/* Шрифты в стиле Google (Roboto/Inter) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Цветовая палитра Google Tech */
    --c-blue: #1a73e8;
    --c-blue-hover: #174ea6;
    --c-blue-light: #e8f0fe;
    --c-text-dark: #202124;
    --c-text-gray: #5f6368;
    --c-bg-white: #ffffff;
    --c-bg-gray: #f8f9fa;
    --c-border: #dadce0;
    
    /* Плавающие тени (эффект невесомости) */
    --shadow-float: 0 12px 24px rgba(32, 33, 36, 0.08);
    --shadow-float-hover: 0 24px 48px rgba(26, 115, 232, 0.15);
    --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.05);
    
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
    --radius-full: 9999px;
    
    --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul { margin: 0; padding: 0; list-style: none; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--c-bg-white);
    color: var(--c-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* Контейнер */
.container {
    width: 100%; max-width: 1200px;
    margin: 0 auto; padding: 0 24px;
    position: relative; z-index: 10;
}

/* --- ИНТЕРАКТИВНЫЙ ФОН "АНТИГРАВИТАЦИЯ" --- */
.canvas-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1; pointer-events: none; overflow: hidden;
}
.particle {
    position: absolute;
    background-color: var(--c-blue);
    border-radius: 50%;
    will-change: transform;
    box-shadow: 0 0 6px rgba(26, 115, 232, 0.4);
}

/* НАВИГАЦИЯ */
.header {
    position: fixed; top: 0; left: 0; width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(218, 220, 224, 0.5);
    z-index: 100; transition: var(--transition);
}
.header.scrolled { box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.header .container {
    display: flex; justify-content: space-between; align-items: center; height: 72px;
}
.logo { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 22px; letter-spacing: -0.5px; }
.logo-mark {
    width: 36px; height: 36px; background: var(--c-blue); color: #fff;
    border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 700; box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}
.nav-links { display: flex; gap: 32px; }
.nav-links a {
    font-size: 14px; font-weight: 500; color: var(--c-text-gray);
    transition: var(--transition); position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--c-blue); transition: var(--transition);
}
.nav-links a:hover { color: var(--c-blue); }
.nav-links a:hover::after { width: 100%; }

.header-phone { font-weight: 600; color: var(--c-blue); padding: 8px 20px; background: var(--c-blue-light); border-radius: var(--radius-full); transition: var(--transition); }
.header-phone:hover { background: var(--c-blue); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-float); }

@media (max-width: 992px) { .nav-links { display: none; } }

/* КНОПКИ */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 16px 32px; font-size: 15px; font-weight: 600;
    border-radius: var(--radius-full); transition: var(--transition);
    letter-spacing: 0.3px;
}
.btn-primary {
    background-color: var(--c-blue); color: #fff;
    box-shadow: 0 4px 14px rgba(26, 115, 232, 0.4);
}
.btn-primary:hover {
    background-color: var(--c-blue-hover);
    transform: translateY(-4px); box-shadow: 0 8px 24px rgba(26, 115, 232, 0.3);
}
.btn-secondary {
    background-color: #fff; color: var(--c-text-dark);
    border: 1px solid var(--c-border);
}
.btn-secondary:hover {
    border-color: var(--c-text-dark); transform: translateY(-4px);
    box-shadow: var(--shadow-float);
}

/* ОБЩИЕ СЕКЦИИ */
.section { padding: 140px 0; position: relative; z-index: 10; overflow: hidden; }
.section-light { background-color: var(--c-bg-white); }
.section-gray { background-color: var(--c-bg-gray); }

.title-badge {
    display: inline-block; padding: 6px 16px; background: var(--c-blue-light);
    color: var(--c-blue); font-size: 12px; font-weight: 700; border-radius: var(--radius-full);
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 24px;
}
.section-title { font-size: 36px; font-weight: 700; margin-bottom: 24px; letter-spacing: -1px; line-height: 1.2; }
.section-desc { font-size: 18px; color: var(--c-text-gray); max-width: 600px; margin-bottom: 56px; }

/* HERO СЕКЦИЯ (НЕВЕСОМОСТЬ) */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    padding-top: 80px; text-align: center; position: relative;
}
.hero .container { display: flex; flex-direction: column; align-items: center; z-index: 2; }
.hero-title {
    font-size: 72px; font-weight: 700; letter-spacing: -2.5px;
    line-height: 1.05; margin-bottom: 32px; max-width: 900px;
    color: var(--c-text-dark);
}
.hero-title span { color: var(--c-blue); }
.hero-text {
    font-size: 22px; color: var(--c-text-gray); max-width: 700px;
    margin-bottom: 48px; font-weight: 300;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

@media (max-width: 768px) {
    .hero-title { font-size: 42px; }
    .hero-text { font-size: 18px; }
}

