:root {
    --primary: #0077B6;
    --secondary: #90E0EF;
    --dark: #1A1A1A;
    --light: #F8F9FA;
    --white: #FFFFFF;
    --gray: #6C757D;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.grid {
    display: grid;
    gap: 40px;
}

@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Typography */
h1, h2, h3 {
    line-height: 1.2;
    margin-bottom: 20px;
    font-weight: 800;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

p { margin-bottom: 1rem; color: var(--gray); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #005f91;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 119, 182, 0.2);
}

/* Header */
.main-header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--dark);
    font-weight: 800;
    font-size: 1.5rem;
}

.logo-icon {
    background: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

/* Hero */
.hero {
    padding: 180px 0 100px;
    background: linear-gradient(135deg, #f0f9ff 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 700px;
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
}

/* Sections */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

/* Cards */
.card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
    border: 1px solid #eee;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--secondary);
}

.card i {
    color: var(--primary);
    margin-bottom: 20px;
}

/* About */
.about {
    background-color: var(--light);
}

.about-img img {
    width: 100%;
    border-radius: 20px;
}

/* Contact */
.contact-container {
    background: var(--white);
    padding: 50px;
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

input, textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-family: inherit;
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

.reveal-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
.main-footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 20px;
}

.main-footer .logo {
    color: white;
    margin-bottom: 20px;
}

.main-footer p {
    color: #bbb;
}

.main-footer h4 {
    margin-bottom: 20px;
    color: var(--white);
}

.main-footer ul {
    list-style: none;
}

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

.main-footer ul li a {
    color: #bbb;
    text-decoration: none;
    transition: var(--transition);
}

.main-footer ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid #333;
    text-align: center;
    font-size: 0.9rem;
}

.footer-bottom p {
    color: #777;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 40px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
}