/* ========================================
   CENTRAL UNIVERSITY BRAND COLORS
   ======================================== */

:root {
    /* Фирменная палитра ЦУ */
    --cu-dark: #141414;
    --cu-light: #FAFAFA;
    --cu-light-gray: #E6E6E6;
    --cu-white: #FFFFFF;
    --cu-secondary: #969696;
    
    /* Яркие акценты */
    --cu-blue: #3044FF;
    --cu-green: #009B40;
    --cu-pink: #DB44E8;
    --cu-orange: #E63F07;
    --cu-yellow: #FFDD2D;
    
    /* Применение цветов */
    --bg-primary: var(--cu-dark);
    --bg-secondary: #1a1a1a;
    --bg-card: #1f1f1f;
    --bg-card-hover: #242424;
    
    --text-primary: var(--cu-light);
    --text-secondary: var(--cu-secondary);
    --text-muted: #707070;
    
    --accent-primary: var(--cu-blue);
    --accent-secondary: var(--cu-green);
    --accent-tertiary: var(--cu-pink);
    
    --border: rgba(250, 250, 250, 0.08);
    --border-strong: rgba(250, 250, 250, 0.12);
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Consolas', monospace;
    
    /* Spacing */
    --section-spacing: 7rem;
    --card-spacing: 1.5rem;
}

/* ========================================
   GLOBAL RESET
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(20, 20, 20, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    text-transform: uppercase;
    position: relative;
    padding-left: 0.75rem;
}

.logo::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--cu-blue);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--cu-blue);
    transition: width 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    width: 100%;
}

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

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(48, 68, 255, 0.05) 100%);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border-strong);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 400;
    line-height: 1.7;
    max-width: 650px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.cta-button.primary {
    background: var(--cu-blue);
    color: var(--cu-white);
    border-color: var(--cu-blue);
}

.cta-button.primary:hover {
    background: #2035dd;
    border-color: #2035dd;
    transform: translateY(-2px);
}

.cta-button.secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.cta-button.secondary:hover {
    background: var(--bg-card);
    border-color: var(--text-primary);
}

.hero-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, transparent 20%, black 100%);
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, transparent 20%, black 100%);
}

/* ========================================
   SECTION STYLES
   ======================================== */

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

.section-header {
    max-width: 900px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--cu-blue);
}

.section-intro {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-top: 1.5rem;
}

.about-section {
    background: var(--bg-secondary);
}

/* ========================================
   ABOUT SECTION
   ======================================== */

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--card-spacing);
    margin-bottom: 5rem;
}

.about-card {
    background: var(--bg-card);
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--cu-blue);
    transition: height 0.3s ease;
}

.about-card:hover {
    transform: translateX(8px);
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
}

.about-card:hover::before {
    height: 100%;
}

.card-number {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--cu-blue);
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--card-spacing);
}

.stat-item {
    padding: 2.5rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    position: relative;
    clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
    transition: all 0.3s ease;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 3px;
    background: var(--cu-blue);
    transition: width 0.3s ease;
}

.stat-item:hover::after {
    width: 100%;
}

.stat-item:nth-child(2)::after {
    background: var(--cu-green);
}

.stat-item:nth-child(3)::after {
    background: var(--cu-pink);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.75rem;
    letter-spacing: -0.03em;
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   WHY US SECTION
   ======================================== */

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

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 3px;
    height: 0;
    background: var(--cu-blue);
    transition: height 0.3s ease;
}

.feature-card:nth-child(2)::after {
    background: var(--cu-green);
}

.feature-card:nth-child(3)::after {
    background: var(--cu-pink);
}

.feature-card:nth-child(4)::after {
    background: var(--cu-orange);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
    background: var(--bg-card-hover);
}

.feature-card:hover::after {
    height: 100%;
}

.feature-icon {
    width: 56px;
    height: 56px;
    padding: 14px;
    background: transparent;
    border: 2px solid var(--border-strong);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--cu-blue);
}

.feature-card:nth-child(2) .feature-icon svg {
    stroke: var(--cu-green);
}

.feature-card:nth-child(3) .feature-icon svg {
    stroke: var(--cu-pink);
}

.feature-card:nth-child(4) .feature-icon svg {
    stroke: var(--cu-orange);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9375rem;
}

/* ========================================
   JOIN SECTION
   ======================================== */

.join-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
}

.join-info h3,
.join-steps h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.schedule-item {
    background: var(--bg-card);
    padding: 1.5rem;
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
    position: relative;
}

