:root {
    --primary-color: #007EC6;
    --secondary-color: #00ADEF;
    --dark-color: #132869;
    --light-color: #DDB294;
    --bg-accent: #132869;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
}
.section-padding {
    padding: 6rem 0; /* Reduced padding for a tighter design */
}
.text-container-md {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
.bg-dark-section {
    background-color: var(--dark-color);
    color: white;
}
.bg-accent-section {
    background-color: var(--bg-accent);
}
.btn-lang {
    padding: 0.5rem 1rem;
    border-radius: 9999px; /* Rounded pill shape */
    font-weight: 700;
    transition: transform 0.3s ease;
}
.btn-lang:hover {
    transform: scale(1.1);
}
.navbar {
    /* Smooth transition for background color and shadow */
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
}
/* Style for the navbar when scrolled */
.navbar.scrolled {
    background-color: var(--primary-color);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075); /* Replicates Bootstrap's .shadow-sm */
}
.navbar-brand .logo-icon {
    font-size: 1.5rem;
    color: var(--secondary-color);
}
.navbar-brand img {
    max-height: 40px; /* Adjust logo size to fit navbar */
}
.nav-link {
    transition: color 0.3s ease;
}
.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
    color: var(--secondary-color);
}
.navbar-dark .navbar-nav .nav-link.active {
    font-weight: 600; /* Make active link slightly bolder */
}
.card {
    border: none;
    border-radius: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
/* Apply a hover effect to all cards, except for the ones in the services section */
.card:not(#services .card):hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}
.card-icon {
    font-size: 3.5rem;
    color: var(--primary-color);
}
/* Removed .text-justify for better readability, browser default (left/start) is better */

.parallax-section {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    color: white;
    padding: 10rem 0;
}

/* Disable parallax on mobile for performance and usability */
@media (max-width: 991.98px) {
    .parallax-section {
        background-attachment: scroll;
    }
}

#hero {
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('./about1.png');
}
#vision {
    background-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('./awj1.jpg');
}
#purpose {
    background-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('./awj5.png');
}
#our-commitment {
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('./awj6.png');
}
#compliance {
    background-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('./awj3.png');
}

/* Make section titles stand out on light backgrounds */
.section-padding:not(.bg-dark-section) h1,
.section-padding:not(.bg-dark-section) h2 {
    color: var(--primary-color);
}
.text-primary-accent {
    color: var(--primary-color);
}
.list-icon {
    color: var(--secondary-color);
}
.contact-form-card {
    background-color: var(--light-color);
}

.form-control {
    background-color: #fff;
    border: 1px solid #ced4da;
}
#contact .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(0, 126, 198, 0.25);
}
.form-control {
    border-radius: 0.75rem;
}
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 0.75rem;
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
}
.bg-light-section {
    background-color: var(--light-color);
}

/* --- Hero Section Button Customization --- */
#hero .btn-primary {
    background-color: transparent;
    border: 2px solid white;
    color: white;
    font-weight: 700;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

#hero .btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

.certificate-img {
    max-width: 100%;
    height: auto;
    display: block;
    transform: scale(1.1); /* Initially zoom in the image */
    transition: transform 0.4s ease;
}

.certificate-container {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    border: 3px solid var(--secondary-color);
    cursor: pointer;
}

.certificate-container:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.certificate-container:hover .certificate-img {
    transform: scale(1); /* Zoom out to original size on hover */
}

/* --- Flip Card Effect for Services --- */
#services .card-container {
    perspective: 1000px; /* 3D space for the flip */
    min-height: 250px; /* Ensure consistent height for flipping */
}

#services .card {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    /* Remove default card hover effect */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

#services .card:hover {
    transform: rotateY(180deg);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1); /* Keep shadow effect on hover */
}

#services .card-front,
#services .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden; /* For Safari */
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    border-radius: 1.5rem; /* Match the card's border-radius */
}

#services .card-front {
    background-color: #fff; /* Card front background */
}

#services .card-back {
    background-color: var(--dark-color); /* Card back background */
    color: white;
    transform: rotateY(180deg);
}

/* --- Scroll Animation --- */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Preloader Spinner --- */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--dark-color);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.aircraft-spinner {
    font-size: 4rem;
    color: var(--secondary-color);
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- Back to Top Button --- */
#back-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1030; /* High z-index to stay on top */
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
}

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

#back-to-top-btn:hover {
    background-color: var(--secondary-color);
    color: white;
}