/* --- UTILITY & SETUP --- */
.container { max-width: 1200px; margin: 0 auto; padding: 60px 20px; }
.bg-light { background-color: #f8fafc; }
.text-center { text-align: center; }
.divider { height: 4px; width: 60px; background-color: #2B5490; margin: 15px 0 25px 0; }

/* --- 1. HERO SECTION --- */
.detail-hero {
    height: 55vh; display: flex; align-items: center; justify-content: center;
    color: white; text-align: center;
}
.top-badge { background: #11CAA0; padding: 5px 15px; border-radius: 4px; font-size: 12px; font-weight: 700; margin-bottom: 15px; display: inline-block; }
.hero-text h1 { font-size: 48px; margin-bottom: 10px; }
.hero-text p { font-size: 18px; opacity: 0.9; }

/* --- 2. OVERVIEW --- */
.overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.badge-subtitle { color: #2B5490; font-weight: 800; font-size: 14px; letter-spacing: 1px; display: block; margin-bottom: 10px; }
.overview-text h2 { font-size: 36px; color: #1e293b; }
.overview-text p { color: #64748b; line-height: 1.8; font-size: 16px; }

.feature-boxes { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-top: 25px; }
.feature-box { display: flex; align-items: center; gap: 12px; background: white; padding: 15px; border-radius: 8px; border: 1px solid #e2e8f0; }
.feature-box i { color: #2B5490; font-size: 18px; }
.feature-box span { font-weight: 600; font-size: 14px; color: #334155; }

.overview-image-wrapper { position: relative; }
.main-img { width: 100%; border-radius: 15px; box-shadow: 0 15px 35px rgba(0,0,0,0.1); }
.floating-experience {
    position: absolute; bottom: -20px; right: -20px; background: #2B5490; color: white;
    padding: 20px; border-radius: 12px; display: flex; align-items: center; gap: 12px;
}
.exp-number { font-size: 35px; font-weight: 800; }
.exp-text { font-size: 12px; line-height: 1.2; text-transform: uppercase; }

/* --- 3. BLUEPRINT --- */
.sketch-grid { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 40px; 
    margin-top: 40px; 
}
.sketch-item { 
    text-align: center; 
}
.sketch-img-wrapper {
    background: white;
    padding: 15px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}
.sketch-item:hover .sketch-img-wrapper {
    transform: translateY(-8px);
    border-color: #2B5490;
}
.sketch-img { 
    width: 100%; 
    border-radius: 6px; 
    display: block;
}
.sketch-title { 
    color: #1e293b; 
    font-size: 18px; 
    font-weight: 700; 
    margin: 0;
    letter-spacing: 0.5px;
}

/* --- 4. GALLERY CARDS WITH DESCRIPTION --- */
.popup-gallery-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.project-card { background: white; border-radius: 12px; overflow: hidden; box-shadow: 0 5px 15px rgba(0,0,0,0.05); transition: 0.3s; }
.project-card:hover { transform: translateY(-10px); box-shadow: 0 12px 30px rgba(43,84,144,0.15); }

.gallery-card-top { position: relative; height: 230px; overflow: hidden; cursor: pointer; }
.gallery-card-top img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.card-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(43, 84, 144, 0.8); display: flex; flex-direction: column;
    align-items: center; justify-content: center; color: white; opacity: 0; transition: 0.3s;
}
.project-card:hover .gallery-card-top img { transform: scale(1.1); }
.project-card:hover .card-overlay { opacity: 1; }
.card-overlay i { font-size: 30px; margin-bottom: 10px; }

.card-body { padding: 20px; }
.card-body h3 { font-size: 18px; color: #2B5490; margin-bottom: 10px; }
.card-body p { font-size: 14px; color: #64748b; line-height: 1.6; margin-bottom: 15px; }
.project-tag { font-size: 12px; font-weight: 700; color: #11CAA0; background: #e8fbf7; padding: 4px 10px; border-radius: 4px; }

