/* Modern CSS Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #1a1a2e;
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --text-primary: #1a1a2e;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --bg-light: #f8fafc;
    --bg-section: #f1f5f9;
    --border-color: #e2e8f0;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.header-contacts {
    display: flex;
    align-items: center;
    gap: 24px;
}

.phone-block {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.phone-label {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.2;
}

.phone {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
    transition: color var(--transition-fast);
}

.phone:hover {
    color: var(--primary-hover);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .header-contacts {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--white) 0%, var(--bg-light) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: fadeInLeft 0.8s ease-out;
}

.hero-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.hero-image:hover img {
    transform: scale(1.05);
}

.hero-text {
    animation: fadeInRight 0.8s ease-out;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 400px;
}

.hero-note {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 24px;
    max-width: 400px;
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-image {
        order: 2;
    }
    
    .hero-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-image img {
        height: 350px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-description {
        font-size: 16px;
    }
}

/* Section Common Styles */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.highlight {
    color: var(--primary-color);
    font-weight: 600;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
}

/* Services Section */
.services {
    padding: 100px 0;
    background-color: var(--bg-section);
}

.services-list {
    max-width: 900px;
    margin: 0 auto;
}

.service-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.service-item:hover {
    padding-left: 16px;
}

.service-item:first-child {
    border-top: 1px solid var(--border-color);
}

.service-text {
    flex: 1;
    padding-right: 40px;
}

.service-text p {
    font-size: 17px;
    color: var(--text-primary);
    line-height: 1.5;
}

.service-badge {
    flex-shrink: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
    padding: 8px 16px;
    background-color: var(--primary-light);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.services-footer {
    text-align: center;
    margin-top: 40px;
    font-size: 14px;
    color: var(--text-muted);
}

.services-footer a {
    color: var(--primary-color);
    text-decoration: underline;
}

.services-footer a:hover {
    color: var(--primary-hover);
}

@media (max-width: 768px) {
    .services {
        padding: 60px 0;
    }
    
    .service-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 24px 0;
    }
    
    .service-text {
        padding-right: 0;
    }
    
    .service-text p {
        font-size: 15px;
    }
}

/* Advantages Section */
.advantages {
    padding: 100px 0;
    background-color: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    aspect-ratio: 3/4;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.advantage-image {
    position: absolute;
    inset: 0;
}

.advantage-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.advantage-card:hover .advantage-image img {
    transform: scale(1.1);
}

.advantage-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.1) 100%);
    color: var(--white);
}

.advantage-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}

.advantage-content p {
    font-size: 14px;
    line-height: 1.5;
    opacity: 0.9;
}

@media (max-width: 1200px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantage-card {
        aspect-ratio: 4/3;
    }
}

@media (max-width: 768px) {
    .advantages {
        padding: 60px 0;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-card {
        aspect-ratio: 16/10;
    }
}

/* CTA Section */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-light) 100%);
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-form {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 0;
    align-items: flex-start;
}

.cta-form .form-group {
    flex: 1;
    min-width: 200px;
}

.cta-form .form-group[style="display: none;"] {
    display: none !important;
}

.cta-form button {
    height: fit-content;
    margin-top: 0;
}

.cta-form .form-message {
    width: 100%;
    margin-top: 8px;
}

.form-message {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    display: none;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

.form-message.success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.form-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group {
    flex: 1;
}

.form-group input {
    width: 100%;
    padding: 16px 20px;
    font-size: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--white);
    transition: all var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.cta-note {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .cta {
        padding: 60px 0;
    }
    
    .cta-title {
        font-size: 26px;
    }
    
    .cta-form {
        flex-direction: column;
    }
    
    .form-group input {
        padding: 14px 16px;
    }
}

/* Footer */
.footer {
    padding: 60px 0 40px;
    background-color: var(--white);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-info .logo {
    font-size: 20px;
}

.copyright {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 15px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-contacts {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
}

.footer-phone {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.footer-phone:hover {
    color: var(--primary-hover);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-light);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

@media (max-width: 992px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 32px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-contacts {
        align-items: center;
    }
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 480px;
    margin: 24px;
    padding: 40px;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(20px);
    transition: all var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--bg-light);
    color: var(--text-primary);
}

.modal-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    text-align: center;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-form .form-group input {
    padding: 14px 18px;
}

/* Animations */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Scroll Reveal Animation Classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* Success Message */
.success-message {
    text-align: center;
    padding: 40px 20px;
}

.success-message h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.success-message p {
    color: var(--text-secondary);
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}