/* ===== style.css ===== */
/* RESET & BASE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px; /* Mencegah konten tertutup navbar saat diklik */
    scrollbar-width: thin; /* Firefox */
    scrollbar-color: #1e4b9c #f0f5ff; /* Firefox */
}

/* Custom Scrollbar (Chrome, Edge, Safari) */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #f0f5ff;
}

::-webkit-scrollbar-thumb {
    background-color: #1e4b9c;
    border-radius: 10px;
    border: 3px solid #f0f5ff;
}

::-webkit-scrollbar-thumb:hover {
    background-color: #0a2b5e;
}

body {
    font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
    background-color: #f0f5ff;  /* Light blue background */
    color: #1e3a6b;
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: -2px auto;
    padding: 10px 80px;
}

/* TYPOGRAPHY */
h1 {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.2;
    color: #0a2647;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0a2647;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0a2647;
    margin-bottom: 12px;
}

h5 {
    font-size: 1rem;
    font-weight: 600;
    color: #2b6c9e;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

p {
    color: #2c3e5c;
    margin-bottom: 20px;
}

/* NAVIGATION */
.main-header {
    position: fixed;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 95%;
    max-width: 1280px;
    border-radius: 10px;
    z-index: 1000;
    transition: all 0.3s ease;
}

.main-header.scrolled {
    background-color: rgba(10, 43, 94, 0.95); /* Warna biru gelap transparan */
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.main-header.scrolled .navbar {
    padding: 10px 0; /* Mengecilkan padding saat scroll */
    border-bottom: none;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    flex-wrap: wrap;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.6rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.logo img {
    height: 35px;
}

/* Animasi Logo saat Scroll */
.main-header.scrolled .logo img {
    transform: scale(0.9); /* Mengecilkan logo sedikit */
    transition: transform 0.3s ease;
}

.nav-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s;
    position: relative;
    line-height: 5px;
}

.nav-links a:hover {
    color: #c0c8cf;
}

.nav-links a.active {
    color: #ffffff;
    font-weight: 700;
}

/* Mobile Socials (Hidden on Desktop) */
.mobile-socials {
    display: none;
}

/* Close Menu Button (Mobile) */
.close-menu-btn {
    display: none;
}

/* HAMBURGER MENU */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    padding: 5px;
}

.menu-toggle .bar {
    width: 28px;
    height: 3px;
    background-color: white;
    border-radius: 3px;
    transition: all 0.4s ease;
}

/* Animasi Hamburger ke X */
.menu-toggle.active .bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
    transform: translateX(10px);
}

.menu-toggle.active .bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #1e4b9c;
    color: white;
    border: 2px solid #1e4b9c;
}

.btn-primary:hover {
    background-color: #0a2b5e;
    border-color: #0a2b5e;
}

.btn-secondary {
    background-color: transparent;
    color: #1e4b9c;
    border: 2px solid #1e4b9c;
}

.btn-secondary:hover {
    background-color: #1e4b9c;
    color: white;
}

/* HERO SECTION */
.hero {
    position: relative;
    padding: 250px 0 200px;
    background-color: #0a2b5e;
    overflow: hidden;
    color: white;
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    animation: heroSlide 15s infinite;
}

.slide:nth-child(1) { animation-delay: 0s; }
.slide:nth-child(2) { animation-delay: 5s; }
.slide:nth-child(3) { animation-delay: 10s; }

@keyframes heroSlide {
    0% { opacity: 0; transform: scale(1.1); }
    4% { opacity: 1; transform: scale(1); }
    33% { opacity: 1; transform: scale(1); }
    37% { opacity: 0; transform: scale(1.1); }
    100% { opacity: 0; transform: scale(1.1); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 38, 71, 0.75);
    z-index: 2;
}

.hero-container {
    position: relative;
    z-index: 3;
    display: block;
}

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

.hero-content h1 {
    color: #ffffff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-content h5 {
    color: #64b5f6;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #e0e0e0;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

