/* --- Variables & Setup --- */
:root {
    --primary-blue: #0056b3;
    --secondary-blue: #0d6efd;
    --accent-green: #20c997;
    --bg-light: #f8f9fa;
    --text-dark: #333333;
    --text-muted: #6c757d;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 5px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #004494;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background-color: #25D366;
    color: var(--white);
}

.btn-whatsapp:hover {
    background-color: #1ebe5d;
    transform: translateY(-2px);
}

.btn-outline {
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 8px 16px;
}

.btn-outline:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.btn-block {
    display: block;
    width: 100%;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--white);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 15px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links a:hover {
    color: var(--secondary-blue);
}

/* --- Hero Section --- */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 86, 179, 0.8), rgba(32, 201, 151, 0.8)), url('https://images.unsplash.com/photo-1519494026892-80bbd2d6fd0d?auto=format&fit=crop&q=80') center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px; /* offset for navbar */
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.tagline {
    font-size: 1.5rem;
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* --- Cards Grid (Services & Why Us) --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    text-align: center;
    border-top: 4px solid var(--accent-green);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--secondary-blue);
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.feature-item {
    text-align: center;
    padding: 20px;
}

.feature-item i {
    font-size: 3rem;
    color: var(--accent-green);
    margin-bottom: 15px;
}

/* --- Form --- */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.2);
}

/* --- Contact & Footer --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    background: var(--bg-light);
    padding: 15px;
    border-radius: 50%;
}

.info-item h4 {
    margin-bottom: 5px;
}

footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.social-icons a {
    color: var(--white);
    font-size: 1.5rem;
    margin-right: 15px;
    transition: var(--transition);
}

.social-icons a:hover {
    color: var(--accent-green);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
}

/* --- Floating WhatsApp --- */
.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25D366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: var(--transition);
}

.floating-whatsapp:hover {
    transform: scale(1.1);
    background-color: #1ebe5d;
}

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* --- Media Queries --- */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* In a real app, you'd add a hamburger menu here */
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}