/* ==========================================================================
   PENGATURAN GLOBAL, FONT, DAN TEMA WARNA (EMAS & HITAM)
   ========================================================================== */
:root {
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --gold: #FFD700;
    --dark-gold: #c7a900;
    --dark-bg-main: #0A0A0A;
    --dark-bg-card: #141414;
    --white: #FFFFFF;
    
    /* REVISI 2: Variabel Tema didefinisikan di sini */
    /* Default adalah Mode Gelap */
    --bg-color: var(--dark-bg-main);
    --text-color: var(--white);
    --card-bg: var(--dark-bg-card);
    --header-bg: rgba(10, 10, 10, 0.85);
    --border-color: rgba(255, 255, 255, 0.1);
    --light-gray-text: #a0a0a0;
    --accent-color: var(--gold);
    --btn-text-color: var(--dark-bg-main);
    --shadow-color: #222;
    --light-effect-color: rgba(255, 215, 0, 0.05);
}

/* REVISI 2: Variabel untuk Mode Terang */
body.light-mode {
    --bg-color: #F5F5F7;
    --text-color: #1d1d1f;
    --card-bg: #FFFFFF;
    --header-bg: rgba(245, 245, 247, 0.85);
    --border-color: rgba(0, 0, 0, 0.1);
    --light-gray-text: #555555;
    --btn-text-color: #0A0A0A;
    --shadow-color: #ddd;
    --light-effect-color: rgba(0, 0, 0, 0.03);
}

/* ==========================================================================
   RESET CSS DAN PENGATURAN DASAR
   ========================================================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    /* REVISI 2: Transisi untuk pergantian mode yang mulus */
    transition: background-color 0.4s ease, color 0.4s ease;
}
.container { max-width: 1440px; margin: 0 auto; padding: 0 40px; }
h1, h2, h3 { font-family: var(--font-heading); margin-bottom: 20px; color: var(--text-color); transition: color 0.4s ease; }
h1 { font-size: 4rem; line-height: 1.1; text-transform: uppercase; }
h2 { font-size: 2.8rem; line-height: 1.2; }
h3 { font-size: 1.8rem; line-height: 1.3; }
p { margin-bottom: 1em; color: var(--light-gray-text); transition: color 0.4s ease; }
a { color: var(--text-color); text-decoration: none; }

.section-tag {
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-color);
    margin-bottom: 10px;
    letter-spacing: 1.5px;
}
.accent-color { color: var(--accent-color); }

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: var(--btn-text-color); /* REVISI 2: Menggunakan variabel */
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    transition: background-color 0.3s ease, color 0.3s ease;
    border: none;
}
.btn:hover { background-color: var(--dark-gold); color: #000; }

/* ==========================================================================
   PRE-LOADER
   ========================================================================== */
.preloader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--dark-bg-main); z-index: 9999; display: flex;
    justify-content: center; align-items: center;
}
.preloader-logo img { width: 100px; }

/* ==========================================================================
   HEADER DAN NAVIGASI
   ========================================================================== */
#main-header {
    position: fixed; width: 100%; z-index: 1000;
    background-color: transparent;
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
}
#main-header.scrolled {
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}
#main-header .container {
    display: flex; justify-content: space-between; align-items: center;
    height: 100px; transition: height 0.4s ease;
}
#main-header.scrolled .container { height: 70px; }
.logo { height: 35px; }
.logo img { height: 100%; }

nav { display: flex; align-items: center; gap: 30px; }
nav a {
    font-weight: 700;
    transition: color 0.3s ease;
}
nav a:hover { color: var(--accent-color); }
nav a span { display: inline-block; }

/* REVISI 2: Style untuk tombol mode gelap/terang */
#theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    width: 24px;
    height: 24px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
#theme-toggle svg {
    width: 100%;
    height: 100%;
    transition: transform 0.3s ease;
}
#theme-toggle:hover svg {
    color: var(--accent-color);
    transform: scale(1.1);
}
#theme-toggle .sun { display: none; }
#theme-toggle .moon { display: block; }
body.light-mode #theme-toggle .sun { display: block; }
body.light-mode #theme-toggle .moon { display: none; }