/* GALLERY SECTION */
.gallery-section {
    padding: 80px 0;
    background-color: #ffffff; /* White background to stand out */
}

.gallery-header {
    display: grid;
    grid-template-columns: 1fr 1.2fr; /* Kolom kiri lebih kecil */
    align-items: end;
    gap: 50px;
    gap: 30px;
    margin-bottom: 60px;
}

.gallery-section .section-header {
    text-align: left;
    margin-bottom: 0;
}

.gallery-section .section-header h2::after {
    left: 0;
    transform: none;
    width: 70px;
}

.gallery-intro {
    text-align: left;
    margin: 0 0 5px 0; /* Sejajar dengan bagian bawah garis h2 */
    font-size: 1.05rem;
    color: #5a6e8a;
    line-height: 1.7;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 4 Kolom Grid */
    grid-auto-rows: 250px; /* Tinggi dasar setiap baris */
    gap: 15px;
}

.gallery-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 30, 60, 0.1);
    position: relative;
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 30, 60, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1); /* Zoom in effect */
}

/* OVERLAY EFFECT */
.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(10, 43, 94, 0.9), transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 25px;
    transform: translateY(100%);
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    perspective: 800px; /* Membuat ruang 3D untuk animasi anak elemen */
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-text h4 {
    color: white;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 10px;
    /* Kondisi awal untuk animasi 3D flip */
    opacity: 0;
    transform: rotateX(-100deg);
    transform-origin: bottom;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1) 0.2s;
}

.gallery-text h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.8);
    transition: width 0.5s ease 0.5s; /* Delay agar garis muncul setelah teks */
}

.gallery-text p {
    color: #e0e0e0;
    font-size: 0.95rem;
    margin: 0;
    /* Kondisi awal untuk animasi 3D flip */
    opacity: 0;
    transform: rotateX(-100deg);
    transform-origin: bottom;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1) 0.3s; /* Delay berbeda */
}

.gallery-item:hover .gallery-text h4,
.gallery-item:hover .gallery-text p {
    transform: rotateX(0deg);
    opacity: 1;
}

.gallery-item:hover .gallery-text h4::after {
    width: 50px;
}

/* BENTO GRID LAYOUT (Asymmetric) */
/* Item 1: Besar di kiri atas (2x2) */
.gallery-item:nth-child(1) {
    grid-column: span 2;
    grid-row: span 2;
}

/* Item 2: Kecil (1x1) */
.gallery-item:nth-child(2) {
    grid-column: span 1;
    grid-row: span 1;
}

/* Item 3: Tinggi di kanan (1x2) */
.gallery-item:nth-child(3) {
    grid-column: span 1;
    grid-row: span 2;
}

/* Item 4: Kecil (1x1) */
.gallery-item:nth-child(4) {
    grid-column: span 1;
    grid-row: span 1;
}

/* Item 5: Lebar di bawah (2x1) */
.gallery-item:nth-child(5) {
    grid-column: span 2;
    grid-row: span 1;
}

/* Item 6: Lebar di bawah (2x1) */
.gallery-item:nth-child(6) {
    grid-column: span 2;
    grid-row: span 1;
}

/* RESPONSIVE GALLERY */
@media (max-width: 992px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    /* Reset spans for tablet */
    .gallery-item:nth-child(n) {
        grid-column: span 1;
        grid-row: span 1;
    }
    /* Keep first item big */
    .gallery-item:nth-child(1) {
        grid-column: span 2;
        grid-row: span 2;
    }
    .gallery-item:nth-child(5), .gallery-item:nth-child(6) {
        grid-column: span 2;
    }
}

@media (max-width: 576px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 250px;
    }
    .gallery-item:nth-child(n) {
        grid-column: span 1;
        grid-row: span 1;
    }
}

/* CALCULATOR SECTION */
.calculator {
    padding: 80px 0 30px; /* Mengurangi jarak bawah ke section video */
    background-color: #ffffff;
}

.calculator-container {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    align-items: flex-start;
    justify-content: center;
}

