/* ===== Variables ===== */
:root {
    --primary: #0f2137;
    --primary-light: #1a3a5c;
    --accent: #00a0e3;
    --accent-light: #38bdf8;
    --accent-glow: rgba(0,160,227,0.35);
    --gradient-accent: linear-gradient(135deg, #00a0e3 0%, #38bdf8 50%, #7dd3fc 100%);
    --gradient-dark: linear-gradient(135deg, #0f2137 0%, #1a3a5c 40%, #0c4a6e 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    --white: #ffffff;
    --bg-light: #f0f4f8;
    --bg-subtle: #f8fafc;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: rgba(0,0,0,0.06);
    --border-light: rgba(255,255,255,0.08);
    --glass: rgba(255,255,255,0.7);
    --glass-border: rgba(255,255,255,0.3);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.1);
    --shadow-accent: 0 8px 32px rgba(0,160,227,0.2);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xl: 24px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1240px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', system-ui, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== Container ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    transition: all var(--transition);
}
.header.scrolled {
    box-shadow: 0 2px 24px rgba(0,0,0,0.08);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 16px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    flex-shrink: 0;
}
.logo img { height: 40px; width: auto; }
.logo-text span {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 2px;
}
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text);
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    position: relative;
    white-space: nowrap;
}
.nav a:hover { color: var(--accent); background: rgba(0,160,227,0.06); }
.nav a.active {
    color: var(--accent);
    background: rgba(0,160,227,0.08);
    font-weight: 600;
}
.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: 100px;
    background: rgba(0,160,227,0.06);
    transition: all var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}
.header-phone:hover { background: rgba(0,160,227,0.12); color: var(--accent); }
.header-phone svg { width: 16px; height: 16px; fill: var(--accent); flex-shrink: 0; }
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: 4px 0;
}
.burger span {
    display: block;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    padding: 160px 0 120px;
    background: var(--gradient-dark);
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0,160,227,0.12) 0%, transparent 60%);
    border-radius: 50%;
    animation: heroPulse 8s ease-in-out infinite alternate;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -300px;
    left: -150px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(56,189,248,0.08) 0%, transparent 60%);
    border-radius: 50%;
    animation: heroPulse 10s ease-in-out infinite alternate-reverse;
}
@keyframes heroPulse {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.15) translate(30px, -20px); }
}
/* Mesh gradient overlay */
.hero .hero-mesh {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,160,227,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(56,189,248,0.06) 0%, transparent 40%),
        radial-gradient(ellipse at 60% 80%, rgba(125,211,252,0.05) 0%, transparent 40%);
    pointer-events: none;
}
/* Grain texture */
.hero .hero-grain {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    pointer-events: none;
}
.hero .container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 80px;
}
.hero-content { flex: 1; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0,160,227,0.12);
    border: 1px solid rgba(0,160,227,0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 28px;
    color: var(--accent-light);
    letter-spacing: 0.3px;
    backdrop-filter: blur(10px);
}
.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { opacity: 0.7; box-shadow: 0 0 0 6px transparent; }
}
.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}
.hero h1 span {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 1.1rem;
    opacity: 0.7;
    margin-bottom: 40px;
    max-width: 520px;
    line-height: 1.8;
    font-weight: 400;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual {
    flex: 0 0 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-icon-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.hero-icon-card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.hero-icon-card:hover {
    transform: translateY(-6px);
    background: rgba(255,255,255,0.1);
    border-color: rgba(0,160,227,0.3);
    box-shadow: 0 8px 32px rgba(0,160,227,0.15);
}
.hero-icon-card svg { width: 36px; height: 36px; fill: var(--accent-light); margin-bottom: 12px; flex-shrink: 0; }
.hero-icon-card span { font-size: 0.8rem; opacity: 0.8; font-weight: 500; line-height: 1.4; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition);
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: var(--gradient-accent);
    color: var(--white);
    box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
}
.btn-primary:hover::after { opacity: 1; }
.btn-outline {
    border: 1.5px solid rgba(255,255,255,0.25);
    color: var(--white);
    backdrop-filter: blur(10px);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-2px);
}
.btn-dark {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow);
}
.btn-dark:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== Section ===== */
.section {
    padding: 100px 0;
    position: relative;
}
.section-light {
    background: var(--bg-subtle);
}
.section-title {
    text-align: center;
    margin-bottom: 56px;
}
.section-title h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}
.section-title p {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}
.section-title .accent-line {
    display: block;
    width: 40px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
    margin: 20px auto 0;
}

