/* ПРОМ-МАРКТ - Стили сайта */

/* CSS Variables */
:root {
    --primary-color: #FF7A00;
    --primary-dark: #E66A00;
    --text-color: #111111;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-color: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-card: #FFFFFF;
    --border-color: #E5E5E5;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 8px 40px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --border-radius-large: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1200px;
    --container-padding: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
}

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

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

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

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    background: none;
    white-space: nowrap;
    gap: 8px;
}

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

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

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

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

.btn-outline {
    background: transparent;
    color: var(--text-color);
    border-color: var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-full {
    width: 100%;
}

.btn-telegram {
    background: #0088cc;
    color: white;
    border-color: #0088cc;
}

.btn-telegram:hover {
    background: #006699;
    border-color: #006699;
}

.btn-whatsapp {
    background: #25d366;
    color: white;
    border-color: #25d366;
}

.btn-whatsapp:hover {
    background: #128c7e;
    border-color: #128c7e;
}

.btn svg {
    width: 18px;
    height: 18px;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    pointer-events: none;
}

.cart-animation {
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

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

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 0;
    gap: 2rem;
}

.logo-container {
    flex-shrink: 0;
}

.logo {
    height: 100px;
    width: auto;
    transition: var(--transition);
    filter: drop-shadow(0 2px 8px rgba(255, 122, 0, 0.2));
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 12px rgba(255, 122, 0, 0.3));
}

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

.nav-link {
    font-weight: 500;
    color: var(--text-color);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    gap: 4px;
}

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

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    z-index: -1;
}

.pattern-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 122, 0, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 122, 0, 0.03) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-logo {
    margin-bottom: 2rem;
    animation: logoEntrance 1.5s ease-out;
}

.hero-logo-img {
    height: 200px;
    width: auto;
    filter: drop-shadow(0 6px 25px rgba(255, 122, 0, 0.4));
    animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
    0% {
        filter: drop-shadow(0 6px 25px rgba(255, 122, 0, 0.4));
    }
    100% {
        filter: drop-shadow(0 8px 35px rgba(255, 122, 0, 0.6));
    }
}

@keyframes logoEntrance {
    0% {
        opacity: 0;
        transform: scale(0.5) translateY(30px);
    }
    60% {
        transform: scale(1.1) translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.hero-title {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    color: var(--text-light);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.9s both;
}

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

/* Sections */
section {
    padding: 80px 0;
}

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

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Categories Section */
.categories {
    background: var(--bg-light);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.category-card {
    animation: slideInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }
.category-card:nth-child(5) { animation-delay: 0.5s; }
.category-card:nth-child(6) { animation-delay: 0.6s; }
.category-card:nth-child(7) { animation-delay: 0.7s; }
.category-card:nth-child(8) { animation-delay: 0.8s; }

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

.category-card {
    position: relative;
    background: var(--bg-card);
    padding: 0;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    cursor: pointer;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    opacity: 0;
    transition: var(--transition);
    z-index: 1;
}

.category-card:hover::before {
    opacity: 0.05;
}

.category-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.category-card:hover .category-header h3 {
    color: var(--primary-color);
}

.category-card:hover .product-list li {
    color: var(--text-color);
}

.category-icon {
    position: relative;
    z-index: 2;
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.category-card:hover .category-icon {
    transform: scale(1.1);
    color: var(--primary-dark);
}

.category-icon svg {
    width: 100%;
    height: 100%;
}

.category-card h3 {
    position: relative;
    z-index: 2;
    margin-bottom: 0;
    font-size: 1.3rem;
    color: var(--text-color);
    transition: var(--transition);
}

.category-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
    z-index: 3;
}

.category-card:hover .category-overlay {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
}

/* Category Header */
.category-header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.category-header h3 {
    margin: 0;
    font-size: 1.3rem;
    color: var(--text-color);
    transition: var(--transition);
}

/* Category Content */
.category-content {
    padding: 0 2rem 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.product-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
    flex: 1;
}

.product-list li {
    padding: 0.5rem 0;
    color: var(--text-light);
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.product-list li:last-child {
    border-bottom: none;
}

.product-list li:hover {
    color: var(--primary-color);
    padding-left: 0.5rem;
}

.category-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.product-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.min-order {
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
    background: rgba(255, 122, 0, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
}