.schedule-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--cu-blue);
    transition: width 0.3s ease;
}

.schedule-item:hover {
    border-color: var(--border-strong);
    background: var(--bg-card-hover);
}

.schedule-item:hover::before {
    width: 100%;
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.schedule-day {
    font-weight: 700;
    color: var(--cu-blue);
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.schedule-time {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.schedule-location {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 0.75rem;
}

.schedule-description {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.7;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.join-note {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.join-note p {
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

.join-note ul {
    list-style: none;
    padding: 0;
}

.join-note li {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.join-note li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--cu-blue);
}

/* Timeline */
.timeline {
    position: relative;
}

.timeline-item {
    position: relative;
    padding-left: 2.5rem;
    padding-bottom: 2.5rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 1.5rem;
    bottom: -0.5rem;
    width: 2px;
    background: var(--border);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 16px;
    height: 16px;
    background: var(--cu-blue);
    clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}

.timeline-item:nth-child(2) .timeline-marker {
    background: var(--cu-green);
}

.timeline-item:nth-child(3) .timeline-marker {
    background: var(--cu-pink);
}

.timeline-time {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--cu-blue);
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.timeline-item:nth-child(2) .timeline-time {
    color: var(--cu-green);
}

.timeline-item:nth-child(3) .timeline-time {
    color: var(--cu-pink);
}

.timeline-content h4 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.join-cta {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.join-cta p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ========================================
   CONTACTS SECTION
   ======================================== */

.contacts-section {
    background: var(--bg-secondary);
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--card-spacing);
    margin-bottom: 4rem;
}

.contact-card {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
    clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
    position: relative;
}

.contact-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--cu-blue);
    transition: width 0.3s ease;
}

.contact-card:nth-child(2)::after {
    background: var(--cu-green);
}

.contact-card:nth-child(3)::after {
    background: var(--cu-pink);
}

.contact-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
}

.contact-card:hover::after {
    width: 100%;
}

.contact-icon {
    width: 64px;
    height: 64px;
    padding: 16px;
    background: transparent;
    border: 2px solid var(--border-strong);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.contact-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--cu-blue);
}

.contact-card:nth-child(2) .contact-icon svg {
    stroke: var(--cu-green);
}

.contact-card:nth-child(3) .contact-icon svg {
    stroke: var(--cu-pink);
}

.contact-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-card a {
    color: var(--cu-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.2s ease;
}

.contact-card:nth-child(2) a {
    color: var(--cu-green);
}

.contact-card:nth-child(3) a {
    color: var(--cu-pink);
}

.contact-card a:hover {
    color: var(--text-primary);
}

.contact-note {
    margin-top: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.location-info {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
}

.location-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: center;
    letter-spacing: -0.01em;
}

.location-details p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.location-details strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--bg-secondary);
    padding: 4rem 0 2rem;
    border-top: 2px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    position: relative;
    padding-left: 1rem;
}

.footer-logo::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--cu-blue);
}

.footer-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    max-width: 450px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-column h4 {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

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

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

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

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

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
}

/* ========================================
   ANIMATIONS
   ======================================== */

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    animation: fadeIn 0.8s ease 0.15s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    animation: fadeIn 0.8s ease 0.3s forwards;
}

.fade-in-delay-3 {
    opacity: 0;
    animation: fadeIn 0.8s ease 0.45s forwards;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(30px);
}

.slide-in-up {
    opacity: 0;
    transform: translateY(30px);
}

.slide-in-left.visible,
.slide-in-right.visible,
.slide-in-up.visible {
    opacity: 1;
    transform: translate(0);
    transition: all 0.8s ease;
}

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

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 900px) {
    :root {
        --section-spacing: 5rem;
    }

    .join-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-spacing: 4rem;
    }

    .mobile-menu-btn {
        display: flex;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 5rem 2rem;
        gap: 2rem;
        transition: right 0.3s ease;
        border-left: 2px solid var(--border);
        align-items: flex-start;
    }

    .nav-menu.active {
        right: 0;
    }

    .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-buttons {
        flex-direction: column;
    }

    .cta-button {
        width: 100%;
        text-align: center;
    }

    .about-content,
    .features-grid,
    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .about-card,
    .feature-card {
        padding: 1.5rem;
    }

    .location-info {
        padding: 2rem 1.5rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}