.calculator-info {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.calculator-info h3 {
    font-size: 1.8rem;
    color: #1e4b9c;
    margin-bottom: 15px;
}

.nishab-card {
    background: #fff;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-left: 5px solid #ffc107;
    margin-bottom: 20px;
}

.nishab-card h4 {
    color: #d35400;
    margin-bottom: 10px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nishab-card p {
    font-size: 0.95rem;
    color: #555;
    margin-bottom: 0;
    line-height: 1.6;
}

.calculator-card {
    flex: 1;
    min-width: 300px;
    max-width: 450px;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(30, 75, 156, 0.15);
    position: relative;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e5c;
    font-size: 0.9rem;
}

.input-wrapper {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e6ed;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s;
    background-color: #f9fbff;
    font-family: inherit;
}

.form-input:focus {
    border-color: #1e4b9c;
    background-color: white;
    outline: none;
    box-shadow: 0 0 0 4px rgba(30, 75, 156, 0.1);
}

.calc-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn-calc {
    flex-grow: 1;
    padding: 15px;
    background: linear-gradient(135deg, #1e4b9c, #0a2b5e);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 10px 20px rgba(30, 75, 156, 0.2);
}

.btn-calc:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(30, 75, 156, 0.3);
}

.btn-reset {
    flex-shrink: 0;
    padding: 15px 25px;
    background-color: transparent;
    color: #5a6e8a;
    border: 2px solid #dbe4f0;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-reset:hover {
    background-color: #f0f5ff;
    border-color: #b8c5d6;
}

.calc-result {
    margin-top: 30px;
    padding: 25px;
    background: #f0f9ff;
    border-radius: 15px;
    border: 1px dashed #1e4b9c;
    display: none;
    animation: fadeIn 0.5s ease;
}

.calc-result.show {
    display: block;
}

.result-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: #555;
}

.result-total {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px solid #dbe4f0;
    font-weight: 800;
    font-size: 1.2rem;
    color: #1e4b9c;
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* VIDEO PROMO SECTION */
.video-promo {
    padding: 30px 0 80px; /* Mengurangi jarak atas dari section kalkulator */
    background-color: #ffffff;
}

.video-wrapper {
    position: relative;
    padding-top: 28%; /* Aspect Ratio Ultra Wide (Lebih pendek lagi) */
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(30, 75, 156, 0.2);
    text-align: center;
    width: 95%;
    max-width: 1280px;
    margin: 0 auto;
}

.video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    z-index: 1;
    object-fit: cover;
}

.video-wrapper iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 210%; /* Zoom diperbesar agar video tetap full di container yang lebih pendek */
    transform: translate(-50%, -50%); /* Posisi tengah (Center Crop) */
    border: 0;
    z-index: 1;
    pointer-events: none; /* Mencegah interaksi klik yang tidak pas karena crop */
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 38, 71, 0.85); /* Darker blue overlay */
    z-index: 2;
}

.video-promo-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    color: white;
    max-width: 800px;
    width: 100%;
    padding: 20px;
}

.video-promo-content h2 {
    color: white;
    font-size: 1.8rem;
    line-height: 1.3;
    margin-bottom: 15px;
    text-shadow: 0 2px 6px rgba(0,0,0,0.5);
    opacity: 0;
}

.video-promo-content p {
    color: #bcc7cd; /* Warna abu-abu terang agar tidak terlalu mencolok */
    font-size: 1rem;
    margin-bottom: 20px;
    text-shadow: 0 1px 4px rgba(0,0,0,0.5);
    opacity: 0;
}

.video-promo-content .btn {
    font-size: 0.95rem;
    padding: 10px 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    opacity: 0;
}

.video-promo-content .btn::after {
    content: " \2192";
    margin-left: 8px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.video-promo-content .btn:hover::after {
    transform: translateX(5px);
}

