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

:root {
    --primary-gradient: linear-gradient(135deg, #2b66c0 0%, #083a83 100%);
    --primary-color: #2b66c0;
    --secondary-color: #083a83;
    --accent-color: #4a8dd8;
    --bg-color: #0a1628;
    --card-bg: rgba(43, 102, 192, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #a8c5e8;
    --border-color: rgba(43, 102, 192, 0.2);
    --hover-scale: 1.05;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* =================================================
   ФОНОВАЯ АНИМАЦИЯ: ЧАСТИЦЫ (Particles)
   
   Эффект: 3 слоя плавающих частиц с разными размерами
   - Слой 1 (body::before): Большие частицы 6px с свечением и мерцанием
   - Слой 2 (body::after): Средние частицы 3px
   - Слой 3 (container::before): Маленькие частицы 2px (фон)
   
   Чтобы изменить фон, смотрите BACKGROUND-GUIDE.md
   ================================================= */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Частицы - слой 1 (большие, светящиеся) */
body::before {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(43, 102, 192, 0.9);
    box-shadow: 
        /* Сетка 4x4 для покрытия всего экрана */
        50px 100px 0 2px rgba(43, 102, 192, 0.7),
        50px 100px 0 8px rgba(43, 102, 192, 0.15),
        200px 300px 0 1px rgba(74, 141, 216, 0.6),
        200px 300px 0 6px rgba(74, 141, 216, 0.1),
        350px 500px 0 3px rgba(43, 102, 192, 0.8),
        350px 500px 0 10px rgba(43, 102, 192, 0.2),
        500px 200px 0 2px rgba(74, 141, 216, 0.5),
        650px 400px 0 1px rgba(43, 102, 192, 0.7),
        650px 400px 0 7px rgba(43, 102, 192, 0.15),
        800px 600px 0 2px rgba(74, 141, 216, 0.6),
        950px 100px 0 3px rgba(43, 102, 192, 0.6),
        950px 100px 0 9px rgba(43, 102, 192, 0.2),
        1100px 350px 0 1px rgba(74, 141, 216, 0.8),
        1250px 550px 0 2px rgba(43, 102, 192, 0.5),
        1400px 200px 0 1px rgba(74, 141, 216, 0.7),
        1550px 450px 0 3px rgba(43, 102, 192, 0.6),
        1700px 150px 0 2px rgba(74, 141, 216, 0.7),
        1700px 150px 0 8px rgba(74, 141, 216, 0.15),
        1850px 400px 0 1px rgba(43, 102, 192, 0.8),
        2000px 650px 0 2px rgba(74, 141, 216, 0.5),
        2150px 250px 0 3px rgba(43, 102, 192, 0.7),
        2150px 250px 0 10px rgba(43, 102, 192, 0.2),
        2300px 500px 0 1px rgba(74, 141, 216, 0.6),
        /* Дополнительные частицы для больших экранов */
        100px 700px 0 2px rgba(43, 102, 192, 0.6),
        300px 800px 0 1px rgba(74, 141, 216, 0.5),
        500px 900px 0 3px rgba(43, 102, 192, 0.7),
        700px 1000px 0 2px rgba(74, 141, 216, 0.4),
        900px 1100px 0 1px rgba(43, 102, 192, 0.8),
        1100px 1200px 0 2px rgba(74, 141, 216, 0.6),
        1300px 1300px 0 3px rgba(43, 102, 192, 0.5),
        1500px 1400px 0 1px rgba(74, 141, 216, 0.7),
        1700px 1500px 0 2px rgba(43, 102, 192, 0.6),
        1900px 1600px 0 1px rgba(74, 141, 216, 0.5),
        2100px 1700px 0 3px rgba(43, 102, 192, 0.8),
        2300px 1800px 0 2px rgba(74, 141, 216, 0.4);
    filter: blur(0.3px);
    animation: particleFloat1 40s linear infinite, twinkle 3s ease-in-out infinite;
}

