/* --- CSS VARIABLES & RESET --- */
:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-color: #58a6ff; /* Biru GitHub */
    --accent-glow: rgba(88, 166, 255, 0.4);
    --code-green: #2ea043;
    --code-keyword: #ff7b72;
    --font-main: 'JetBrains Mono', monospace;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* --- UTILITIES --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: ' /> ';
    color: var(--code-green);
}

.section-title::before {
    content: ' < ';
    color: var(--code-green);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 4px;
    font-weight: bold;
    transition: var(--transition);
    cursor: pointer;
}

.btn:hover {
    background: var(--accent-glow);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

/* --- CANVAS BACKGROUND --- */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
}

/* --- HEADER / NAVBAR --- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid #30363d;
    padding: 15px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.logo span {
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-color);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- HERO SECTION --- */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px;
}

.hero-content h2 {
    font-size: 1.2rem;
    color: var(--code-green);
    margin-bottom: 10px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--accent-color);
}

.typewriter {
    font-size: 1.5rem;
    color: var(--text-secondary);
    min-height: 1.6em;
    margin-bottom: 30px;
}

.cursor {
    display: inline-block;
    width: 10px;
    background-color: var(--accent-color);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* --- ABOUT SECTION --- */
.about {
    padding: 100px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.code-window {
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid #30363d;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.window-header {
    background: #21262d;
    padding: 10px 15px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid #30363d;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.red { background: #ff5f56; }
.yellow { background: #ffbd2e; }
.green { background: #27c93f; }

.window-body {
    padding: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    overflow-x: auto;
}

.line-num {
    color: #484f58;
    margin-right: 15px;
    user-select: none;
}
.kwd { color: var(--code-keyword); }
.str { color: #a5d6ff; }
.func { color: #d2a8ff; }

.about-text p {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

/* --- SKILLS SECTION --- */
.skills {
    padding: 100px 0;
    background: #10141a;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
}

.skill-card {
    background: var(--card-bg);
    padding: 20px;
    border: 1px solid #30363d;
    border-radius: 6px;
    text-align: center;
    transition: var(--transition);
}

.skill-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-5px);
}

.skill-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

/* --- PROJECTS SECTION --- */
.projects {
    padding: 100px 0;
}

.project-grid {
    display: grid;
    
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
    gap: 30px;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid #30363d;
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--code-green);
}

.project-content {
    padding: 25px;
    flex-grow: 1;
}

.folder-icon {
    color: var(--accent-color);
    font-size: 2rem;
    margin-bottom: 20px;
}

.project-card h3 {
    margin-bottom: 10px;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.8rem;
    color: var(--code-keyword);
}

.project-links {
    display: flex;
    gap: 15px;
}

.project-links a {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.project-links a:hover {
    color: var(--accent-color);
}

/* --- CONTACT SECTION --- */
.contact {
    padding: 100px 0;
    text-align: center;
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact p {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-control {
    width: 100%;
    padding: 15px;
    background: var(--card-bg);
    border: 1px solid #30363d;
    color: var(--text-primary);
    font-family: var(--font-main);
    border-radius: 4px;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* --- FOOTER --- */
footer {
    padding: 30px 0;
    text-align: center;
    background: #090c10;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.social-icons {
    margin-bottom: 15px;
}

.social-icons a {
    margin: 0 10px;
    font-size: 1.2rem;
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: 0;
        height: calc(100vh - 70px);
        width: 100%;
        background: #161b22;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 20px 0;
        
        clip-path: circle(0px at 100% 0%);
        -webkit-clip-path: circle(0px at 100% 0%);
        transition: all 0.5s ease-in-out;
        pointer-events: none;
    }

    .nav-links.active {
        clip-path: circle(1200px at 100% 0%);
        -webkit-clip-path: circle(1200px at 100% 0%);
        pointer-events: all;
    }

    .nav-links li {
        margin: 20px 0;
    }

    .nav-links a {
        font-size: 1.5rem;
    }

    .menu-toggle {
        display: block;
        z-index: 1001;
    }
    
    .window-body {
        font-size: 0.8rem;
    }
}