@keyframes pulseBtn {
    0% {
        transform: scale(1);
        box-shadow: 0 5px 15px rgba(0,0,0,0.2), 0 0 0 0 rgba(255, 255, 255, 0.5);
    }
    70% {
        transform: scale(1.05);
        box-shadow: 0 5px 15px rgba(0,0,0,0.2), 0 0 0 15px rgba(255, 255, 255, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 5px 15px rgba(0,0,0,0.2), 0 0 0 0 rgba(255, 255, 255, 0);
    }
}

/* Animation Triggers */
.video-promo.visible .video-promo-content h2 {
    animation: slideUpFade 0.8s ease-out 0.2s forwards;
}

.video-promo.visible .video-promo-content p {
    animation: slideUpFade 0.8s ease-out 0.4s forwards;
}

.video-promo.visible .video-promo-content .btn {
    animation: slideUpFade 0.8s ease-out 0.6s forwards, pulseBtn 2s infinite 1.5s;
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ENHANCED ABOUT IMAGES */
.about-img-wrapper {
    position: relative;
    z-index: 1;
    padding-right: 20px; /* Ruang untuk gambar kedua */
    padding-bottom: 20px;
}

.about-img-1 {
    width: 85%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    display: block;
    object-fit: cover;
}

.about-img-2 {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 55%;
    border-radius: 15px;
    border: 8px solid white;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    object-fit: cover;
}

.experience-badge {
    position: absolute;
    top: 40px;
    right: 40px;
    background: linear-gradient(135deg, #1e4b9c, #0a2b5e);
    color: white;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    box-shadow: 0 10px 25px rgba(30, 75, 156, 0.4);
    animation: floatBadge 3s ease-in-out infinite;
    z-index: 2;
    border: 4px solid rgba(255,255,255,0.2);
}

.experience-badge .years {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.2;
    margin-top: 2px;
}

@keyframes floatBadge {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ABOUT SECTION */
.about {
    padding: 80px 0;
    background-color: white;
    position: relative;
    overflow: hidden;
}

/* Cloud Ornaments (Background) */
.about::before {
    content: "";
    position: absolute;
    top: -80px;
    left: -80px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #e3f2fd 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 0;
    opacity: 0.6;
    animation: floatCloud 15s infinite ease-in-out;
}

.about::after {
    content: "";
    position: absolute;
    bottom: -100px;
    right: -50px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #e3f2fd 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 0;
    opacity: 0.6;
    animation: floatCloud 20s infinite ease-in-out reverse;
}

@keyframes floatCloud {
    0% { transform: translate(0, 0); }
    50% { transform: translate(30px, 20px); }
    100% { transform: translate(0, 0); }
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-content p {
    text-align: justify;
}

.about-list {
    list-style: none;
    margin: 25px 0;
    margin-left: -15px; /* Mengimbangi padding pada <li> agar lurus */
}

.about-list li {
    margin-bottom: 10px;
    font-size: 1.1rem;
    color: #1e3a6b;
    position: relative;
    padding: 8px 15px 8px 35px; /* Menambah padding untuk efek background */
    line-height: 1.7;
    border-radius: 8px;
    transition: all 0.25s ease-in-out; /* Transisi untuk animasi halus */
    cursor: pointer; /* Mengubah kursor menjadi tangan saat hover */
}

.about-list li:hover {
    background-color: #f0f5ff; /* Warna background saat hover */
    transform: translateX(15px) scale(1.02); /* Efek geser & sedikit membesar */
    color: #0a2b5e; /* Warna teks menjadi lebih gelap */
}

.about-list li::before {
    content: "✓";
    color: #1e4b9c;
    font-weight: bold;
    position: absolute;
    left: 10px; /* Menyesuaikan posisi ikon di dalam padding baru */
    top: 13px; /* Menyesuaikan posisi vertikal ikon */
    font-size: 1.2rem; /* Membuat ikon sedikit lebih besar */
}

.about-list strong {
    color: #1e4b9c;
    font-weight: 700;
}
/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    .hero-container,
    .about-container {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    h1 {
        font-size: 2.8rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .main-header {
        /* Mengubah ke layout navbar standar di mobile */
        top: 0;
        left: 0;
        width: 100%;
        border-radius: 0;
        transform: none;
        background-color: rgba(10, 43, 94, 0.9); /* Background default di mobile */
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }

