:root {
    --primary-color: #5A67D8; 
    --secondary-color: #A0AEC0; 
    --background-color: #F7FAFC; 
    --text-color: #2D3748; 
    --highlight-color: #F6AD55;
    --navbar-bg: #1A202C; 
    --navbar-text: #FFFFFF;
    --navbar-hover: #F6AD55;
}
/* General body styling */
body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}
h2 {
    padding-bottom: 20px;
}
h1, h2, h3, h4 {
    letter-spacing: 0.5px;
    font-weight: 600;
}

p {
    line-height: 1.8;
    font-size: 1.05rem;
}

/* Hero Section */
.hero {
    background: url('https://images.unsplash.com/photo-1664109070325-202b9f2bcbc8?q=80&w=2071&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-content {
    text-align: center;
    color: white;
}
.hero-content a {
    margin-top: 20px;
    display: inline-block;
}
/* Buttons */
.btn-primary {
    background-color: var(--highlight-color);
    border: 2px solid transparent;
    padding: 12px 30px;
    font-weight: bold;
    letter-spacing: 0.5px;
    transition: background-color 0.3s ease, border 0.3s ease;
    border-radius: 10px;
}
.btn-primary:hover {
    background-color: transparent;
    border: 2px solid var(--highlight-color);
    color: var(--highlight-color);
}
/* Links */
a {
    color: white;
    text-decoration: none;
}
a:hover {
    color: var(--primary-color);
}
/* Navbar */
.navbar {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10;
    transition: background-color 0.3s ease-in-out;
    background-color: var(--navbar-bg);
}
.logo-img {
    height: 100px;
    width: auto;
    transition: transform 0.3s ease;
}
@media (max-width: 768px) {
    .logo-img {
        height: 50px;
    }
}
.navbar-brand:hover .logo-img {
    transform: scale(1.1);
}
.navbar.transparent {
    background-color: rgba(255, 255, 255, 0);
}
.navbar.scrolled {
    background-color: var(--navbar-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.navbar a.nav-link {
    color: var(--navbar-text);
    font-weight: 500;
    padding: 10px 15px;
    transition: color 0.3s ease;
}
.navbar a.nav-link:hover {
    color: var(--navbar-hover);
}
.navbar .nav-link.active {
    color: var(--highlight-color);
    font-weight: bold;
    border-bottom: 2px solid var(--highlight-color);
}
.navbar-toggler {
    border-color: rgba(255, 255, 255, 0);
}
.navbar-toggler:focus,
.navbar-toggler:active {
    outline: none; 
    box-shadow: none; 
    border-color: rgba(255, 255, 255, 0.5);
}
.navbar-toggler-icon {
    filter: invert(1);
}
.navbar-brand {
    color: var(--navbar-text);
    font-weight: 500;
    font-size: 30px;
    padding: 10px 15px;
}
.navbar-brand:hover,
.navbar-brand:active,
.navbar-brand:focus {
    color: var(--navbar-hover);
}
/* Section Styling */
.section {
    padding: 60px 0;
}
.section h2 {
    color: var(--text-color);
}
.section p {
    color: var(--text-color);
}
/* Service Card */
.service-card {
    position: relative;
    background: white;
    border: none;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}
.service-card .icon-wrapper {
    margin-bottom: 15px;
    color: var(--highlight-color);
}
.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--text-color);
}
.service-card p {
    font-size: 0.9rem;
    color: var(--secondary-color);
}
.service-card .btn-details {
    margin-top: 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 5px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.service-card .btn-details:hover {
    background-color: var(--highlight-color);
}
.service-card .service-details {
    margin-top: 15px;
    display: none;
    font-size: 0.85rem;
    color: var(--text-color);
}
.service-card .service-details.visible {
    display: block;
}
/* Portfolio Cards */
.portfolio .card {
    width: 100%;
    margin: 20px 0;
    padding: 0;
    border: none;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    position: relative;
}
.portfolio .card img {
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    max-height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.portfolio .card:hover img {
    transform: scale(1.1); 
}
.portfolio .card .card-body {
    padding: 20px;
    background-color: var(--background-color);
}
.portfolio .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}
/* Anchor Styling */
.card-link {
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease;
}

.card-link:hover {
    transform: scale(1.02);
}
/* Contact */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(108, 99, 255, 0.25);
}
/* Footer */
footer {
    background-color: var(--text-color);
    color: white;
    padding: 40px 0;
}

footer a {
    color: var(--highlight-color);
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

footer h5 {
    font-size: 1.25rem;
    margin-bottom: 20px;
}

footer ul {
    padding: 0;
    list-style: none;
}

footer .list-inline-item i {
    font-size: 1.5rem;
    color: var(--highlight-color);
    margin: 0 10px;
}

footer .list-inline-item i:hover {
    color: var(--primary-color);
}
/* Back to top button */
#backToTopBtn {
    position: fixed;
    bottom: 40px;
    right: 30px;
    z-index: 99;
    font-size: 18px;
    width: 50px;
    height: 50px;
    line-height: 50px;
    border: none;
    outline: none;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: opacity 0.3s, background-color 0.3s;
    opacity: 0;
    visibility: hidden;
}

#backToTopBtn:hover {
    background-color: var(--highlight-color);
}

#backToTopBtn.show {
    opacity: 1;
    visibility: visible;
}