/* ===========================
   Переменные и сброс стилей
   =========================== */
:root {
  --bg-primary: #0D0D0D;
  --bg-secondary: #111111;
  --bg-card: #181818;
  --accent-blue: #00C6FF;
  --accent-orange: #FF6B1A;
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0B0;
  --text-muted: #666666;
  --border: #222222;
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.25s ease;
  --max-width: 1280px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--bg-primary);
  background-image: url('../assets/images/hero-poster.jpg');
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ===========================
   Типографика
   =========================== */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

.accent { color: var(--accent-blue); }
.accent-orange { color: var(--accent-orange); }

/* ===========================
   Сетка и контейнер
   =========================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===========================
   Header / Навигация
   =========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.header.scrolled {
  background: rgba(13, 13, 13, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo__icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-blue));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.nav__link:hover {
  color: var(--text-primary);
}

.header__cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language switcher */
.lang-switcher {
  position: relative;
  display: flex;
  align-items: center;
}

.lang-switcher__current {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  letter-spacing: 0.05em;
  transition: color var(--transition), border-color var(--transition);
}

.lang-switcher:hover .lang-switcher__current {
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

.lang-switcher__menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  padding-top: 6px;
  background: transparent;
  z-index: 200;
}

.lang-switcher__menu-inner {
  background: rgba(20, 20, 20, 0.98);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 60px;
  overflow: hidden;
}

.lang-switcher:hover .lang-switcher__menu {
  display: block;
}

.lang-switcher__link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  transition: color var(--transition), background var(--transition);
}

.lang-switcher__link:hover {
  color: var(--accent-blue);
  background: rgba(0, 198, 255, 0.08);
}

.header__phone {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.header__phone:hover {
  color: var(--accent-blue);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 65px;
  left: 0;
  right: 0;
  background: rgba(13, 13, 13, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem;
  z-index: 99;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  color: var(--text-secondary);
  font-size: 1.1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}

.mobile-nav a:hover { color: var(--text-primary); }

/* ===========================
   Кнопки
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), #0099CC);
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 198, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.btn-orange {
  background: linear-gradient(135deg, var(--accent-orange), #CC4400);
  color: #fff;
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 26, 0.35);
}

/* ===========================
   Разделитель
   =========================== */
.divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ===========================
   Scroll-reveal анимация
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===========================
   Floating кнопки (WA / TG)
   =========================== */
.floating-btns {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 50;
}

.floating-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  transition: transform var(--transition), box-shadow var(--transition);
  font-size: 1.4rem;
}

.floating-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.floating-btn--wa { background: #25D366; }
.floating-btn--tg { background: #2AABEE; }

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--bg-secondary);
  border-top: none;
  padding: 3rem 0 2rem;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent-blue) 25%,
    rgba(255, 255, 255, 0.15) 50%,
    var(--accent-orange) 75%,
    transparent 100%
  );
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer__brand p {
  color: var(--text-secondary);
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  max-width: 280px;
}

.footer__title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

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

.footer__contacts {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__contacts a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer__contacts a:hover { color: var(--accent-blue); }

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ===========================
   Адаптивность
   =========================== */
@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav, .header__phone, .lang-switcher { display: none; }
  .hamburger { display: flex; }

  .section { padding: 3.5rem 0; }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .floating-btns {
    bottom: 1.5rem;
    right: 1.5rem;
  }
}