/* ==========================================================================
   HERO SLIDER
   ========================================================================== */
.hero-slider { height: 100vh; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.slides-container { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.slide {
    position: absolute; width: 100%; height: 100%;
    background-size: cover; background-position: center;
    opacity: 0; transform: scale(1.05);
    transition: opacity 1.5s ease, transform 6s ease-out;
    filter: brightness(0.6);
    display: flex; align-items: center; justify-content: center;
    text-align: center;
}
body.light-mode .slide { filter: brightness(0.8); } /* REVISI 2: Filter slide di mode terang */
.slide.active { opacity: 1; transform: scale(1); }
.slide-content { color: var(--white); }
.slide-content h1 { font-size: 5vw; margin-bottom: 20px; }
.hashtags span {
    display: inline-block;
    border: 1px solid var(--accent-color);
    padding: 5px 15px;
    margin: 0 10px;
    border-radius: 20px;
    font-family: var(--font-body);
    font-weight: 500;
    text-transform: none;
    color: var(--accent-color);
    background-color: rgba(0,0,0,0.3); /* REVISI 2: Background agar lebih terbaca */
}

.slider-controls {
    position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
    z-index: 10; display: flex; align-items: center; gap: 15px;
}
.slider-controls button {
    background: rgba(0,0,0,0.3); border: 1px solid var(--white);
    color: var(--white); width: 45px; height: 45px;
    border-radius: 50%; font-size: 20px;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}
.slider-controls button:hover { background-color: var(--accent-color); border-color: var(--accent-color); color: var(--dark-bg-main); }
.slider-dots { display: flex; gap: 12px; }
.dot {
    width: 12px; height: 12px; border-radius: 50%;
    background: rgba(255,255,255,0.5); transition: background 0.3s;
}
.dot.active { background: var(--white); }

/* ==========================================================================
   KONTEN UTAMA & EFEK CAHAYA INTERAKTIF
   ========================================================================== */
.content-section { 
    padding: 120px 0; 
    border-bottom: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: border-color 0.4s ease; /* REVISI 2 */
}
.content-section::before {
    content: '';
    position: absolute;
    left: var(--mouse-x, 50%);
    top: var(--mouse-y, 50%);
    width: 800px;
    height: 800px;
    background-image: radial-gradient(circle, var(--light-effect-color) 0%, transparent 70%); /* REVISI 2 */
    transform: translate(-50%, -50%);
    transition: left 0.6s ease-out, top 0.6s ease-out;
}
.hero-slider::before { display: none; } /* Nonaktifkan di hero */


.content-section:last-of-type { border-bottom: none; }
[data-animation="fade-up"] { opacity: 0; transform: translateY(50px); }
[data-animation="text-reveal"] { opacity: 0; }

/* ==========================================================================
   BAGIAN KONTEN SPESIFIK
   ========================================================================== */
.about-section { text-align: center; }
.section-title-3d {
    font-size: 1.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-color);
    letter-spacing: 2px;
    margin-bottom: 40px;
    text-shadow: 1px 1px 0px var(--dark-gold), 
                 2px 2px 0px var(--shadow-color), /* REVISI 2 */
                 3px 3px 8px rgba(0,0,0,0.5);
    transition: text-shadow 0.4s ease;
}
.about-section .description-text { 
    font-size: 1.2rem; 
    max-width: 800px; 
    line-height: 1.8; 
    color: var(--text-color);
    margin: 0 auto;
    text-align: justify;
}

.cta-section {
    background-color: #000;
    text-align: center;
    padding: 100px 0;
    transition: background-color 0.4s ease; /* REVISI 2 */
}
/* REVISI 2 */
body.light-mode .cta-section {
    background-color: #e9e9eb;
}
.cta-section::before {
     background-image: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
}
body.light-mode .cta-section::before {
    background-image: radial-gradient(circle, rgba(0, 0, 0, 0.04) 0%, transparent 70%);
}
.cta-section h2 { font-size: 3rem; margin-bottom: 15px; }
.cta-section p { font-size: 1.2rem; max-width: 600px; margin: 0 auto 30px auto; color: var(--light-gray-text); }

