/* CSS Variables & Theme */
:root {
    --primary: #0A192F; /* Deep midnight blue */
    --secondary: #64FFDA; /* Bright Cyan - energetic, air/water vibe */
    --accent: #112240; /* Lighter blue for cards */
    --text-main: #E6F1FF; /* Bright text */
    --text-muted: #8892B0; /* Muted text */
    --bg-dark: #020c1b;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-main: 'Inter', sans-serif;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--primary);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-main);
    margin-bottom: 1rem;
    font-weight: 800;
}

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

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background: transparent;
}

.header.scrolled {
    background: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 1px;
}

.logo-text {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

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

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--secondary);
    margin: 5px 0;
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--secondary);
    color: var(--primary);
    border: 1px solid var(--secondary);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--secondary);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary);
    border: 1px solid var(--secondary);
}

.btn-secondary:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--secondary);
    color: var(--secondary);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/hero.png');
    background-size: cover;
    background-position: center;
    z-index: -2;
    transform: scale(1.05); /* Slight scale for animation potential */
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(2, 12, 27, 0.9) 0%, rgba(10, 25, 47, 0.6) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.hero p {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

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

.service-card {
    background-color: var(--accent);
    padding: 2.5rem 2rem;
    border-radius: 8px;
    transition: var(--transition);
    border-bottom: 4px solid transparent;
    cursor: default;
}

.service-card:hover {
    transform: translateY(-10px);
    border-bottom: 4px solid var(--secondary);
    box-shadow: 0 20px 30px -15px rgba(2, 12, 27, 0.7);
}

.card-icon {
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.service-card p {
    color: var(--text-muted);
}



/* Contact Section */
.contact-email {
    color: var(--secondary);
    font-weight: 600;
}

.contact-email:hover {
    text-decoration: underline;
}

.contact-card {
    background-color: var(--accent);
    padding: 3rem;
    border-radius: 8px;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: 0 20px 30px -15px rgba(2, 12, 27, 0.7);
}

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

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary);
    border: 1px solid rgba(136, 146, 176, 0.2);
    border-radius: 4px;
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 2px rgba(100, 255, 218, 0.1);
}

.submit-btn {
    width: 100%;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    padding: 2rem 0;
    border-top: 1px solid rgba(136, 146, 176, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.footer-links p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations (Intersection Observer) */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.fade-in.appear {
    opacity: 1;
}

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

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

.fade-in-left {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-left.appear {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-right.appear {
    opacity: 1;
    transform: translateX(0);
}

/* Responsive */
@media (max-width: 900px) {
    .about-container {
        grid-template-columns: 1fr;
    }
    .about-image-placeholder {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--accent);
        padding: 2rem;
        flex-direction: column;
        align-items: center;
        box-shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero h1 {
        font-size: 2.5rem;
    }
    
    .qualifications {
        grid-template-columns: 1fr;
    }
}