:root {
    --primary-color: #3f51b5;
    --primary-dark: #303f9f;
    --primary-light: #c5cae9;
    --secondary-color: #ff4081;
    --accent-color: #ff5722;
    --text-primary: #212121;
    --text-secondary: #757575;
    --divider-color: #bdbdbd;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-dark: #263238;
    --shadow-1: 0 2px 4px rgba(0,0,0,0.14), 0 3px 4px rgba(0,0,0,0.12), 0 1px 5px rgba(0,0,0,0.2);
    --shadow-2: 0 4px 8px rgba(0,0,0,0.14), 0 6px 10px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.2);
    --shadow-3: 0 8px 16px rgba(0,0,0,0.14), 0 12px 24px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.2);
    --border-radius: 4px;
    --border-radius-lg: 8px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 400;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 400;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 500;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

img.styled-image {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-2);
}

.cards-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-dark {
    background-color: var(--bg-dark);
    color: #ffffff;
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: #ffffff;
}

.section-dark p {
    color: rgba(255, 255, 255, 0.87);
}

.text-center {
    text-align: center;
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

header {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

nav a {
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

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

nav a:hover::after {
    width: 100%;
}

.burger-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.burger-menu span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
}

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero h1 {
    color: #ffffff;
    margin-bottom: var(--spacing-md);
}

.hero p {
    color: rgba(255, 255, 255, 0.87);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

.page-hero {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-hero h1 {
    color: #ffffff;
}

.page-subtitle {
    color: rgba(255, 255, 255, 0.87);
    font-size: 1.125rem;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-2);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-3);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: #e91e63;
    box-shadow: var(--shadow-3);
    transform: translateY(-2px);
}

.card {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg) 10px;
    box-shadow: var(--shadow-1);
    transition: var(--transition);
}

.section-dark .card h3 {
    color: #000000;
}

.section-dark .card h4 {
    color: #000000;
}

.section-dark .card p {
    color: #000000;
}

.card:hover {
    box-shadow: var(--shadow-3);
    transform: translateY(-4px);
}

.feature-item {
    text-align: center;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.service-card:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.service-card h3 {
    color: #ffffff;
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: rgba(255, 255, 255, 0.87);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-info h2 {
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin-top: var(--spacing-lg);
}

.contact-item {
    margin-bottom: var(--spacing-lg);
}

.contact-item h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.contact-form {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-2);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--divider-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--bg-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.checkbox-group input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    cursor: pointer;
}

footer {
    background-color: var(--bg-dark);
    color: #ffffff;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.87);
    margin-bottom: var(--spacing-sm);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.87);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: #ffffff;
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

@media (max-width: 768px) {
    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        box-shadow: var(--shadow-2);
        padding: var(--spacing-md);
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .burger-menu {
        display: flex;
    }

    .burger-menu.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .burger-menu.active span:nth-child(2) {
        opacity: 0;
    }

    .burger-menu.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .grid-2,
    .grid-3,
    .grid-4,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

    .hero-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .header-content {
        padding: var(--spacing-sm);
    }

    .btn {
        padding: 10px 24px;
        font-size: 0.9375rem;
    }
}