/* Catalog Section */
.catalog {
    padding: 100px 0;
}

.filters {
    margin-bottom: 3rem;
    text-align: center;
}

.filter-chips {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-chip {
    padding: 8px 20px;
    background: var(--bg-light);
    color: var(--text-light);
    border: 2px solid transparent;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-chip:hover,
.filter-chip.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    opacity: 1;
    transform: scale(1);
}

.product-card.hidden {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.product-image {
    height: 200px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-placeholder {
    width: 80px;
    height: 80px;
    color: var(--primary-color);
    opacity: 0.5;
    transition: var(--transition);
}

.product-card:hover .image-placeholder {
    transform: scale(1.1);
    opacity: 0.8;
}

.image-placeholder svg {
    width: 100%;
    height: 100%;
}

.product-info {
    padding: 2rem;
}

.product-info h3 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1.3rem;
}

.product-specs {
    margin-bottom: 2rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: 500;
    color: var(--text-light);
    font-size: 0.9rem;
}

.spec-value {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.product-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.product-actions .btn {
    flex: 1;
    min-width: 140px;
    font-size: 14px;
    padding: 10px 16px;
}

/* Delivery Section */
.delivery {
    background: var(--bg-light);
    padding: 100px 0;
}

.delivery-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-item h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-item p {
    color: var(--text-light);
    margin: 0;
}

/* Timeline */
.delivery-timeline {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
}

.delivery-timeline h3 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border-color);
    z-index: 1;
}

.timeline-step {
    text-align: center;
    position: relative;
    z-index: 2;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.timeline-step:hover .timeline-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-heavy);
}

.timeline-icon svg {
    width: 24px;
    height: 24px;
}

.timeline-step h4 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.timeline-step p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

/* Partners Section */
.partners {
    padding: 100px 0;
}

.partners-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.partner-logo {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    aspect-ratio: 3/2;
}

.partner-logo:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.logo-placeholder {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-light);
    text-align: center;
}

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

.partners-info p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Contacts Section */
.contacts {
    background: var(--bg-light);
    padding: 100px 0;
}

.contacts-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.contact-icon {
    width: 50px;
    height: 50px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-details h3 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 1.2rem;
}

.contact-details a {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 1.1rem;
}

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

.messenger-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.messenger-buttons .btn {
    padding: 8px 16px;
    font-size: 14px;
}

/* Contact Form */
.contact-form {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
}

.contact-form h3 {
    margin-bottom: 2rem;
    color: var(--text-color);
    text-align: center;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form input,
.form textarea {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-color);
}

.form input:focus,
.form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.1);
}

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

/* Footer */
.footer {
    background: var(--text-color);
    color: white;
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 2rem;
}

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

.footer-logo-img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1) drop-shadow(0 2px 8px rgba(255, 255, 255, 0.3));
    transition: var(--transition);
}

.footer-logo-img:hover {
    filter: brightness(0) invert(1) drop-shadow(0 4px 12px rgba(255, 255, 255, 0.5));
    transform: scale(1.05);
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

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

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

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

.footer-inn {
    font-size: 0.9rem;
    margin-top: 0.5rem !important;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        min-width: 200px;
    }
    
    .contacts-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .timeline::before {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .header-content {
        padding: 0.8rem 0;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .cta-btn {
        display: none;
    }
    
    .hero {
        padding: 100px 0 60px;
        min-height: 80vh;
    }
    
    .hero-logo-img {
        height: 70px;
    }
    
    
    .footer-logo-img {
        height: 40px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        gap: 0.8rem;
    }
    
    .hero-buttons .btn {
        padding: 12px 20px;
        font-size: 14px;
        min-width: 160px;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .category-header {
        padding: 1.5rem 1.5rem 1rem;
    }
    
    .category-content {
        padding: 0 1.5rem 1.5rem;
    }
    
    .catalog-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .product-actions .btn {
        min-width: auto;
    }
    
    .delivery-features {
        grid-template-columns: 1fr;
    }
    
    .delivery-timeline {
        padding: 2rem;
    }
    
    .timeline {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .partner-logo {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .messenger-buttons {
        flex-direction: column;
    }
    
    .messenger-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-buttons .btn {
        min-width: 140px;
        font-size: 13px;
    }
    
    .category-card {
        padding: 1.5rem 1rem;
    }
    
    .product-info {
        padding: 1.5rem;
    }
    
    .feature-item {
        padding: 1.5rem;
    }
    
    .delivery-timeline {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

.scale-in {
    animation: scaleIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Print Styles */
@media print {
    .header,
    .back-to-top,
    .preloader {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    section {
        padding: 1rem 0;
        page-break-inside: avoid;
    }
}