.visi-misi-section { padding-top: 100px; }
.visi-misi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.visi-misi-card {
    background-color: var(--card-bg);
    padding: 40px; border-radius: 10px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: background-color 0.4s ease, border-color 0.4s ease; /* REVISI 2 */
}
.card-bg-text {
    position: absolute;
    top: -20px; right: 20px;
    font-size: 8rem;
    font-weight: 700;
    color: rgba(255,255,255,0.03);
    user-select: none;
    transition: color 0.4s ease; /* REVISI 2 */
}
/* REVISI 2 */
body.light-mode .card-bg-text {
    color: rgba(0,0,0,0.03);
}
.card-icon { width: 50px; height: 50px; margin-bottom: 20px; }
.visi-misi-card h3 { color: var(--accent-color); }
.visi-misi-card ul { list-style: none; padding-left: 0; }
.visi-misi-card li { margin-bottom: 10px; padding-left: 20px; position: relative; }
.visi-misi-card li::before { content: '✓'; color: var(--accent-color); position: absolute; left: 0; }

.services-section { background-color: var(--dark-bg-main); transition: background-color 0.4s ease; } /* REVISI 2 */
body.light-mode .services-section { background-color: var(--bg-color); } /* REVISI 2 */
.section-header-center { text-align: center; margin-bottom: 50px; }
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    justify-content: center;
}
.service-card {
    background-color: var(--card-bg);
    padding: 40px; border-radius: 10px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.4s ease, border-color 0.4s ease; /* REVISI 2 */
}
.service-card:hover { transform: translateY(-10px); box-shadow: 0 15px 30px rgba(255, 215, 0, 0.1); }
body.light-mode .service-card:hover { box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08); } /* REVISI 2 */
.service-card .service-icon { width: 60px; height: 60px; margin-bottom: 20px; }
.service-card h3 { color: var(--accent-color); }
.service-card p { margin-bottom: 30px; }

.service-modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.8); z-index: 10000;
    display: none; align-items: center; justify-content: center; padding: 20px;
    opacity: 0; transition: opacity 0.4s ease;
}
.service-modal.active { display: flex; opacity: 1; }
.modal-content {
    background-color: var(--card-bg); border-radius: 10px; padding: 40px;
    max-width: 800px; width: 100%; position: relative; text-align: center;
    transform: scale(0.9); transition: transform 0.4s ease, background-color 0.4s ease; /* REVISI 2 */
}
.service-modal.active .modal-content { transform: scale(1); }
.close-modal {
    position: absolute; top: 15px; right: 20px;
    background: none; border: none; font-size: 30px; color: var(--text-color);
    transition: color 0.4s ease; /* REVISI 2 */
}
.modal-image { width: 100%; height: 300px; object-fit: cover; border-radius: 5px; margin-bottom: 20px; }
.modal-title { color: var(--accent-color); font-size: 2.5rem; }
.modal-description { color: var(--light-gray-text); margin-bottom: 30px; }
.modal-button { margin-top: 20px; }

.portfolio-section { padding-bottom: 0; border-bottom: none; }
.portfolio-section .container { text-align: center; margin-bottom: 50px; }
.portfolio-marquee {
    overflow: hidden; padding: 40px 0;
    border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
    display: flex; flex-direction: column; gap: 20px;
    transition: border-color 0.4s ease; /* REVISI 2 */
}
.marquee-row { display: flex; animation: marquee-scroll 60s linear infinite; }
.marquee-row.reverse { animation-direction: reverse; }
.portfolio-marquee:hover .marquee-row { animation-play-state: paused; }
@keyframes marquee-scroll { 0% { transform: translateX(0%); } 100% { transform: translateX(-100%); } }
.portfolio-item {
    flex-shrink: 0; width: 400px; height: 300px; margin: 0 10px;
    position: relative; overflow: hidden; border-radius: 10px; transition: filter 0.3s ease;
}
.portfolio-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.portfolio-item-overlay {
    position: absolute; bottom: 0; left: 0; width: 100%; padding: 20px;
    background: linear-gradient(0deg, rgba(10, 10, 10, 0.9) 0%, rgba(10, 10, 10, 0) 100%);
    color: var(--white); transform: translateY(100%); transition: transform 0.4s ease;
}
body.light-mode .portfolio-item-overlay { background: linear-gradient(0deg, rgba(20, 20, 20, 0.9) 0%, rgba(20, 20, 20, 0) 100%); } /* REVISI 2 */
.portfolio-item:hover .portfolio-item-overlay { transform: translateY(0); }
.portfolio-item:hover img { transform: scale(1.1); }
.portfolio-marquee:hover .portfolio-item { filter: grayscale(80%) brightness(0.7); }
.portfolio-marquee .portfolio-item:hover { filter: grayscale(0) brightness(1); }

