/* ==========================================================================
   Переменные CSS и сброс стилей
   ========================================================================== */

:root {
    /* Цветовая палитра */
    --primary-color: #3E64FF;          /* Ультрамариновый */
    --secondary-color: #FFD500;         /* Солнечно-жёлтый */
    --background-color: #FAFAF9;        /* Тёплый светло-серый */
    --accent-color: #FF6B6B;            /* Кораллово-красный */
    --text-dark: #1A1A1A;
    --text-light: #666666;
    --text-muted: #9B9B9B;
    --white: #FFFFFF;
    --border-color: #E5E5E5;
    --shadow: 0 4px 20px rgba(62, 100, 255, 0.1);
    --shadow-hover: 0 8px 30px rgba(62, 100, 255, 0.15);
    
    /* Шрифты */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: 'Playfair Display', Georgia, serif;
    
    /* Размеры */
    --container-width: 1200px;
    --border-radius: 12px;
    --border-radius-small: 6px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Улучшенная типография */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.25rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin-bottom: 1rem;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1rem;
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.7;
    color: var(--text-light);
}

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

a:hover {
    color: var(--accent-color);
}

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

/* ==========================================================================
   Утилиты и общие классы
   ========================================================================== */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    border: 0;
    padding: 0;
    white-space: nowrap;
    clip-path: inset(100%);
    clip: rect(0 0 0 0);
    overflow: hidden;
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn:hover:before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #2950e6);
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2950e6, var(--primary-color));
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    color: var(--white);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-color), #ff5252);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(255, 107, 107, 0.3);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #ff5252, var(--accent-color));
    box-shadow: 0 8px 30px rgba(255, 107, 107, 0.4);
    transform: translateY(-2px);
    color: var(--white);
}

.btn-block {
    width: 100%;
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

/* Секции */
.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Элементы с анимацией */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Навигация
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(229, 229, 229, 0.5);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}

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

.logo-text {
    display: inline;
    margin-left: 0.5rem;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-dark);
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    text-decoration: none;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

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

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

.nav-cta {
    display: flex;
    align-items: center;
}

/* Menu mobile CSS-only */
.mobile-menu-checkbox {
    display: none;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    background: none;
    border: none;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 3px;
    transform-origin: center;
}

/* Animation du hamburger */
.mobile-menu-checkbox:checked + .mobile-menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-checkbox:checked + .mobile-menu-toggle span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-checkbox:checked + .mobile-menu-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    pointer-events: none;
    visibility: hidden;
}

.mobile-menu-content {
    background: var(--white);
    border-top: 1px solid var(--border-color);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1000;
}

.mobile-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 999;
}

/* Affichage du menu quand checkbox est coché */
.mobile-menu-checkbox:checked ~ .mobile-menu {
    pointer-events: auto;
    visibility: visible;
}

.mobile-menu-checkbox:checked ~ .mobile-menu .mobile-menu-content {
    transform: translateY(0);
}

.mobile-menu-checkbox:checked ~ .mobile-menu .mobile-overlay {
    opacity: 1;
}

.mobile-nav-list {
    list-style: none;
    padding: 2rem;
    margin: 0;
}

.mobile-nav-list li {
    margin-bottom: 1rem;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 0;
    color: var(--text-dark);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.mobile-nav-link:hover {
    color: var(--primary-color);
}

.mobile-cta {
    padding: 0 2rem 2rem;
}

.mobile-cta label {
    display: block;
}

/* Стили для label обертки */
.mobile-nav-list label,
.mobile-cta label {
    display: block;
    cursor: pointer;
}

.mobile-nav-list label:hover .mobile-nav-link {
    color: var(--primary-color);
}

/* ==========================================================================
   Медиазапросы для адаптивности
   ========================================================================== */

@media (max-width: 768px) {
    .nav-menu,
    .nav-cta {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .logo-text {
        display: inline;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

/* Автоматическое закрытие меню в десктопном режиме */
@media (min-width: 769px) {
    .mobile-menu-checkbox:checked {
        display: none;
    }
    
    .mobile-menu {
        display: none;
    }
}

@media (max-width: 480px) {
    .nav-container {
        height: 70px;
    }
    
    .mobile-menu {
        top: 70px;
    }
    
    .logo-link {
        font-size: 1.25rem;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .mobile-nav-list {
        padding: 1.5rem;
    }
    
    .mobile-cta {
        padding: 0 1.5rem 1.5rem;
    }
}

/* ==========================================================================
   Стили для основного контента
   ========================================================================== */

.main-content {
    margin-top: 80px;
}

/* Отступы для мобильных устройств */
@media (max-width: 480px) {
    .main-content {
        margin-top: 70px;
    }
}

/* ==========================================================================
   Footer Styles
   ========================================================================== */

.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4,
.footer-title {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
}

.footer-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-light);
}

.contact-item svg {
    width: 16px;
    height: 16px;
    color: var(--secondary-color);
}

.contact-item a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--secondary-color);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

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

.footer-bottom-content p {
    color: var(--text-light);
    margin: 0;
}

.footer-certifications {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ==========================================================================
   Cookie Popup Styles
   ========================================================================== */

.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(100%);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s ease;
}

.cookie-popup.cookie-popup-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.cookie-text {
    flex: 1;
}

.cookie-text h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-dark);
    font-size: 1.125rem;
}

.cookie-text p {
    margin: 0;
    color: var(--text-light);
    line-height: 1.5;
}

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

.cookie-text a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}

.cookie-buttons .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    white-space: nowrap;
}

.cookie-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.1);
    z-index: 999;
    pointer-events: none;
}

/* ==========================================================================
   Responsive Footer and Cookie Popup
   ========================================================================== */

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .cookie-buttons .btn {
        flex: 1;
        min-width: 120px;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer-content {
        gap: 1.5rem;
    }
    
    .cookie-popup {
        padding: 1rem;
    }
    
    .cookie-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cookie-buttons .btn {
        width: 100%;
    }
}