:root {
    --primary-color: #0f4c81; /* Classic Blue - More professional */
    --primary-light: #4a8cbf;
    --primary-dark: #00264d;
    --secondary-color: #00d2d3; /* Vibrant Cyan for accents */
    --accent-color: #f0f4f8; /* Soft blue-grey background */
    --text-color: #2d3436;
    --light-text: #636e72;
    --white: #ffffff;
    --dark-bg: #1e272e;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

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

body {
    font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Header & Navigation */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    position: relative;
}

.logo::after {
    content: '.';
    color: var(--secondary-color);
    font-size: 2rem;
    line-height: 0;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    cursor: pointer;
    z-index: 1001;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(15, 76, 129, 0.9), rgba(0, 210, 211, 0.7)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=1352&q=80') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding: 0 1rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    line-height: 1.2;
    text-shadow: 0 4px 10px rgba(0,0,0,0.2);
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.2s forwards;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    font-weight: 300;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.5s forwards;
}

.hero-btns {
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.8s forwards;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 5px 15px rgba(0, 210, 211, 0.3);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.btn:hover {
    background-color: #00b8b9;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 210, 211, 0.4);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--white);
    margin-left: 1rem;
    box-shadow: none;
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
}

/* Sections */
section {
    padding: 6rem 2rem;
    position: relative;
}

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

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 800;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.section-title p {
    color: var(--light-text);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* About Preview */
.about-preview {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.about-image {
    flex: 1;
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.5s ease;
}

.about-image:hover img {
    transform: scale(1.02);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100px;
    height: 100px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.2;
}

.about-image::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 150px;
    height: 150px;
    border: 5px solid var(--primary-light);
    border-radius: 20px;
    z-index: -1;
    opacity: 0.1;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    margin-bottom: 1.5rem;
    font-size: 2.2rem;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--light-text);
    font-size: 1.05rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background-color: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: var(--gradient);
    transition: height 0.4s ease;
    z-index: -1;
    opacity: 0.05;
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--hover-shadow);
    border-color: transparent;
}

.service-card:hover::before {
    height: 100%;
    opacity: 1;
}

.service-icon {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: all 0.4s ease;
    display: inline-block;
    padding: 15px;
    background: rgba(15, 76, 129, 0.05);
    border-radius: 50%;
}

.service-card:hover .service-icon {
    background: rgba(255,255,255,0.2);
    color: var(--white);
    transform: rotateY(180deg);
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 700;
    transition: color 0.4s ease;
}

.service-card:hover h3 {
    color: var(--white);
}

.service-card p {
    color: var(--light-text);
    transition: color 0.4s ease;
}

.service-card:hover p {
    color: rgba(255,255,255,0.9);
}

/* Footer */
footer {
    background-color: var(--dark-bg);
    color: var(--white);
    padding: 5rem 2rem 2rem;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    margin-bottom: 4rem;
}

.footer-section h3 {
    margin-bottom: 2rem;
    color: var(--white);
    font-size: 1.4rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 3px;
    background-color: var(--secondary-color);
}

.footer-section p {
    margin-bottom: 1rem;
    color: #a0a0a0;
    line-height: 1.8;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: #a0a0a0;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #777;
    font-size: 0.9rem;
}

/* Page Headers (for subpages) */
.page-header {
    background: linear-gradient(135deg, rgba(15, 76, 129, 0.9), rgba(0, 210, 211, 0.7)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-align: center;
    margin-top: 0; /* Removed offset as header is transparent initially */
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: linear-gradient(to top, var(--white), transparent);
}

.page-header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    text-shadow: 0 5px 15px rgba(0,0,0,0.2);
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.2s forwards;
}

/* Contact Form */
.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 3rem;
    margin-top: -5rem; /* Overlap with header */
    position: relative;
    z-index: 10;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.info-item {
    margin-bottom: 2.5rem;
    display: flex;
    align-items: flex-start;
}

.info-icon {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-right: 1.5rem;
    margin-top: 5px;
    background: rgba(0, 210, 211, 0.1);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.info-item:hover .info-icon {
    background: var(--secondary-color);
    color: var(--white);
    transform: rotate(15deg);
}

.info-item h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.contact-form {
    flex: 2;
    min-width: 300px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #eee;
    border-radius: 8px;
    font-family: inherit;
    transition: all 0.3s ease;
    background-color: #f9f9f9;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--secondary-color);
    background-color: var(--white);
    outline: none;
    box-shadow: 0 0 0 4px rgba(0, 210, 211, 0.1);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* Responsive */
@media (max-width: 768px) {
    .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);
    }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 70px;
        gap: 0;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        padding: 2rem 0;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 1.5rem 0;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .about-preview {
        flex-direction: column;
        gap: 2rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }
    
    .contact-container {
        padding: 2rem;
        margin-top: 0;
    }
}