:root {
  --primary: #1e3a8a;
  --primary-hover: #172554;
  --primary-light: #eff6ff;
  --accent: #d97706;
  --accent-hover: #b45309;
  --accent-light: #fef3c7;
  --red-accent: #dc2626;
  --red-hover: #b91c1c;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-dark: #0f172a;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-on-dark: #f8fafc;
  --border: #e2e8f0;
  --border-dark: #334155;
  --border-focus: #3b82f6;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.06);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

h1, h2, h3, h4, h5, h6, p {
  overflow-wrap: break-word;
  word-break: break-word;
}

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

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--primary);
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  transition: color 0.15s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
}

/* Dropdown */
.nav-item-dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  padding: 6px 0;
}

.dropdown-toggle svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.nav-item-dropdown:hover .dropdown-toggle svg {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s ease;
}

.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item a {
  display: block;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  transition: background 0.15s;
}

.dropdown-item a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.header-contacts {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-phone:hover {
  color: var(--accent);
}

/* Mobile Toggle */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--text-main);
}

.mobile-menu-btn svg {
  width: 28px;
  height: 28px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(30, 58, 138, 0.35);
}

.btn-accent {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
}

.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-main);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 12px auto 0;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 60px 0 30px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-logo-box {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-desc {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
}

.footer-heading {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-light);
  font-size: 14px;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-contacts p {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 8px;
}

.footer-contacts a {
  color: #ffffff;
  font-weight: 600;
}

.footer-requisites {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 36px;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

.footer-requisites strong {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-light);
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: all 0.25s ease;
}

.modal-overlay.active .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.15s;
}

.modal-close-btn:hover {
  background: var(--border);
  color: var(--text-main);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  background: var(--primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.25s ease;
  z-index: 90;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent);
}

/* Cookie Consent */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-dark);
  color: #ffffff;
  padding: 16px 24px;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
  z-index: 998;
  display: none;
}

.cookie-banner.active {
  display: block;
}

.cookie-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.cookie-text {
  font-size: 14px;
  color: var(--text-light);
  flex: 1;
  min-width: 280px;
}

.cookie-text a {
  color: #60a5fa;
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu, .header-contacts {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }

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

  .header-container {
    height: 60px;
    padding: 0 16px;
  }

  .logo-wrapper {
    gap: 10px;
  }

  .logo-img {
    width: 40px;
    height: 40px;
  }

  .logo-title {
    font-size: 15px;
  }

  .logo-subtitle {
    font-size: 11px;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 8px;
    margin-right: -4px;
  }

  .section-title {
    font-size: 24px;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 320px);
  background: #ffffff;
  z-index: 1001;
  padding: 24px 20px;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.28s ease, visibility 0.28s ease;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-drawer.open,
.mobile-drawer.active {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  z-index: 1000;
  border: 0;
  cursor: pointer;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-list a {
  display: block;
  padding: 10px 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  border-radius: var(--radius-sm);
}

.mobile-nav-list a.btn {
  margin-top: 8px;
  text-align: center;
  color: #ffffff;
}