/* ===== Stats ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 56px;
}
.stat-card {
    text-align: center;
    padding: 36px 20px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity var(--transition);
}
.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.stat-card:hover::before { opacity: 1; }
.stat-card .number {
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}
.stat-card .label {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ===== Cards Grid ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform var(--transition);
    transform-origin: left;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.card:hover::before { transform: scaleX(1); }
.card-icon {
    width: 52px;
    height: 52px;
    background: rgba(0,160,227,0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all var(--transition);
}
.card:hover .card-icon {
    background: var(--gradient-accent);
}
.card:hover .card-icon svg { fill: var(--white); }
.card-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--accent);
    transition: fill var(--transition);
}
.card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}
.card p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.65;
}

/* ===== Advantages ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.advantage-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 28px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.advantage-num {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    background: var(--gradient-accent);
    color: var(--white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px var(--accent-glow);
}
.advantage-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}
.advantage-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Partners CTA ===== */
.partners-cta {
    background: var(--gradient-dark);
    border-radius: var(--radius-xl);
    padding: 64px;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 48px;
    position: relative;
    overflow: hidden;
}
.partners-cta::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0,160,227,0.15) 0%, transparent 60%);
    border-radius: 50%;
}
.partners-cta-content { flex: 1; position: relative; z-index: 1; }
.partners-cta h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}
.partners-cta p {
    opacity: 0.7;
    margin-bottom: 28px;
    max-width: 500px;
    line-height: 1.7;
}
.partners-cta-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.partners-cta-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    opacity: 0.85;
    font-weight: 500;
}
.partners-cta-features li svg {
    width: 18px;
    height: 18px;
    fill: var(--accent-light);
    flex-shrink: 0;
}
.partners-cta > div:last-child { position: relative; z-index: 1; }

/* ===== News ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.news-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.news-card-body {
    padding: 28px;
}
.news-date {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 12px;
    padding: 4px 12px;
    background: rgba(0,160,227,0.08);
    border-radius: 100px;
    letter-spacing: 0.3px;
}
.news-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    line-height: 1.45;
}
.news-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.65;
}
.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 14px;
    transition: all var(--transition);
}
.news-link:hover { gap: 10px; }

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    border-radius: var(--radius);
    background: var(--white);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.contact-item:hover {
    border-color: rgba(0,160,227,0.2);
    box-shadow: 0 4px 16px rgba(0,160,227,0.06);
}
.contact-item-icon {
    width: 44px;
    height: 44px;
    background: rgba(0,160,227,0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.contact-item-icon svg {
    width: 20px;
    height: 20px;
    fill: var(--accent);
}
.contact-item h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}
.contact-item p, .contact-item a {
    font-size: 0.88rem;
    color: var(--text-light);
}
.contact-item a:hover { color: var(--accent); }
.contact-form {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 36px;
    border: 1px solid var(--border);
}
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: 0.01em;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 13px 18px;
    border: 1.5px solid rgba(0,0,0,0.08);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    transition: all var(--transition);
    outline: none;
    background: var(--bg-subtle);
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0,160,227,0.08);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.contact-form .btn { width: 100%; justify-content: center; }

/* ===== Footer ===== */
.footer {
    background: var(--primary);
    color: var(--white);
    padding: 72px 0 28px;
    position: relative;
    overflow: hidden;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-accent);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 48px;
}
.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.02em;
}
.footer-about p {
    font-size: 0.85rem;
    opacity: 0.6;
    line-height: 1.7;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    font-size: 0.85rem;
    opacity: 0.55;
    padding: 5px 0;
    transition: all var(--transition);
}
.footer-col a:hover { opacity: 1; transform: translateX(4px); }
.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    opacity: 0.6;
    margin-bottom: 10px;
}
.footer-contact-item svg {
    width: 16px;
    height: 16px;
    fill: var(--accent-light);
    flex-shrink: 0;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    opacity: 0.4;
}

/* ===== Page Header (inner pages) ===== */
.page-header {
    padding: 130px 0 56px;
    background: var(--gradient-dark);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-header::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0,160,227,0.1) 0%, transparent 60%);
    border-radius: 50%;
}
.page-header h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
    position: relative;
}
.page-header p {
    opacity: 0.65;
    font-size: 1.05rem;
    position: relative;
}
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    margin-top: 20px;
    font-size: 0.82rem;
    opacity: 0.5;
    position: relative;
}
.breadcrumbs a { transition: opacity var(--transition); }
.breadcrumbs a:hover { opacity: 1; }
.breadcrumbs span { opacity: 0.4; }