/* Частицы - слой 2 (средние) */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: rgba(74, 141, 216, 0.6);
    box-shadow: 
        /* Распределяем по всему экрану */
        80px 150px 0 1px rgba(74, 141, 216, 0.5),
        250px 400px 0 0px rgba(43, 102, 192, 0.4),
        420px 650px 0 1px rgba(74, 141, 216, 0.6),
        590px 900px 0 0px rgba(43, 102, 192, 0.7),
        760px 1150px 0 1px rgba(74, 141, 216, 0.4),
        930px 1400px 0 0px rgba(43, 102, 192, 0.5),
        1100px 1650px 0 1px rgba(74, 141, 216, 0.7),
        1270px 1900px 0 0px rgba(43, 102, 192, 0.6),
        1440px 2150px 0 1px rgba(74, 141, 216, 0.5),
        1610px 2400px 0 0px rgba(43, 102, 192, 0.4),
        1780px 2650px 0 1px rgba(74, 141, 216, 0.6),
        1950px 2900px 0 0px rgba(43, 102, 192, 0.7),
        2120px 3150px 0 1px rgba(74, 141, 216, 0.5),
        2290px 3400px 0 0px rgba(43, 102, 192, 0.6),
        2460px 3650px 0 1px rgba(74, 141, 216, 0.4),
        2630px 3900px 0 0px rgba(43, 102, 192, 0.5),
        2800px 4150px 0 1px rgba(74, 141, 216, 0.7),
        2970px 4400px 0 0px rgba(43, 102, 192, 0.4),
        3140px 4650px 0 1px rgba(74, 141, 216, 0.6),
        3310px 4900px 0 0px rgba(43, 102, 192, 0.5),
        3480px 5150px 0 1px rgba(74, 141, 216, 0.4),
        3650px 5400px 0 0px rgba(43, 102, 192, 0.7),
        3820px 5650px 0 1px rgba(74, 141, 216, 0.6),
        3990px 5900px 0 0px rgba(43, 102, 192, 0.5),
        4160px 6150px 0 1px rgba(74, 141, 216, 0.4),
        4330px 6400px 0 0px rgba(43, 102, 192, 0.6),
        4500px 6650px 0 1px rgba(74, 141, 216, 0.7),
        4670px 6900px 0 0px rgba(43, 102, 192, 0.5),
        4840px 7150px 0 1px rgba(74, 141, 216, 0.4),
        5010px 7400px 0 0px rgba(43, 102, 192, 0.6);
    pointer-events: none;
    z-index: 0;
    animation: particleFloat2 50s linear infinite reverse;
}

/* Анимации для частиц */
@keyframes particleFloat1 {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 1;
    }
    25% {
        transform: translateY(-120px) translateX(100px);
        opacity: 0.8;
    }
    50% {
        transform: translateY(80px) translateX(-50px);
        opacity: 0.6;
    }
    75% {
        transform: translateY(-60px) translateX(120px);
        opacity: 0.9;
    }
}

@keyframes particleFloat2 {
    0%, 100% {
        transform: translateY(0) translateX(0) scale(1);
        opacity: 1;
    }
    20% {
        transform: translateY(100px) translateX(-80px) scale(1.2);
        opacity: 0.7;
    }
    40% {
        transform: translateY(-50px) translateX(60px) scale(0.8);
        opacity: 0.9;
    }
    60% {
        transform: translateY(70px) translateX(-100px) scale(1.1);
        opacity: 0.6;
    }
    80% {
        transform: translateY(-90px) translateX(40px) scale(0.9);
        opacity: 0.8;
    }
}

