperbaiki */
    position: relative;
    /* Ditambahkan/Diperbaiki */
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--border-color-dark);
    color: var(--text-color-primary);
    font-size: 1.3rem;
    transition: all 0.3s ease;
    box-shadow: 0 0 0 1px var(--border-color-light), inset 0 0 5px rgba(255, 255, 255, 0.05);
    pointer-events: auto;
    /* Ditambahkan/Diperbaiki */
}

.social-link:hover {
    background: var(--accent-color-1);
    color: #ffffff;
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 0 15px var(--accent-color-1);
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2rem;
    margin-bottom: 2.5rem;
    color: var(--accent-color-1);
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    position: relative;
    display: inline-block;
    text-shadow: 0 0 15px rgba(0, 196, 204, 0.6);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--accent-color-1);
    border-radius: 2px;
    filter: drop-shadow(0 0 5px var(--accent-color-1));
}

.skills-section {
    padding: 3rem;
    margin-top: 3rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 1.5rem;
    justify-content: center;
    max-width: 750px;
    margin: 0 auto;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 0.8rem;
    background: var(--border-color-dark);
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.skill-item i {
    font-size: 2.5rem;
    margin-bottom: 0.28rem;
    color: var(--text-color-primary);
    transition: color 0.3s ease, transform 0.3s ease;
}

.skill-item span {
    font-size: 0.9rem;
    color: var(--text-color-secondary);
    font-weight: 500;
}

.skill-item:hover {
    background: var(--accent-color-1);
    box-shadow: 0 8px 20px rgba(0, 196, 204, 0.4);
    transform: translateY(-5px);
    border-color: var(--accent-color-1);
}

.skill-item:hover i {
    color: #ffffff;
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px #ffffff);
}

.skill-item:hover span {
    color: #ffffff;
}

.skill-item[data-skill="HTML"] i {
    color: #e34f26;
}

.skill-item[data-skill="CSS"] i {
    color: #2965f1;
}

.skill-item[data-skill="JavaScript"] i {
    color: #f7df1e;
}

.skill-item[data-skill="Node.js"] i {
    color: #339933;
}

.skill-item[data-skill="Windows"] i {
    color: #00BCF2;
}

.skill-item[data-skill="MongoDB"] i {
    color: #47a248;
}

.skill-item[data-skill="Linux"] i {
    color: #fff;
}

.skill-item[data-skill="Git"] i {
    color: #f1502f;
}

.contact-section {
    padding: 3rem;
    margin-top: 3rem;
    margin-bottom: 5rem;
}

.contact-intro {
    font-size: 1.05rem;
    color: var(--text-color-secondary);
    margin-bottom: 2rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    background: var(--accent-color-1);
    color: #ffffff;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.15rem;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 196, 204, 0.4);
    margin-bottom: 1.5rem;
}

.cta-button i {
    margin-right: 0.8rem;
    font-size: 1.25em;
}

.cta-button:hover {
    background: var(--accent-color-2);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 196, 204, 0.6);
}

#volume {
    -webkit-appearance: none;
    /* Hilangkan style bawaan */
    width: 100%;
    height: 6px;
    background: transparent;
}

#volume::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--accent-color-1) var(--val), #ccc var(--val));
}

#volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 16px;
    width: 16px;
    background: var(--accent-color-1);
    border-radius: 50%;
    cursor: pointer;
    margin-top: -5px;
}

#progress {
    -webkit-appearance: none;
    background: transparent;
}

#progress::-webkit-slider-thumb {
    -webkit-appearance: none;
    border-radius: 50%;
    height: 16px;
    width: 16px;
    cursor: pointer;
    margin-top: -5px;
    background: var(--accent-color-1);
    
}

#progress::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--accent-color-1) var(--val), #ccc var(--val));
}

.contact-info {
    font-size: 0.95rem;
    color: var(--text-color-light);
    margin-bottom: 1rem;
}

.contact-social-links {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
}

.contact-social-links a {
    color: var(--accent-color-1);
    font-size: 1.8rem;
    transition: color 0.3s ease, transform 0.3s ease;
}

.contact-social-links a:hover {
    color: var(--accent-color-2);
    transform: translateY(-3px) scale(1.1);
}

.footer {
    text-align: center;
    padding: 2rem 1rem;
    border-top: 1px solid var(--border-color-dark);
    color: var(--text-color-light);
    font-size: 0.85rem;
    background-color: var(--card-bg);
    box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.3);
}

.footer p {
    margin-bottom: 0.5rem;
}

.footer i {
    color: #ff6b6b;
    margin: 0 0.3rem;
}

@media (max-width: 768px) {
    .container {
        padding: 2rem 1rem;
        margin: 2rem auto;
    }
    
    .profile-card,
    .skills-section,
    .contact-section {
        padding: 2rem 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .bio {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        margin-top: -1rem;
    }
    
    .profile-img-container {
        width: 150px;
        height: 150px;
        margin-bottom: 1rem;
    }
    
    .social-link {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 1.8rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 1rem;
    }
    
    .skill-item {
        height: 85px;
        padding: 1rem 0.5rem;
    }
    
    .skill-item i {
        font-size: 2.2rem;
    }
    
    .skill-item span {
        font-size: 0.8rem;
    }
    
    .quantum-waves,
    .binary-rain,
    .tesseract,
    .wireframe-sphere {
        display: none;
    }
    
    .profile-card:hover {
        transform: none;
        box-shadow: 0 10px 30px var(--shadow-medium);
    }
}

@media (max-width: 480px) {
    .profile-card {
        padding: 1.5rem;
    }
    
    .name {
        font-size: 2rem;
        letter-spacing: 0;
    }
    
    .tagline {
        font-size: 0.9rem;
    }
    
    .profile-img-container {
        width: 120px;
        height: 120px;
    }
    
    .social-links {
        gap: 0.8rem;
    }
    
    .social-link {
        width: 38px;
        height: 38px;
        font-size: 1.1rem;
    }
    
    .skills-grid {
        gap: 0.8rem;
        grid-template-columns: repeat(3, 1fr);
    }
    
    .skill-item {
        height: 75px;
        padding: 0.8rem 0.3rem;
    }
    
    .skill-item i {
        font-size: 2rem;
    }
    
    .skill-item span {
        font-size: 0.75rem;
    }
}