    .navbar {
        flex-direction: row;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        /* Tampilan Popup Full Screen */
        display: flex;
        flex-direction: column;
        justify-content: flex-start; /* Posisi vertikal tetap di atas */
        align-items: flex-start;     /* Mengubah posisi horizontal ke kiri */
        padding-top: 150px;          /* Memberi jarak dari atas (agar tidak menabrak tombol close) */
        padding-left: 50px;          /* Memberi jarak dari sisi kiri */
        padding-right: 50px;         /* Memberi jarak dari sisi kanan */
        position: fixed;
        top: 15px;
        left: 15px;
        width: calc(100% - 30px); /* Tidak full lebar agar terlihat background belakang */
        height: calc(100vh - 30px); /* Tidak full tinggi */
        border-radius: 20px;
        background: linear-gradient(160deg, rgba(10, 30, 60, 0.98) 0%, rgba(5, 20, 40, 0.96) 100%); /* Gradasi Dark Blue Premium */
        backdrop-filter: blur(10px); /* Blur lebih kuat */
        border: 1px solid rgba(255, 255, 255, 0.08); /* Border tipis elegan */
        box-shadow: 0 20px 50px rgba(0,0,0,0.5); /* Shadow lebih dalam */
        z-index: 999;
        gap: 25px; /* Menambah jarak antar menu (spasi atas bawah) */
        
        /* Animasi Awal (Hidden) */
        opacity: 0;
        visibility: hidden;
        transform: scale(0.95);
        transition: all 0.3s ease-in-out;
    }
    
    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: scale(1);
    }

    /* Label Menu di Pojok Kiri Atas */
    .nav-links::before {
        content: "MENU UTAMA";
        position: absolute;
        top: 45px;
        left: 50px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.4);
        letter-spacing: 2px;
        font-weight: 600;
        opacity: 0; /* Hidden initially for animation */
        transition: opacity 0.5s ease 0.2s;
    }

    .nav-links a {
        color: #ffffff; /* Warna teks putih agar terlihat di background gelap */
        font-size: 1.3rem; /* Ubah nilai ini untuk memperbesar/memperkecil font */
        font-weight: 700;
        display: block;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 0 0 15px 0;
        transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        
        /* Initial State for Animation */
        opacity: 0;
        transform: translateY(20px);
    }

    /* Keyframes untuk Animasi Masuk */
    @keyframes slideInUp {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    /* Trigger Animasi saat Active */
    .nav-links.active::before {
        opacity: 1;
    }

    .nav-links.active a {
        animation: slideInUp 0.5s ease forwards;
    }

    /* Staggered Delay (Jeda Berurutan) */
    .nav-links.active a:nth-of-type(1) { animation-delay: 0.1s; }
    .nav-links.active a:nth-of-type(2) { animation-delay: 0.2s; }
    .nav-links.active a:nth-of-type(3) { animation-delay: 0.3s; }
    .nav-links.active a:nth-of-type(4) { animation-delay: 0.4s; }
    .nav-links.active a:nth-of-type(5) { animation-delay: 0.5s; }
    
    .nav-links.active .mobile-socials {
        animation: slideInUp 0.6s ease forwards 0.6s; /* Muncul paling akhir */
    }

    .nav-links a:hover {
        color: #64b5f6;
        padding-left: 20px; /* Geser lebih jauh */
        border-bottom-color: rgba(100, 181, 246, 0.3);
        background: linear-gradient(90deg, rgba(100, 181, 246, 0.1), transparent); /* Highlight halus */
        border-left: 3px solid #64b5f6; /* Indikator garis di kiri */
    }

