/* =================================================================
   SKEMA WARNA DAN FONT PREMIUM
================================================================= */

/* Warna Dasar (Disesuaikan dari logo hijau gelap) */
:root {
    --primary-color: #145a32;   /* Hijau Gelap (Elegant/Tombol Utama/Footer) */
    --light-green: #93c47d;     /* Hijau Muda (Aksen Visual/Ikon) */
    --accent-green: #38761d;    /* Hijau Medium (Hover/Border) */
    
    /* Nuansa Abu-abu Premium */
    --bg-light-gray: #ffffff;
    --bg-mid-gray: #f2f4f6;     /* Section background */
    
    /* Warna Teks */
    --text-color: #343a40;
    --secondary-text: #6c757d;
    
    /* Shadow */
    --soft-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.08);
}

/* Font Setting */
body {
    font-family: 'Open Sans', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-light-gray);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    color: var(--primary-color);
}

.section-heading {
    font-weight: 800;
    margin-bottom: 3.5rem;
    text-transform: uppercase;
    font-size: 2.2rem;
    color: var(--primary-color);
    letter-spacing: 1.5px;
}

/* =================================================================
   NAVIGATION BAR & HERO SECTION
================================================================= */

/* Buttons Styling */
.btn-primary {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    font-weight: 600;
    transition: all 0.3s;
}
.btn-primary:hover, .hero-cta:hover {
    background-color: var(--accent-green) !important;
    border-color: var(--accent-green) !important;
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.2);
}
.btn-outline-light {
    border-color: #fff !important;
    color: #fff !important;
    font-weight: 600;
    transition: all 0.3s;
}

/* Navbar */
#mainNav {
    background-color: rgba(255, 255, 255, 0); 
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease;
}
#mainNav .navbar-brand, #mainNav .nav-link {
    color: #fff !important;
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8); /* Shadow lebih gelap agar teks terbaca di hero */
    font-weight: 600;
}
/* Navbar Saat Scroll (Glassmorphism effect) */
#mainNav.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}
#mainNav.scrolled .navbar-brand, #mainNav.scrolled .nav-link {
    color: var(--primary-color) !important;
    text-shadow: none;
}
#mainNav.scrolled .nav-link:hover {
    color: var(--accent-green) !important;
}


/* HERO SECTION - Background Dramatis */
.hero-section {
    /* Gunakan placeholder atau gambar air yang relevan */
    background: 
        linear-gradient(rgba(17, 30, 11, 0.92), rgba(97, 169, 68)), /* Overlay gelap */
        url('https://via.placeholder.com/1920x800?text=Water+Drilling+Rig');
    background-size: cover;
    background-position: center center;
    padding: 10rem 0 8rem 0; /* Padding lebih besar */
    min-height: 85vh;
}
.hero-section .display-2 {
    font-size: 3.8rem;
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
}


/* =================================================================
   CARD SECTIONS (PROSES & LAYANAN)
================================================================= */
.bg-mid-gray {
    background-color: var(--bg-mid-gray) !important;
}

/* Langkah-langkah (Proses) */
.step-card {
    background-color: #fff;
    border: none;
    border-radius: 0.75rem;
    min-height: 250px;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.05) !important; /* Soft Shadow yang lebih terasa */
}
.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.15) !important;
    border-bottom: 5px solid var(--accent-green);
}
.step-card .fa-3x {
    color: var(--accent-green);
}

/* Layanan Card - Tampilan Gambar Lebih Rapi */
.service-card {
    background: #fff;
    border: 1px solid #e9e9e9;
    border-radius: 0.75rem;
    overflow: hidden;
    height: 100%;
    transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
    box-shadow: 0 0.2rem 0.5rem rgba(0, 0, 0, 0.05);
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.15) !important;
    border-color: var(--accent-green); /* Border hover */
}
.card-img-wrapper {
    position: relative;
    overflow: hidden;
}
.service-card img {
    height: 220px; 
    width: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.service-card:hover img {
    transform: scale(1.05);
}
.card-title-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(20, 90, 50, 0.85); /* Overlay judul */
    color: white;
    padding: 0.5rem 1rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
}
.service-card .large-card-img {
    height: 300px;
}
.service-card .card-body {
    padding: 1.5rem;
}

/* Testimonial */
.testimonial-box {
    background-color: var(--bg-light-gray);
    border-radius: 0.75rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}
.testimonial-box:hover {
    box-shadow: 0 0.7rem 1.5rem rgba(0, 0, 0, 0.15);
}
.testimonial-box .border-start {
    border-color: var(--accent-green) !important;
}

/* Footer */
footer {
    background-color: var(--primary-color) !important;
}

/* Floating Chat Button (WhatsApp) */
.floating-chat-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    background-color: #25D366; 
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 65px;
    font-size: 2.5rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.4);
    z-index: 1050;
    transition: background-color 0.3s, transform 0.3s;
}
.floating-chat-btn:hover {
    background-color: #128C7E;
    transform: scale(1.1);
}