/* --- 5. LIGHTBOX MODAL --- */
.modal { display: none; position: fixed; z-index: 9999; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.95); align-items: center; justify-content: center; }
.modal-content { position: relative; width: 90%; max-width: 1000px; text-align: center; }
.modal-content img { max-height: 80vh; max-width: 100%; border-radius: 8px; animation: zoomIn 0.3s ease; }
.close-modal { position: absolute; top: 20px; right: 40px; color: white; font-size: 50px; cursor: pointer; }
.modal-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,0.1); border: none; color: white; width: 50px; height: 50px; border-radius: 50%; cursor: pointer; font-size: 20px; }
.modal-btn:hover { background: #2B5490; }
.prev-modal { left: -60px; }
.next-modal { right: -60px; }
.modal-counter { color: white; margin-top: 15px; font-size: 16px; letter-spacing: 2px; }

@keyframes zoomIn { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* --- PERBAIKAN JARAK HEADER --- */
.section-header {
    margin-bottom: 50px; /* Ngasih jarak yang lega antara teks dan foto */
}

.section-header p {
    margin-top: 10px;
    color: #64748b;
}

/* Biar card overlay nggak bocor dari kotaknya */
.gallery-card-top {
    position: relative;
    height: 230px;
    overflow: hidden; 
    cursor: pointer;
    border-bottom: 1px solid #e2e8f0;
}

@media (max-width: 768px) {
    .overview-grid, .sketch-grid { grid-template-columns: 1fr; }
    .prev-modal { left: 10px; } .next-modal { right: 10px; }
}

/* --- 6. GALLERY FILTER BUTTONS --- */
.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background-color: transparent;
    border: 2px solid #2B5490;
    color: #2B5490;
    border-radius: 30px; /* Bikin bentuknya lonjong (pill) */
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 15px;
}

.filter-btn:hover, .filter-btn.active {
    background-color: #2B5490;
    color: white;
    box-shadow: 0 5px 15px rgba(43, 84, 144, 0.2);
}

/* Animasi pas kartu muncul setelah difilter */
.project-card {
    animation: zoomIn 0.4s ease;
}


/*=========================
    Tank & Vessel
==========================*/

/* --- 7. TANK SLIDER --- */
.tank-slider-section { margin-top: 20px; margin-bottom: 60px; }

.slider-wrapper {
    position: relative;
    max-width: 850px; /* Lebar kotaknya dibatesin biar rapi di tengah */
    margin: 0 auto;
    overflow: hidden;
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.08);
    border: 1px solid #e2e8f0;
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.slide-item {
    min-width: 100%; /* Biar tiap slide penuh seukuran kotak */
    box-sizing: border-box;
}

.slide-item img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    display: block;
}

.slide-content {
    padding: 35px 40px;
    text-align: center;
}

.slide-content h3 {
    color: #2B5490;
    font-size: 26px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.slide-content h3 i { color: #11CAA0; }

.slide-content p {
    color: #64748b;
    line-height: 1.8;
    font-size: 16px;
    margin: 0;
}

/* Tombol Panah Kiri Kanan */
.slide-btn {
    position: absolute;
    top: 225px; /* Posisinya pas di tengah gambar */
    transform: translateY(-50%);
    background: rgba(43, 84, 144, 0.9);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.3s ease;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}
.slide-btn:hover { background: #11CAA0; transform: translateY(-50%) scale(1.1); }
.prev-slide { left: 20px; }
.next-slide { right: 20px; }

/* Titik-titik Navigasi (Dots) */
.slider-dots {
    text-align: center;
    margin-top: 25px;
}
.dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    background: #cbd5e1;
    border-radius: 50%;
    margin: 0 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.dot.active {
    background: #2B5490;
    width: 30px; /* Dot yang aktif jadi lebih panjang/oval */
    border-radius: 10px;
}

@media (max-width: 768px) {
    .slide-item img { height: 300px; }
    .slide-content { padding: 20px; }
    .slide-btn { width: 40px; height: 40px; top: 150px; }
}

/* ==========================================
   MODAL GALLERY (PENGATURAN FOTO & VIDEO)
   ========================================== */
.modal-content {
    text-align: center;
}

#modalImage, #modalVideo {
    margin: 0 auto;
    display: block;
    max-height: 80vh;
    max-width: 100%;
    border-radius: 8px;
}