/* --- Global Styles & Variables --- */
:root {
    --primary-color: #0d47a1; /* Deep Blue */
    --secondary-color: #1a2b4c; /* Dark Navy */
    --accent-color: #42a5f5; /* Bright Blue */
    --text-color: #333;
    --light-text-color: #f4f4f4;
    --bg-color: #ffffff;
    --light-bg-color: #f7f9fc;
    --font-family: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Header & Navigation --- */
header {
    background-color: var(--secondary-color);
    color: var(--light-text-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-text-color);
    text-decoration: none;
}

header ul {
    display: flex;
    list-style: none;
}

header ul li a {
    color: var(--light-text-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

header ul li a:hover {
    color: var(--accent-color);
}

/* --- Hamburger Menu --- */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.hamburger .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--light-text-color);
}

/* --- Sections --- */
.section {
    padding: 4rem 0;
}

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

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(rgba(26, 43, 76, 0.8), rgba(26, 43, 76, 0.8)), url('images/background.jpg') no-repeat center center/cover;
    color: var(--light-text-color);
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 1rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero .subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 2rem;
    max-width: 600px;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--light-text-color);
    padding: 1rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: var(--primary-color);
}

/* --- Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* --- Portfolio Section --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background: var(--bg-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.portfolio-item img {
    width: 100%;
    height: auto;
    display: block;
}

.portfolio-item h3 {
    color: var(--primary-color);
    padding: 1.5rem 1.5rem 0.5rem 1.5rem;
}

.portfolio-item p {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

/* --- Testimonials Section --- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.testimonial-card img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    object-fit: cover;
}

.testimonial-card blockquote {
    font-style: italic;
    color: #555;
    margin-bottom: 1rem;
}

.testimonial-author {
    font-weight: 700;
    color: var(--primary-color);
    margin-top: auto;
}

/* --- Contact Form --- */
.contact-form {
    max-width: 600px;
    margin: 1rem auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-family: var(--font-family);
}

/* --- Footer --- */
footer {
    background-color: var(--secondary-color);
    color: var(--light-text-color);
    text-align: center;
    padding: 2rem 0;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    header ul {
        position: absolute;
        top: 100%; /* Position right below the header */
        left: 0;
        background-color: var(--secondary-color);
        width: 100%;
        flex-direction: column;
        align-items: center;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
    }

    header ul.active {
        max-height: 500px; /* A value larger than the menu's height */
        padding: 1rem 0;
    }

    header ul li {
        width: 100%;
        text-align: center;
    }

    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}