/* КАРТОЧКИ (FLOATING EFFECT) */
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.card-float {
    background: #fff; border: 1px solid var(--c-border);
    border-radius: var(--radius-lg); padding: 48px;
    transition: var(--transition); position: relative;
    z-index: 1; overflow: hidden;
}
.card-float:hover {
    transform: translateY(-10px);
    border-color: transparent;
    box-shadow: var(--shadow-float-hover);
}
.card-icon {
    width: 56px; height: 56px; background: var(--c-blue-light); color: var(--c-blue);
    border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 700; margin-bottom: 24px;
    transition: var(--transition);
}
.card-float:hover .card-icon { background: var(--c-blue); color: #fff; transform: scale(1.1); }
.card-title { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.card-text { font-size: 15px; color: var(--c-text-gray); line-height: 1.6; }

/* О КОМПАНИИ (СТАТИСТИКА) */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; position: relative; z-index: 2; }
.stats-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.stat-item {
    background: #fff; padding: 32px; border-radius: var(--radius-lg);
    border: 1px solid var(--c-border); text-align: center;
    transition: var(--transition); position: relative; z-index: 2;
}
.stat-item:hover { transform: translateY(-8px); box-shadow: var(--shadow-float); border-color: var(--c-blue-light); }
.stat-num { font-size: 48px; font-weight: 700; color: var(--c-blue); line-height: 1; margin-bottom: 8px; letter-spacing: -2px; }
.stat-label { font-size: 13px; color: var(--c-text-gray); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; }

@media (max-width: 992px) { 
    .about-grid { grid-template-columns: 1fr; } 
    .demo-catalog { column-count: 2 !important; }
}
@media (max-width: 768px) {
    .demo-catalog { column-count: 1 !important; }
}

/* АССОРТИМЕНТ (ДЕМО-КАТАЛОГ В СТИЛЕ MASONRY) */
.demo-catalog {
    column-count: 3;
    column-gap: 24px;
    margin-top: 48px;
}
.demo-card {
    background: #fff; border: 1px solid var(--c-border);
    border-radius: var(--radius-lg); padding: 32px;
    transition: var(--transition);
    break-inside: avoid;
    display: inline-block;
    width: 100%;
    margin-bottom: 24px;
}
.demo-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-float);
    border-color: var(--c-blue-light);
}
.demo-card-header {
    display: flex; align-items: center; gap: 16px;
    margin-bottom: 24px; padding-bottom: 16px;
    border-bottom: 1px solid var(--c-bg-gray);
}
.demo-icon {
    width: 48px; height: 48px; background: var(--c-blue-light);
    color: var(--c-blue); border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700; letter-spacing: 1px;
}
.demo-title { font-size: 18px; font-weight: 700; color: var(--c-text-dark); }
.demo-list { display: flex; flex-direction: column; gap: 10px; }
.demo-item {
    font-size: 14px; color: var(--c-text-gray);
    display: flex; align-items: center; gap: 12px;
    transition: color 0.2s; cursor: default;
}
.demo-item::before {
    content: ''; width: 6px; height: 6px;
    background: var(--c-blue); border-radius: 50%;
    opacity: 0.3; transition: var(--transition); flex-shrink: 0;
}
.demo-item:hover { color: var(--c-blue); }
.demo-item:hover::before { opacity: 1; transform: scale(1.5); }

/* БРЕНДЫ */
.brand-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; }
.brand-pill {
    padding: 24px 48px; background: #fff; border: 1px solid var(--c-border);
    border-radius: var(--radius-full); font-size: 18px; font-weight: 700;
    color: var(--c-text-gray); transition: var(--transition);
}
.brand-pill:hover {
    color: var(--c-text-dark); border-color: var(--c-text-dark);
    transform: translateY(-6px); box-shadow: var(--shadow-float);
}

/* КОНТАКТЫ & CTA */
.contact-box {
    background: var(--c-blue); border-radius: var(--radius-lg);
    padding: 80px; color: #fff; display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
    position: relative; overflow: hidden;
    box-shadow: 0 24px 48px rgba(26, 115, 232, 0.2);
}
.contact-box::before {
    content: ''; position: absolute; top: -50%; right: -10%; width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none;
}
.c-title { font-size: 40px; font-weight: 700; margin-bottom: 24px; letter-spacing: -1px; }
.c-info-item { margin-bottom: 24px; }
.c-label { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: rgba(255,255,255,0.7); margin-bottom: 8px; }
.c-val { font-size: 20px; font-weight: 600; line-height: 1.4; }

.map-frame {
    width: 100%; height: 100%; min-height: 350px; border-radius: var(--radius-md);
    overflow: hidden; background: #fff; padding: 8px; position: relative;
}
.map-frame iframe { border-radius: var(--radius-sm); position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

@media (max-width: 992px) { .contact-box { grid-template-columns: 1fr; padding: 40px; } }

/* ПОДВАЛ */
.footer { padding: 64px 0 32px; border-top: 1px solid var(--c-border); background: var(--c-bg-white); }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.f-col-title { font-size: 14px; font-weight: 700; margin-bottom: 24px; color: var(--c-text-dark); }
.f-text { font-size: 14px; color: var(--c-text-gray); line-height: 1.6; margin-bottom: 12px; }
.f-bottom { border-top: 1px solid var(--c-border); padding-top: 32px; display: flex; justify-content: space-between; font-size: 12px; color: var(--c-text-gray); }

@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; }
    .f-bottom { flex-direction: column; gap: 16px; text-align: center; }
}

/* Стили для появления элементов при скролле (Reveal) */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }