/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --gray-50: #f8f9fa; --gray-100: #f1f3f5; --gray-200: #e9ecef;
    --gray-300: #dee2e6; --gray-400: #ced4da; --gray-500: #adb5bd;
    --gray-600: #868e96; --gray-700: #495057; --gray-800: #343a40;
    --gray-900: #212529; --accent: #5c6bc0; --accent-dark: #3f4d9e;
    --accent-light: #7986cb; --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08); --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12); --shadow-xl: 0 12px 40px rgba(0,0,0,0.15);
    --radius: 12px; --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 1200px;
    --header-height: 72px;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800); background: var(--gray-50);
    line-height: 1.6; overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
}

img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
a { text-decoration: none; color: inherit; }

/* ===== HEADER ===== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.85); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200); transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
    max-width: var(--container-max); margin: 0 auto; padding: 0 20px;
    display: flex; align-items: center; justify-content: space-between;
    height: var(--header-height);
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
    width: 10vh; height: 5vh;
    background: linear-gradient(135deg, var(--gray-800), var(--gray-600));
    border-radius: 10px; display: flex; align-items: center;
    justify-content: center; color: white; font-weight: 800;
    font-size: 16px; letter-spacing: -0.5px; flex-shrink: 0;
}
.logo-text { font-size: clamp(18px, 4vw, 22px); font-weight: 700; letter-spacing: -0.5px; color: var(--gray-900); }
.logo-text span { color: var(--gray-500); font-weight: 400; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
    text-decoration: none; color: var(--gray-600); font-size: 14px;
    font-weight: 500; padding: 8px 14px; border-radius: 8px; transition: var(--transition);
    white-space: nowrap;
}
.nav a:hover { color: var(--gray-900); background: var(--gray-100); }
.nav-cta { background: var(--gray-900) !important; color: var(--white) !important; padding: 10px 20px !important; font-weight: 600 !important; }
.nav-cta:hover { background: var(--gray-800) !important; transform: translateY(-1px); }

.lang-switcher {
    display: flex; align-items: center; gap: 4px; margin-left: 8px;
    background: var(--gray-100); border-radius: 8px; padding: 4px;
    flex-shrink: 0;
}
.lang-btn {
    padding: 5px 12px; border: none; background: transparent;
    border-radius: 6px; font-size: 13px; font-weight: 600;
    color: var(--gray-600); cursor: pointer; transition: var(--transition);
    font-family: inherit; min-width: 40px;
}
.lang-btn.active { background: var(--white); color: var(--gray-900); box-shadow: var(--shadow-sm); }
.lang-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
.mobile-toggle span { width: 24px; height: 2px; background: var(--gray-800); border-radius: 2px; transition: var(--transition); }
.mobile-toggle:focus-visible { outline: 2px solid var(--accent); border-radius: 4px; }

/* ===== SUPPORTERS ===== */
.supporters {
    padding: 80px 20px 50px;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.supporters-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.supporters-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    margin-bottom: 28px;
    flex-wrap: nowrap;
}

.logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px 40px;
    background: var(--white);
    border-radius: 16px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.logo-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    border-color: var(--gray-300);
}

.logo-item img {
    height: 120px;
    width: auto;
    max-width: 350px;
    object-fit: contain;
    transition: var(--transition);
}

.supporters-text {
    text-align: center;
    font-size: 18px;
    color: var(--gray-700);
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto;
    font-weight: 500;
}

/* Планшеты */
@media (max-width: 768px) {
    .supporters {
        padding: 60px 16px 40px;
    }
    
    .supporters-logos {
        gap: 30px;
        margin-bottom: 24px;
    }
    
    .logo-item {
        padding: 20px 30px;
    }
    
    .logo-item img {
        height: 90px;
        max-width: 280px;
    }
    
    .supporters-text {
        font-size: 16px;
    }
}

/* Мобильные */
@media (max-width: 480px) {
    .supporters {
        padding: 50px 16px 32px;
    }
    
    .supporters-logos {
        flex-direction: column;
        gap: 20px;
        margin-bottom: 20px;
    }
    
    .logo-item {
        padding: 20px 25px;
        width: 100%;
        max-width: 320px;
    }
    
    .logo-item img {
        height: 80px;
        max-width: 100%;
    }
    
    .supporters-text {
        font-size: 15px;
        line-height: 1.6;
    }
}

/* Очень маленькие экраны */
@media (max-width: 360px) {
    .logo-item img {
        height: 65px;
    }
    
    .supporters-text {
        font-size: 14px;
    }
}

/* ===== HERO ===== */
.hero {
    min-height: 50vh; display: flex; align-items: center;
    padding: calc(var(--header-height) + 40px) 20px 60px; position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -50%; right: -20%;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(92,107,192,0.06) 0%, transparent 70%);
    border-radius: 50%; pointer-events: none;
}
.hero-inner {
    max-width: var(--container-max); margin: 0 auto; width: 100%;
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.hero-content { animation: fadeInUp 0.8s ease-out; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--gray-100); border: 1px solid var(--gray-200);
    padding: 6px 16px; border-radius: 100px; font-size: 13px;
    font-weight: 500; color: var(--gray-600); margin-bottom: 20px;
}
.hero-badge::before {
    content: ''; width: 8px; height: 8px; background: #4caf50;
    border-radius: 50%; animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.hero h1 {
    font-size: clamp(1.8rem, 5vw, 3.5rem); font-weight: 800;
    line-height: 1.15; letter-spacing: -1px; color: var(--gray-900);
    margin-bottom: 16px; word-wrap: break-word;
}
.hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--gray-600), var(--gray-800)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc { font-size: clamp(15px, 2.5vw, 17px); color: var(--gray-600); line-height: 1.7; margin-bottom: 28px; max-width: 520px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 24px; border-radius: 10px; font-size: 15px;
    font-weight: 600; cursor: pointer; border: none; transition: var(--transition); font-family: inherit;
    min-height: 48px; touch-action: manipulation;
}
.btn-primary { background: var(--gray-900); color: var(--white); box-shadow: var(--shadow-md); }
.btn-primary:hover { background: var(--gray-800); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-secondary { background: var(--white); color: var(--gray-700); border: 1px solid var(--gray-300); }
.btn-secondary:hover { border-color: var(--gray-400); background: var(--gray-50); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.hero-visual { display: flex; justify-content: center; align-items: center; animation: fadeInUp 0.8s ease-out 0.2s both; }
.hero-image-wrapper { position: relative; width: 100%; max-width: 450px; }
.hero-image-wrapper img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); }

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

/* ===== SECTIONS ===== */
.section { padding: clamp(60px, 10vw, 100px) 20px; }
.section-dark { background: var(--gray-900); color: var(--white); }
.section-gray { background: var(--gray-100); }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 40px; }
.section-label { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--gray-500); margin-bottom: 10px; }
.section-dark .section-label { color: var(--gray-400); }
.section-title { font-size: clamp(1.6rem, 4.5vw, 2.8rem); font-weight: 800; letter-spacing: -0.5px; color: var(--gray-900); margin-bottom: 12px; line-height: 1.2; }
.section-dark .section-title { color: var(--white); }
.section-subtitle { font-size: clamp(14px, 2.2vw, 17px); color: var(--gray-500); line-height: 1.7; }
.container { max-width: var(--container-max); margin: 0 auto; width: 100%; }

/* ===== PRODUCTS ===== */
.products-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 900px; margin: 0 auto; }
.product-card {
    background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--gray-200); transition: var(--transition); position: relative;
    display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); border-color: var(--gray-300); }
.product-badge {
    position: absolute; top: 12px; left: 12px;
    background: var(--gray-900); color: var(--white); padding: 4px 10px;
    border-radius: 100px; font-size: 10px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 1px; z-index: 2;
}
.product-image-wrapper { overflow: hidden; position: relative; }
.product-image { width: 100%; height: 220px; object-fit: cover; background: var(--gray-100); transition: var(--transition); }
.product-card:hover .product-image { transform: scale(1.03); }
.product-image-wrapper::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0;
    height: 40px; background: linear-gradient(to top, var(--white), transparent); pointer-events: none;
}
.product-info { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-name { font-size: clamp(16px, 3vw, 20px); font-weight: 700; color: var(--gray-900); margin-bottom: 6px; letter-spacing: -0.3px; }
.product-desc { font-size: 13px; color: var(--gray-500); line-height: 1.6; margin-bottom: 16px; flex: 1; }
.product-features { list-style: none; margin-bottom: 16px; }
.product-features li { font-size: 12px; color: var(--gray-600); padding: 4px 0; display: flex; align-items: center; gap: 6px; }
.product-features li::before { content: '✓'; color: var(--gray-400); font-weight: 700; font-size: 11px; }
.product-price { font-size: clamp(18px, 3vw, 24px); font-weight: 800; color: var(--gray-900); letter-spacing: -0.3px; }
.product-price span { font-size: 12px; font-weight: 500; color: var(--gray-500); }
.product-cta {
    display: block; width: 100%; padding: 12px; margin-top: auto;
    background: var(--gray-100); color: var(--gray-700); border: none;
    border-radius: 8px; font-size: 14px; font-weight: 600;
    cursor: pointer; transition: var(--transition); font-family: inherit;
    min-height: 44px; touch-action: manipulation;
}
.product-cta:hover { background: var(--gray-900); color: var(--white); }
.product-cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== FEATURES ===== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-card {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg); padding: 24px 20px; text-align: center; transition: var(--transition);
}
.feature-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-3px); }
.feature-icon {
    width: 48px; height: 48px; background: rgba(255,255,255,0.1);
    border-radius: 12px; display: flex; align-items: center;
    justify-content: center; margin: 0 auto 16px; font-size: 20px;
}
.feature-card h3 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.feature-card p { font-size: 12px; color: var(--gray-400); line-height: 1.6; }

/* ===== APP SECTION ===== */
.app-section-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.app-subtitle { font-size: clamp(18px, 3vw, 22px); font-weight: 700; color: var(--gray-900); margin-bottom: 10px; line-height: 1.3; }
.app-description { font-size: 15px; color: var(--gray-500); line-height: 1.7; margin-bottom: 24px; }
.app-features-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.app-feature-item {
    background: var(--gray-100); border-radius: var(--radius);
    padding: 16px; display: flex; flex-direction: column; gap: 6px; transition: var(--transition);
}
.app-feature-item:hover { background: var(--gray-200); transform: translateY(-2px); }
.app-feature-icon { font-size: 24px; margin-bottom: 2px; }
.app-feature-item h4 { font-size: 14px; font-weight: 700; color: var(--gray-900); }
.app-feature-item p { font-size: 12px; color: var(--gray-500); line-height: 1.5; }

.app-mockup { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.phone-frame {
    width: 260px; height: 520px; background: var(--gray-900);
    border-radius: 32px; padding: 10px; box-shadow: var(--shadow-xl); position: relative;
    flex-shrink: 0;
}
.phone-screen {
    width: 100%; height: 100%; background: var(--gray-100);
    border-radius: 24px; overflow: hidden; display: flex;
    flex-direction: column;
}
.phone-notch {
    width: 100px; height: 24px; background: var(--gray-900);
    border-radius: 0 0 14px 14px; margin: 0 auto;
}
.phone-content { flex: 1; padding: 12px; display: flex; flex-direction: column; gap: 10px; overflow-y: auto; }
.phone-header { display: flex; align-items: center; justify-content: space-between; padding: 6px 2px; }
.phone-header span { font-size: 14px; font-weight: 700; color: var(--gray-800); }
.phone-version { font-size: 11px; color: var(--gray-400); }

.phone-color-preview {
    width: 100%; height: 70px; border-radius: 10px;
    background: linear-gradient(135deg, #e74c3c, #f39c12, #2ecc71, #3498db, #9b59b6);
    display: flex; align-items: center; justify-content: center;
    color: white; font-weight: 700; font-size: 13px; text-shadow: 0 1px 3px rgba(0,0,0,0.3);
    transition: var(--transition);
}
.phone-palette { display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; }
.palette-color {
    width: 24px; height: 24px; border-radius: 5px; cursor: pointer;
    transition: var(--transition); border: 2px solid transparent;
    flex-shrink: 0;
}
.palette-color:hover, .palette-color.selected { border-color: var(--gray-900); transform: scale(1.1); }
.palette-color:focus-visible { outline: 2px solid var(--gray-900); outline-offset: 2px; }

.phone-hex-input {
    width: 100%; padding: 8px 10px; background: var(--white);
    border: 1px solid var(--gray-300); border-radius: 6px;
    font-family: 'Courier New', monospace; font-size: 13px;
    color: var(--gray-800); outline: none; min-height: 36px;
}
.phone-hex-input:focus { border-color: var(--gray-900); }

.phone-ratio { font-size: 11px; color: var(--gray-400); text-align: center; padding: 2px 0; }

.phone-mix-btn {
    width: 100%; padding: 10px; background: var(--gray-900);
    color: var(--white); border: none; border-radius: 6px;
    font-size: 13px; font-weight: 600; cursor: pointer;
    margin-top: auto; font-family: inherit; transition: var(--transition);
    min-height: 40px; touch-action: manipulation;
}
.phone-mix-btn:hover { background: var(--gray-700); }
.phone-mix-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.about-content h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); font-weight: 800; letter-spacing: -0.5px; color: var(--gray-900); margin-bottom: 16px; line-height: 1.2; }
.about-content p { font-size: 15px; color: var(--gray-500); line-height: 1.8; margin-bottom: 14px; }
.about-list { list-style: none; margin-top: 20px; }
.about-list li { display: flex; align-items: flex-start; gap: 10px; padding: 10px 0; font-size: 14px; color: var(--gray-700); }
.about-list li .check {
    width: 22px; height: 22px; min-width: 22px; background: var(--gray-100);
    border-radius: 5px; display: flex; align-items: center;
    justify-content: center; font-size: 11px; color: var(--gray-600); margin-top: 2px;
}
.about-visual { position: relative; }
.about-image { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* ===== ORDER FORM ===== */
.order-wrapper { max-width: 700px; margin: 0 auto; }
.order-form {
    background: var(--white); border-radius: var(--radius-lg); padding: clamp(24px, 5vw, 48px);
    box-shadow: var(--shadow-lg); border: 1px solid var(--gray-200);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--gray-700); margin-bottom: 5px; }
.form-group input, .form-group select, .form-group textarea {
    padding: 11px 14px; border: 1px solid var(--gray-300); border-radius: 8px;
    font-size: 15px; font-family: inherit; color: var(--gray-800);
    transition: var(--transition); background: var(--gray-50);
    min-height: 44px;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--gray-900); box-shadow: 0 0 0 3px rgba(33,37,41,0.1);
    background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 90px; }
.form-submit { grid-column: 1 / -1; margin-top: 6px; }
.form-submit .btn { width: 100%; justify-content: center; padding: 15px; font-size: 16px; }
.form-note { grid-column: 1 / -1; text-align: center; font-size: 11px; color: var(--gray-500); margin-top: 4px; }

.success-message { display: none; text-align: center; padding: 40px 30px; }
.success-message.active { display: block; animation: fadeInUp 0.5s ease-out; }
.success-icon {
    width: 70px; height: 70px; background: #e8f5e9; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 32px;
}
.success-message h3 { font-size: clamp(20px, 4vw, 24px); font-weight: 700; color: var(--gray-900); margin-bottom: 10px; }
.success-message p { font-size: 14px; color: var(--gray-500); line-height: 1.6; }
.success-message .btn { margin-top: 20px; }

/* ===== CONTACTS ===== */
.contacts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.contact-card {
    background: var(--white); border-radius: var(--radius-lg); padding: 24px;
    text-align: center; border: 1px solid var(--gray-200); transition: var(--transition);
}
.contact-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.contact-icon-wrap {
    width: 48px; height: 48px; background: var(--gray-100); border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 14px; font-size: 20px;
}
.contact-card h3 { font-size: 15px; font-weight: 700; color: var(--gray-900); margin-bottom: 6px; }
.contact-card p { font-size: 13px; color: var(--gray-500); line-height: 1.6; }
.contact-card a { color: var(--gray-700); text-decoration: none; font-weight: 600; }
.contact-card a:hover { color: var(--gray-900); }

/* ===== FOOTER ===== */
.footer { background: var(--gray-900); color: var(--gray-400); padding: 40px 20px 24px; }
.footer-inner { max-width: var(--container-max); margin: 0 auto; }
.footer-top {
    display: flex; justify-content: space-between; align-items: flex-start;
    padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.1);
    flex-wrap: wrap; gap: 32px;
}
.footer-brand { max-width: 280px; }
.footer-brand .logo { color: var(--white); margin-bottom: 12px; }
.footer-brand .logo-icon { background: rgba(255,255,255,0.15); }
.footer-desc { font-size: 14px; line-height: 1.7; color: var(--gray-500); }
.footer-links h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--gray-300); margin-bottom: 14px; }
.footer-links a { display: block; color: var(--gray-500); text-decoration: none; font-size: 14px; padding: 3px 0; transition: var(--transition); }
.footer-links a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; font-size: 12px; color: var(--gray-600); flex-wrap: wrap; gap: 12px; }

/* ===== MODAL ===== */
.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.5); backdrop-filter: blur(4px);
    z-index: 2000; align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.active { display: flex; animation: fadeIn 0.2s ease-out; }
.modal {
    background: var(--white); border-radius: var(--radius-lg); padding: clamp(24px, 5vw, 40px);
    max-width: 480px; width: 100%; box-shadow: var(--shadow-xl);
    animation: scaleIn 0.3s ease-out; position: relative; max-height: 90vh; overflow-y: auto;
}
@keyframes scaleIn { from { transform: scale(0.95); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-close {
    position: absolute; top: 14px; right: 14px; width: 34px; height: 34px;
    border: none; background: var(--gray-100); border-radius: 8px; cursor: pointer;
    font-size: 16px; color: var(--gray-500); display: flex; align-items: center;
    justify-content: center; transition: var(--transition);
}
.modal-close:hover { background: var(--gray-200); color: var(--gray-800); }
.modal-close:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.modal h3 { font-size: 20px; font-weight: 700; color: var(--gray-900); margin-bottom: 6px; }
.modal p { font-size: 14px; color: var(--gray-500); margin-bottom: 20px; }
.modal .form-group { margin-bottom: 14px; }
.modal .form-group input, .modal .form-group select { width: 100%; }
.modal .btn { width: 100%; justify-content: center; margin-top: 6px; }

/* ===== REVEAL ANIMATION ===== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

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

/* Large tablets & small desktops (max-width: 1024px) */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 32px; }
    .hero-desc { max-width: 100%; margin-inline: auto; }
    .hero-actions { justify-content: center; }
    .hero-visual { order: -1; }
    .hero-image-wrapper { max-width: 380px; margin-inline: auto; }
    
    .products-grid { grid-template-columns: 1fr; max-width: 500px; }
    
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    
    .app-section-grid { grid-template-columns: 1fr; }
    .app-mockup { order: -1; }
    
    .about-grid { grid-template-columns: 1fr; }
    .about-visual { order: -1; }
    
    .contacts-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Tablets & large phones (max-width: 768px) */
@media (max-width: 768px) {
    .header-inner { padding: 0 16px; }
    
    .nav {
        display: none; position: absolute; top: var(--header-height); left: 0; right: 0;
        background: var(--white); flex-direction: column; padding: 16px;
        border-bottom: 1px solid var(--gray-200); box-shadow: var(--shadow-md);
        gap: 8px;
    }
    .nav.open { display: flex; }
    .mobile-toggle { display: flex; }
    
    .lang-switcher { margin-left: 0; }
    
    .hero { padding-top: calc(var(--header-height) + 30px); }
    .hero h1 { font-size: clamp(1.6rem, 6vw, 2.8rem); }
    
    .features-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
    .feature-card { padding: 20px 16px; }
    
    .app-features-list { grid-template-columns: 1fr; }
    
    .form-grid { grid-template-columns: 1fr; }
    .order-form { padding: 24px 20px; }
    
    .contacts-grid { grid-template-columns: 1fr; }
    
    .footer-top { flex-direction: column; align-items: center; text-align: center; }
    .footer-brand { max-width: 100%; }
    .footer-links { text-align: center; }
    .footer-bottom { justify-content: center; text-align: center; }
    
    .phone-frame { width: 240px; height: 480px; }
}

/* Small phones (max-width: 480px) */
@media (max-width: 480px) {
    :root { --header-height: 64px; }
    
    .header-inner { height: var(--header-height); }
    .logo-icon { width: 36px; height: 36px; font-size: 14px; }
    .logo-text { font-size: 18px; }
    
    .hero { padding: calc(var(--header-height) + 24px) 16px 40px; }
    .hero h1 { font-size: clamp(1.5rem, 7vw, 2.4rem); letter-spacing: -0.5px; }
    .hero-desc { font-size: 15px; margin-bottom: 24px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-actions .btn { width: 100%; max-width: 300px; }
    
    .section { padding: 50px 16px; }
    .section-header { margin-bottom: 32px; }
    .section-title { font-size: clamp(1.4rem, 5.5vw, 2.2rem); }
    
    .products-grid { gap: 16px; }
    .product-image { height: 200px; }
    .product-info { padding: 16px; }
    .product-name { font-size: 18px; }
    
    .features-grid { grid-template-columns: 1fr; }
    .feature-card { padding: 20px; }
    
    .app-section-grid { gap: 32px; }
    .app-subtitle { font-size: 20px; }
    .app-features-list { gap: 10px; }
    .app-feature-item { padding: 14px; }
    
    .phone-frame { width: 220px; height: 440px; border-radius: 28px; }
    .phone-screen { border-radius: 22px; }
    .phone-color-preview { height: 60px; font-size: 12px; }
    .phone-palette { gap: 3px; }
    .palette-color { width: 22px; height: 22px; }
    
    .about-content h2 { font-size: clamp(1.4rem, 5.5vw, 2rem); }
    .about-content p { font-size: 14px; }
    .about-list li { font-size: 14px; }
    
    .order-form { padding: 20px 16px; }
    .form-group input, .form-group select, .form-group textarea { font-size: 16px; min-height: 48px; }
    
    .contacts-grid { gap: 14px; }
    .contact-card { padding: 20px 16px; }
    
    .modal { padding: 24px 20px; margin: 10px; }
    .modal h3 { font-size: 18px; }
    
    .footer { padding: 32px 16px 20px; }
    .footer-bottom { flex-direction: column; gap: 8px; }
}

/* Extra small phones (max-width: 360px) */
@media (max-width: 360px) {
    .hero h1 { font-size: 1.4rem; }
    .btn { padding: 12px 20px; font-size: 14px; min-height: 44px; }
    .product-price { font-size: 20px; }
    .phone-frame { width: 200px; height: 400px; }
}

/* Landscape orientation adjustments */
@media (max-height: 500px) and (orientation: landscape) {
    .hero { min-height: auto; padding: calc(var(--header-height) + 20px) 20px 40px; }
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-visual { display: none; }
    .modal { max-height: 80vh; }
}

/* High DPI / Retina displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .product-image, .hero-image-wrapper img, .about-image {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

/* Dark mode support (optional enhancement) */
@media (prefers-color-scheme: dark) {
    /* Can be extended if needed */
}

/* Print styles */
@media print {
    .header, .hero-actions, .product-cta, .phone-frame, .modal-overlay, .footer { display: none !important; }
    body { background: white; color: black; }
    .section { padding: 20px; }
}