    /* Close Button Style */
    .close-menu-btn {
        display: flex;
        position: absolute;
        top: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        top: 30px;
        right: 30px;
        width: 45px;
        height: 45px;
        background: rgba(255,255,255,0.1);
        border-radius: 50%;
        justify-content: center;
        align-items: center;
        font-size: 2.5rem;
        color: white;
        cursor: pointer;
        line-height: 1;
        padding-bottom: 5px; /* Penyesuaian vertikal ikon X */
        transition: all 0.3s ease;
    }

    .close-menu-btn:hover {
        background: rgba(255,255,255,0.25);
        transform: rotate(90deg);
        color: #ff6b6b;
    }

    /* Mobile Social Icons Styling */
    .mobile-socials {
        display: flex;
        gap: 20px;
        position: absolute;
        bottom: 50px; /* Disesuaikan agar pas di dalam kartu */
        
        /* Initial State */
        opacity: 0;
        transform: translateY(20px);
    }

    .mobile-socials a {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        background: #1e4b9c;
        color: white;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 1rem;
        box-shadow: 0 5px 15px rgba(30, 75, 156, 0.3);
    }

    /* Ubah warna hamburger jadi biru saat menu aktif (background putih) */
    .menu-toggle.active .bar {
        background-color: #ffffff;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 20px;
    }

    .hero {
        padding: 140px 0 70px; /* Mengurangi tinggi hero di HP */
        min-height: 100vh;
        display: flex;
        align-items: center;
    }
    .features, .about, .contact {
        padding: 40px 0; /* Mengurangi jarak antar section */
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo img {
        height: 30px;
    }
    
    h1 {
        font-size: 1.8rem; /* Judul utama lebih kecil */
    }
    
    h2 {
        font-size: 1.5rem; /* Sub-judul lebih kecil */
    }

    h3 {
        font-size: 1.25rem;
    }

    p {
        font-size: 0.9rem; /* Teks paragraf lebih kecil & nyaman */
    }

    /* Header style when menu is open */
    .main-header.menu-open {
        background-color: transparent !important; /* Override scrolled state */
        box-shadow: none;
    }

    .main-header.menu-open .logo {
        color: #ffffff; /* White text for logo */
    }
    
    .main-header.menu-open .logo img {
        filter: none; /* Keep logo original (white) */
    }

    /* Video Promo Mobile Adjustments */
    .video-wrapper {
        padding-top: 100%; /* Mengubah jadi kotak (Square) di HP agar teks muat */
    }

    .video-wrapper iframe {
        width: 200%; /* Memperlebar iframe agar video landscape menutupi area kotak */
        height: 100%;
    }

    .video-promo-content h2 {
        font-size: 1.5rem; /* Perkecil font judul di HP */
        margin-bottom: 10px;
    }

    .hero-content,
    .about-content {
        text-align: center;
    }

    .feature-icon {
        font-size: 2rem; /* Ikon tidak terlalu raksasa */
    }

    .btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }

    /* Responsive About Images */
    .about-img-wrapper {
        padding-right: 0;
        margin-bottom: 30px;
    }
    .about-img-1 {
        width: 100%;
    }
    .about-img-2 {
        width: 50%;
        bottom: -20px;
        right: -10px;
        border-width: 5px;
    }

    .gallery-section {
        padding: 50px 0;
    }

    .gallery-header {
        grid-template-columns: 1fr;
        gap: 5px;
        margin-bottom: 30px;
    }

    .gallery-section .section-header, .gallery-intro {
        text-align: center;
    }
    .gallery-section .section-header h2::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .gallery-section .section-header h2 {
        margin-bottom: 5px;
    }

    .gallery-intro {
        font-size: 1rem;
        margin-bottom: 10px;
    }

    /* Calculator Mobile */
    .calculator-container {
        flex-direction: column;
        gap: 30px;
    }

    .calculator-info, 
    .calculator-card {
        min-width: 100%;
        max-width: 100%;
    }

    .calculator-card {
        padding: 30px 20px;
    }

    /* Blog & Portfolio Mobile */
    .blog-grid {
        grid-template-columns: 1fr;
    }

    /* Footer Mobile Alignment */
    .footer-grid {
        text-align: center;
        grid-template-columns: 1fr;
    }