.collaboration-section { background-color: var(--dark-bg-main); transition: background-color 0.4s ease; } /* REVISI 2 */
body.light-mode .collaboration-section { background-color: var(--bg-color); } /* REVISI 2 */
.collaboration-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; margin-top: 50px; }
.collaboration-card { background-color: var(--card-bg); padding: 40px; border-radius: 10px; border: 1px solid var(--border-color); transition: background-color 0.4s ease, border-color 0.4s ease; } /* REVISI 2 */
.collaboration-card h3 { font-size: 2rem; }
.social-icons { display: flex; gap: 25px; margin-top: 30px; }
.social-icons a img {
    width: 50px; height: 50px; filter: grayscale(1) opacity(0.7);
    transition: filter 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}
.social-icons a:hover img { filter: grayscale(0) opacity(1); transform: scale(1.1); }
/* REVISI 2 */
body.light-mode .social-icons a img { filter: grayscale(1) opacity(0.6); }
body.light-mode .social-icons a:hover img { filter: grayscale(0) opacity(1); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
    background-color: var(--dark-bg-main); color: var(--light-gray-text);
    padding: 80px 0 40px; position: relative;
    transition: background-color 0.4s ease; /* REVISI 2 */
}
/* REVISI 2 */
body.light-mode footer { background-color: #000; }

.footer-gradient-bar {
    position: absolute; top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--dark-gold), var(--gold), var(--dark-gold));
    background-size: 200% 100%; animation: gradient-flow 5s linear infinite;
}
@keyframes gradient-flow { 0% { background-position: 200% 0; } 100% { background-position: 0% 0; } }

.footer-grid {
    display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px; margin-bottom: 40px; padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
    transition: border-color 0.4s ease; /* REVISI 2 */
}
.footer-logo { width: 120px; margin-bottom: 15px; }
.footer-col h3 { color: var(--white); font-size: 1.5rem; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a, .footer-col > p a { color: var(--light-gray-text); transition: color 0.3s ease; }
.footer-links a:hover, .footer-col > p a:hover { color: var(--accent-color); }
.footer-social-icons { display: flex; gap: 20px; margin-top: 20px; }
.footer-social-icons img { width: 24px; }

.copyright { position: relative; padding: 20px 0 0 0; text-align: center; }
.back-to-top {
    position: absolute; right: 0; top: 20px;
    font-size: 20px; border: 1px solid var(--border-color);
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center; border-radius: 50%;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.4s ease; /* REVISI 2 */
}
.back-to-top:hover { background-color: var(--accent-color); color: var(--dark-bg-main); }

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
    .visi-misi-grid, .collaboration-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
    .portfolio-item { width: 350px; height: 260px; }
}
@media (max-width: 768px) {
    h1 { font-size: 10vw; }
    .slide-content h1 { font-size: 8vw; }
    .cta-section h2 { font-size: 2.5rem; }
    .visi-misi-grid, .collaboration-grid, .footer-grid { grid-template-columns: 1fr; }
    nav { display: none; } /* REVISI 2: Navigasi akan disembunyikan di mobile, jadi kita perlu style menu burger nanti jika diperlukan */
    /* REVISI 2: Posisikan theme toggle jika nav hilang */
    #main-header .container { justify-content: space-between; }
    #theme-toggle { order: 3; } /* Pastikan tombol tetap terlihat */
    
    .portfolio-item { width: 300px; height: 225px; }
}
@media (max-width: 480px) {
    .container { padding: 0 20px; }
    .cta-section h2 { font-size: 2rem; }
}