/* Частицы - слой 3 (маленькие, фоновые) */
.container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    background: rgba(43, 102, 192, 0.3);
    box-shadow: 
        /* Покрываем весь экран маленькими частицами */
        40px 80px 0 0px rgba(74, 141, 216, 0.3),
        120px 200px 0 0px rgba(43, 102, 192, 0.2),
        200px 320px 0 0px rgba(74, 141, 216, 0.4),
        280px 440px 0 0px rgba(43, 102, 192, 0.3),
        360px 560px 0 0px rgba(74, 141, 216, 0.2),
        440px 680px 0 0px rgba(43, 102, 192, 0.4),
        520px 800px 0 0px rgba(74, 141, 216, 0.3),
        600px 920px 0 0px rgba(43, 102, 192, 0.2),
        680px 1040px 0 0px rgba(74, 141, 216, 0.4),
        760px 1160px 0 0px rgba(43, 102, 192, 0.3),
        840px 1280px 0 0px rgba(74, 141, 216, 0.2),
        920px 1400px 0 0px rgba(43, 102, 192, 0.4),
        1000px 1520px 0 0px rgba(74, 141, 216, 0.3),
        1080px 1640px 0 0px rgba(43, 102, 192, 0.2),
        1160px 1760px 0 0px rgba(74, 141, 216, 0.4),
        1240px 1880px 0 0px rgba(43, 102, 192, 0.3),
        1320px 2000px 0 0px rgba(74, 141, 216, 0.2),
        1400px 2120px 0 0px rgba(43, 102, 192, 0.4),
        1480px 2240px 0 0px rgba(74, 141, 216, 0.3),
        1560px 2360px 0 0px rgba(43, 102, 192, 0.2),
        1640px 2480px 0 0px rgba(74, 141, 216, 0.4),
        1720px 2600px 0 0px rgba(43, 102, 192, 0.3),
        1800px 2720px 0 0px rgba(74, 141, 216, 0.2),
        1880px 2840px 0 0px rgba(43, 102, 192, 0.4),
        1960px 2960px 0 0px rgba(74, 141, 216, 0.3),
        2040px 3080px 0 0px rgba(43, 102, 192, 0.2),
        2120px 3200px 0 0px rgba(74, 141, 216, 0.4),
        2200px 3320px 0 0px rgba(43, 102, 192, 0.3),
        2280px 3440px 0 0px rgba(74, 141, 216, 0.2),
        2360px 3560px 0 0px rgba(43, 102, 192, 0.4),
        2440px 3680px 0 0px rgba(74, 141, 216, 0.3),
        2520px 3800px 0 0px rgba(43, 102, 192, 0.2),
        2600px 3920px 0 0px rgba(74, 141, 216, 0.4),
        2680px 4040px 0 0px rgba(43, 102, 192, 0.3),
        2760px 4160px 0 0px rgba(74, 141, 216, 0.2),
        2840px 4280px 0 0px rgba(43, 102, 192, 0.4),
        2920px 4400px 0 0px rgba(74, 141, 216, 0.3),
        3000px 4520px 0 0px rgba(43, 102, 192, 0.2),
        3080px 4640px 0 0px rgba(74, 141, 216, 0.4),
        3160px 4760px 0 0px rgba(43, 102, 192, 0.3),
        3240px 4880px 0 0px rgba(74, 141, 216, 0.2),
        3320px 5000px 0 0px rgba(43, 102, 192, 0.4),
        3400px 5120px 0 0px rgba(74, 141, 216, 0.3),
        3480px 5240px 0 0px rgba(43, 102, 192, 0.2),
        3560px 5360px 0 0px rgba(74, 141, 216, 0.4),
        3640px 5480px 0 0px rgba(43, 102, 192, 0.3),
        3720px 5600px 0 0px rgba(74, 141, 216, 0.2),
        3800px 5720px 0 0px rgba(43, 102, 192, 0.4),
        3880px 5840px 0 0px rgba(74, 141, 216, 0.3),
        3960px 5960px 0 0px rgba(43, 102, 192, 0.2),
        4040px 6080px 0 0px rgba(74, 141, 216, 0.4),
        4120px 6200px 0 0px rgba(43, 102, 192, 0.3),
        4200px 6320px 0 0px rgba(74, 141, 216, 0.2),
        4280px 6440px 0 0px rgba(43, 102, 192, 0.4),
        4360px 6560px 0 0px rgba(74, 141, 216, 0.3),
        4440px 6680px 0 0px rgba(43, 102, 192, 0.2),
        4520px 6800px 0 0px rgba(74, 141, 216, 0.4),
        4600px 6920px 0 0px rgba(43, 102, 192, 0.3),
        4680px 7040px 0 0px rgba(74, 141, 216, 0.2),
        4760px 7160px 0 0px rgba(43, 102, 192, 0.4),
        4840px 7280px 0 0px rgba(74, 141, 216, 0.3),
        4920px 7400px 0 0px rgba(43, 102, 192, 0.2),
        5000px 7520px 0 0px rgba(74, 141, 216, 0.4);
    pointer-events: none;
    z-index: 0;
    animation: particleFloat3 60s linear infinite;
}

@keyframes particleFloat3 {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0.4;
    }
    33% {
        transform: translateY(-80px) translateX(60px);
        opacity: 0.6;
    }
    66% {
        transform: translateY(60px) translateX(-40px);
        opacity: 0.3;
    }
}

/* Эффект мерцания */
@keyframes twinkle {
    0%, 100% {
        filter: blur(0.3px) brightness(1);
    }
    50% {
        filter: blur(0.5px) brightness(1.3);
    }
}

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 60px 20px;
    position: relative;
    z-index: 1;
}

.content {
    animation: fadeInUp 0.8s ease;
}

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

/* Header */
.header {
    text-align: center;
    margin-bottom: 60px;
}

.logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    animation: logoFloat 3s ease-in-out infinite;
}

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

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 10px 40px rgba(43, 102, 192, 0.6)) 
            drop-shadow(0 0 20px rgba(74, 141, 216, 0.4));
}

h1 {
    font-size: 48px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    letter-spacing: -1px;
    filter: drop-shadow(0 0 20px rgba(43, 102, 192, 0.3));
}

.subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Section */
.section {
    margin-bottom: 48px;
}

.section h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    text-align: center;
    text-shadow: 0 0 30px rgba(43, 102, 192, 0.3);
}

/* Links Grid - App Downloads */
.links-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.link-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.link-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(43, 102, 192, 0.4),
                0 0 30px rgba(74, 141, 216, 0.2);
}

.link-card:hover::before {
    opacity: 0.1;
}

.link-card .icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(43, 102, 192, 0.2);
    border-radius: 12px;
    flex-shrink: 0;
    transition: var(--transition);
}

.link-card:hover .icon {
    background: rgba(74, 141, 216, 0.3);
    box-shadow: 0 0 20px rgba(43, 102, 192, 0.3);
}

.link-card .icon svg {
    width: 28px;
    height: 28px;
}

.link-card .text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.link-card .text .small {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 400;
}

.link-card .text .large {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Специальный стиль для веб-версии - занимает 2 колонки на ПК */
.link-card.web-version {
    grid-column: 1 / -1;
    justify-content: center;
    text-align: center;
    flex-direction: row;
    gap: 20px;
    height: auto;
    min-height: 80px;
    align-items: center;
}

.link-card.web-version .icon {
    width: 48px;
    height: 48px;
    margin: 0;
}

.link-card.web-version .text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

/* Social Grid */
.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
}

.social-link {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.social-link:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(43, 102, 192, 0.5);
    box-shadow: 0 10px 30px rgba(43, 102, 192, 0.2);
}

.social-link svg {
    width: 32px;
    height: 32px;
    transition: var(--transition);
}

.social-link:hover svg {
    transform: scale(1.1);
}

.social-link span {
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

/* Social colors */
.social-link.telegram::before {
    background: #0088cc;
}

.social-link.telegram:hover {
    box-shadow: 0 10px 30px rgba(0, 136, 204, 0.4);
}

.social-link.telegram:hover::before {
    opacity: 0.15;
}

.social-link.vk::before {
    background: #0077FF;
}

.social-link.vk:hover {
    box-shadow: 0 10px 30px rgba(0, 119, 255, 0.4);
}

.social-link.vk:hover::before {
    opacity: 0.15;
}

.social-link.youtube::before {
    background: #FF0000;
}

.social-link.youtube:hover {
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
}

.social-link.youtube:hover::before {
    opacity: 0.15;
}

.social-link.instagram::before {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.social-link.instagram:hover {
    box-shadow: 0 10px 30px rgba(225, 48, 108, 0.4);
}

.social-link.instagram:hover::before {
    opacity: 0.15;
}

.social-link.ok::before {
    background: #EE8208;
}

.social-link.ok:hover {
    box-shadow: 0 10px 30px rgba(238, 130, 8, 0.4);
}

.social-link.ok:hover::before {
    opacity: 0.15;
}

.social-link.website::before {
    background: var(--primary-gradient);
}

.social-link.website:hover {
    box-shadow: 0 10px 30px rgba(43, 102, 192, 0.5);
}