/* ===== Page Content ===== */
.page-content {
    padding: 72px 0;
}
.page-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.page-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}
.page-content ul {
    margin-bottom: 16px;
    padding-left: 0;
}
.page-content ul li {
    list-style: none;
    color: var(--text-light);
    margin-bottom: 10px;
    line-height: 1.6;
    padding-left: 24px;
    position: relative;
}
.page-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--gradient-accent);
    border-radius: 50%;
}

/* ===== Chat Widget ===== */
.chat-toggle {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 60px;
    height: 60px;
    background: var(--gradient-accent);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 28px var(--accent-glow);
    z-index: 999;
    transition: all var(--transition);
}
.chat-toggle:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 36px var(--accent-glow);
}
.chat-toggle svg { width: 26px; height: 26px; fill: var(--white); }
.chat-window {
    position: fixed;
    bottom: 100px;
    right: 28px;
    width: 390px;
    max-height: 520px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: 0 24px 80px rgba(0,0,0,0.15);
    z-index: 998;
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: chatSlideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.chat-window.open { display: flex; }
@keyframes chatSlideUp {
    from { opacity: 0; transform: translateY(24px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.chat-header {
    background: var(--gradient-dark);
    color: var(--white);
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.chat-header h4 { font-size: 0.9rem; font-weight: 700; }
.chat-close {
    color: var(--white);
    opacity: 0.6;
    font-size: 1.3rem;
    transition: opacity var(--transition);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.chat-close:hover { opacity: 1; background: rgba(255,255,255,0.1); }
.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    min-height: 300px;
    max-height: 360px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.chat-msg {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    line-height: 1.55;
}
.chat-msg.bot {
    background: var(--bg-subtle);
    color: var(--text);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}
.chat-msg.user {
    background: var(--gradient-accent);
    color: var(--white);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}
.chat-typing {
    display: none;
    align-self: flex-start;
    padding: 12px 16px;
    background: var(--bg-subtle);
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0 20px;
}
.chat-typing.active { display: block; }
.chat-input-area {
    display: flex;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}
.chat-input {
    flex: 1;
    padding: 11px 16px;
    border: 1.5px solid rgba(0,0,0,0.06);
    border-radius: 100px;
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    background: var(--bg-subtle);
    transition: all var(--transition);
}
.chat-input:focus {
    border-color: var(--accent);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(0,160,227,0.08);
}
.chat-send {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.chat-send:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 16px var(--accent-glow);
}
.chat-send svg { width: 16px; height: 16px; fill: var(--white); }

/* ===== Animations ===== */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Mobile Nav Overlay ===== */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15,33,55,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1001;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.mobile-nav a:hover { color: var(--accent-light); background: rgba(255,255,255,0.05); }
.mobile-nav-close {
    position: absolute;
    top: 24px;
    right: 24px;
    color: var(--white);
    font-size: 2rem;
    opacity: 0.6;
    transition: opacity var(--transition);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.mobile-nav-close:hover { opacity: 1; background: rgba(255,255,255,0.1); }

/* ===== Responsive ===== */
@media (max-width: 1140px) {
    .nav a { padding: 7px 8px; font-size: 0.8rem; }
    .header-phone { font-size: 0.85rem; padding: 7px 14px; }
}
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.4rem; }
    .hero-visual { flex: 0 0 300px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .cards-grid, .advantages-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .header-phone { display: none; }
}

@media (max-width: 768px) {
    .nav, .header-phone { display: none; }
    .burger { display: flex; }
    .hero { padding: 130px 0 70px; }
    .hero .container { flex-direction: column; text-align: center; gap: 48px; }
    .hero h1 { font-size: 2rem; }
    .hero p { margin: 0 auto 32px; }
    .hero-buttons { justify-content: center; }
    .hero-visual { flex: none; width: 100%; }
    .hero-icon-grid { gap: 12px; }
    .section { padding: 72px 0; }
    .section-title h2 { font-size: 1.7rem; }
    .cards-grid, .advantages-grid, .news-grid { grid-template-columns: 1fr; }
    .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .partners-cta {
        flex-direction: column;
        padding: 40px 28px;
        text-align: center;
        border-radius: var(--radius);
    }
    .partners-cta-features { grid-template-columns: 1fr; text-align: left; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .chat-window {
        right: 12px;
        left: 12px;
        width: auto;
        bottom: 96px;
        border-radius: var(--radius);
    }
    .page-header h1 { font-size: 1.7rem; }
    .contact-form { padding: 28px 20px; }
}