    .footer-logo {
        justify-content: center;
    }

    .contact-info li {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* CONTACT SECTION */
.contact {
    padding: 60px 0 80px;
    background-color: #f0f5ff;
}

.contact-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 60, 120, 0.05);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #1e4b9c;
}

/* BACK TO TOP BUTTON */
.back-to-top {
    position: fixed;
    bottom: 100px; /* Digeser ke atas agar tidak menutupi WA */
    right: 35px;   /* Diselaraskan tengah dengan tombol WA */
    width: 50px;
    height: 50px;
    background-color: #1e4b9c;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: #0a2b5e;
    transform: translateY(-5px);
}

/* FOOTER */
.footer {
    background-color: #051a3d; /* Biru sangat gelap */
    color: #cfd8dc;
    padding: 70px 0 25px;
    font-size: 0.95rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    color: white;
    font-weight: 700;
    font-size: 1.3rem;
}

.footer-logo img {
    height: 35px;
}

.footer-col h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 25px;
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    color: #cfd8dc;
    text-decoration: none;
    transition: all 0.3s;
}

.footer-col a:hover {
    color: #64b5f6;
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    color: white !important; /* Override warna link default */
    font-size: 0.8rem;
    font-weight: bold;
}

.social-icon:hover {
    background: #1e4b9c;
    transform: translateY(-3px);
    padding-left: 0 !important;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 25px;
    text-align: center;
    font-size: 0.9rem;
}

@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* WHATSAPP POPUP */
.whatsapp-popup {
    position: fixed;
    bottom: 30px;
    right: 30px; /* Pindah ke pojok kanan */
    width: 60px;
    height: 60px;
    background-color: #25d366;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.whatsapp-popup:hover {
    transform: scale(1.1);
}

.whatsapp-popup img {
    width: 35px;
    height: 35px;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* PRELOADER */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease 0.5s, visibility 0.5s ease 0.5s; /* Delay agar animasi sempat terlihat */
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-logo {
    width: 80px;
    animation: pulseLogo 1.5s ease-in-out infinite;
}

@keyframes pulseLogo {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* LIGHTBOX */
.lightbox {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
    border-radius: 5px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
    animation: zoom 0.3s;
}

@keyframes zoom {
    from {transform:scale(0.8); opacity: 0;}
    to {transform:scale(1); opacity: 1;}
}

.close-lightbox {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close-lightbox:hover {
    color: #bbb;
}

/* SCROLL ANIMATION */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* BLOG SECTION */
.blog {
    padding: 60px 0;
    background-color: white;
}

.blog-search-wrapper {
    max-width: 600px;
    margin: 0 auto 40px auto;
    position: relative;
}

#blogSearchInput {
    width: 100%;
    padding: 15px 20px;
    border-radius: 50px;
    border: 2px solid #e0e6ed;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

#blogSearchInput:focus {
    outline: none;
    border-color: #1e4b9c;
    box-shadow: 0 0 0 4px rgba(30, 75, 156, 0.1);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.blog-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border: 1px solid #eee;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.blog-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.blog-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.blog-card:hover .blog-img img {
    transform: scale(1.1);
}

.blog-date {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #1e4b9c;
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.blog-content {
    padding: 25px;
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    color: #1e4b9c;
    font-weight: 600;
    text-decoration: none;
    transition: padding-left 0.3s;
}

.read-more:hover {
    padding-left: 5px;
    color: #0a2b5e;
}

/* PAGINATION */
.pagination-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination-btn {
    width: 40px;
    height: 40px;
    border: 2px solid #e0e6ed;
    background: white;
    border-radius: 50%;
    cursor: pointer;
    font-weight: 600;
    color: #1e3a6b;
    transition: all 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: inherit;
}

.pagination-btn:hover:not(:disabled) {
    border-color: #1e4b9c;
    color: #1e4b9c;
}

.pagination-btn.active {
    background-color: #1e4b9c;
    color: white;
    border-color: #1e4b9c;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}