.social-link.website:hover::before {
    opacity: 0.15;
}

.social-link.rutube::before {
    background: var(--primary-gradient);
}

.social-link.rutube {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.social-link.rutube:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 30px rgba(43, 102, 192, 0.4);
    border-color: var(--primary-color);
}

.social-link.rutube:hover::before {
    opacity: 0.15;
}

/* Additional Links */
.additional-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 32px;
}

.text-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(43, 102, 192, 0.05);
    border: 1px solid rgba(43, 102, 192, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.text-link svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

.text-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
    border-radius: 1px;
}

.text-link:hover {
    color: var(--text-primary);
    background: rgba(43, 102, 192, 0.1);
    border-color: rgba(43, 102, 192, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(43, 102, 192, 0.2);
}

.text-link:hover svg {
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px rgba(43, 102, 192, 0.6));
}

.text-link:hover::after {
    width: 80%;
    box-shadow: 0 0 8px rgba(43, 102, 192, 0.6);
}

/* Специальные стили для email ссылки */
.contact-link:hover {
    background: linear-gradient(135deg, rgba(43, 102, 192, 0.15), rgba(74, 141, 216, 0.1));
    box-shadow: 0 8px 25px rgba(43, 102, 192, 0.3);
}

/* Специальные стили для документов */
.document-link:hover {
    background: linear-gradient(135deg, rgba(43, 102, 192, 0.12), rgba(8, 58, 131, 0.08));
    box-shadow: 0 8px 25px rgba(8, 58, 131, 0.25);
}

/* О компании */
.about-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.about-text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.feature-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.feature-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 35px rgba(43, 102, 192, 0.2);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 12px;
    display: block;
}

.feature-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Footer */
footer {
    margin-top: 60px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: var(--primary-gradient);
    box-shadow: 0 0 20px rgba(43, 102, 192, 0.6);
}

footer p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 640px) {
    .container {
        padding: 40px 16px;
    }

    h1 {
        font-size: 36px;
    }

    .subtitle {
        font-size: 16px;
    }

    .logo {
        width: 80px;
        height: 80px;
    }

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

    .social-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }

    .social-link {
        padding: 16px 12px;
    }

    .social-link svg {
        width: 28px;
        height: 28px;
    }

    .social-link span {
        font-size: 13px;
    }

    .link-card .text .large {
        font-size: 16px;
    }

    /* На мобильных веб-версия занимает всю ширину */
    .link-card.web-version {
        grid-column: 1 / -1;
    }

    .additional-links {
        flex-direction: column;
        gap: 12px;
    }
    
    .text-link {
        padding: 10px 14px;
        font-size: 13px;
        justify-content: center;
        text-align: center;
    }
    
    .text-link svg {
        width: 14px;
        height: 14px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .feature-item {
        padding: 20px 16px;
    }
    
    .feature-icon {
        font-size: 28px;
    }
    
    .about-text {
        font-size: 15px;
        margin-bottom: 32px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 32px;
    }

    .section h2 {
        font-size: 18px;
    }

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

/* Animations for staggered entrance */
.link-card,
.social-link {
    animation: fadeInScale 0.6s ease backwards;
}

.link-card:nth-child(1) { animation-delay: 0.1s; }
.link-card:nth-child(2) { animation-delay: 0.2s; }
.link-card:nth-child(3) { animation-delay: 0.3s; }
.link-card:nth-child(4) { animation-delay: 0.4s; }
.link-card:nth-child(5) { animation-delay: 0.5s; }

.social-link:nth-child(1) { animation-delay: 0.1s; }
.social-link:nth-child(2) { animation-delay: 0.15s; }
.social-link:nth-child(3) { animation-delay: 0.2s; }
.social-link:nth-child(4) { animation-delay: 0.25s; }
.social-link:nth-child(5) { animation-delay: 0.3s; }
.social-link:nth-child(6) { animation-delay: 0.35s; }
.social-link:nth-child(7) { animation-delay: 0.4s; }

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

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background: rgba(43, 102, 192, 0.4);
    color: var(--text-primary);
}