/**
 * STROYKA 2026 — Theme Global Components
 * (Header, Mobile Menu, Footer, Modal, Parallax Curved Brick Shapes, Animations)
 */

/* ==========================================================================
   PARALLAX BACKGROUND VERTICAL CURVED BRICKS (Concave Left / Convex Right)
   ========================================================================== */
.parallax-shape {
  position: absolute;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
  transition: transform 0.2s cubic-bezier(0.2, 0, 0.2, 1);
  display: block;
}

.parallax-shape-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.curved-brick-svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 14px 28px rgba(0, 0, 0, 0.12));
}

.parallax-shape--coral .parallax-shape-inner {
  animation: ambient-bobbing-1 9.5s ease-in-out infinite alternate;
}

.parallax-shape--blue .parallax-shape-inner {
  animation: ambient-bobbing-2 10.5s ease-in-out infinite alternate;
}

@keyframes ambient-bobbing-1 {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-16px) rotate(0.8deg);
  }
  100% {
    transform: translateY(0px) rotate(0deg);
  }
}

@keyframes ambient-bobbing-2 {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-18px) rotate(-0.8deg);
  }
  100% {
    transform: translateY(0px) rotate(0deg);
  }
}

/* Vertical Upright Dimensions (Wider & Subtle) */
.shape-section-hero {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 4%;
  right: 1%;
}

.shape-section-about {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 8%;
  left: 1%;
}

.shape-section-themes {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 6%;
  right: 1%;
}

.shape-section-program {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 8%;
  left: 1%;
}

.shape-section-trends {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 5%;
  right: 1%;
}

.shape-section-meetings {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 10%;
  left: 1%;
}

.shape-section-advantages {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 6%;
  right: 1%;
}

.shape-section-venue {
  width: clamp(340px, 32vw, 500px);
  height: clamp(480px, 45vw, 680px);
  top: 8%;
  left: 1%;
}

/* ==========================================================================
   SITE HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height, 72px);
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), height var(--transition-fast);
}

.site-header.is-scrolled,
.site-header--scrolled {
  background-color: var(--header-bg-scrolled);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-transform: uppercase;
  text-decoration: none;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.site-header__logo:hover {
  transform: scale(1.02);
}

.site-header__logo-image,
.site-header__logo img {
  height: 38px;
  width: auto;
  display: block;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-header__nav a {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-header__nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-green);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-fast);
}

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

.site-header__nav a:hover::after {
  transform: scaleX(1);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.site-header__actions .arrow-button {
  padding: 9px 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* Background Switcher */
.bg-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 4px 8px;
}

.bg-switcher__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: all 0.2s ease;
}

.bg-switcher__dot--1 { background: #0a0a0a; border-color: rgba(255, 255, 255, 0.25); }
.bg-switcher__dot--2 { background: #0d131f; border-color: rgba(255, 255, 255, 0.25); }
.bg-switcher__dot--3 { background: linear-gradient(135deg, #0a0e17, #1e293b); border-color: rgba(255, 255, 255, 0.25); }

.bg-switcher__dot.is-active {
  border-color: var(--accent-green) !important;
  transform: scale(1.2);
}

/* Theme Toggle Button */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  color: var(--text-primary);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--accent-green);
  color: #0a0a0a;
  border-color: var(--accent-green);
  transform: rotate(15deg);
}

/* Mobile Menu Trigger Button */
.mobile-menu-trigger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--card-bg, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0;
  transition: all 0.2s ease;
}

.mobile-menu-trigger:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.mobile-menu-trigger__burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 18px;
}

.mobile-menu-trigger__burger span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: currentColor;
  border-radius: 2px;
  transition: all 0.2s ease;
}

/* ==========================================================================
   MOBILE FULLSCREEN NAV PANEL
   ========================================================================== */
.mobile-nav-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  padding: 32px 24px 40px;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.mobile-nav-panel.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-close {
  background: none !important;
  border: none !important;
  color: var(--text-primary) !important;
  font-size: 28px !important;
  cursor: pointer !important;
  padding: 4px 8px !important;
  line-height: 1 !important;
  transition: color 0.2s, opacity 0.2s;
  display: block !important;
}

.mobile-nav-close:hover {
  color: var(--accent-green) !important;
}

.mobile-nav-panel__links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.mobile-nav-panel__links a {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.mobile-nav-panel__links a:hover {
  color: var(--accent-green);
  padding-left: 6px;
}

.mobile-nav-panel__contacts {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   SITE FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--footer-bg, #080808);
  border-top: 1px solid var(--border-color);
  padding: 80px 0 40px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 16px;
  max-width: 320px;
  line-height: 1.6;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-green);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
  padding-left: 4px;
}

.footer-contacts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-contact-item {
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-contact-item a {
  color: var(--text-primary);
  font-weight: 600;
}

.footer-contact-item a:hover {
  color: var(--accent-green);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-legal a {
  color: var(--text-muted);
}

.footer-legal a:hover {
  color: var(--text-secondary);
}

/* Fixed Mobile Bottom Nav Bar */
.mobile-bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--header-bg-scrolled, rgba(10, 10, 10, 0.96));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    z-index: 999;
    align-items: center;
    justify-content: space-around;
    padding: 0 8px;
  }

  .mobile-bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 6px 10px;
    border-radius: 6px;
    transition: color var(--transition-fast);
  }

  .mobile-bottom-nav a i {
    font-size: 16px;
  }

  .mobile-bottom-nav a:hover,
  .mobile-bottom-nav a.is-active {
    color: var(--accent-green);
  }

  .mobile-bottom-nav__cta {
    color: var(--accent-green) !important;
    font-weight: 700 !important;
  }

  body {
    padding-bottom: 60px;
  }
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-revealed {
  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; }

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .site-header__nav {
    display: none !important;
  }

  .mobile-menu-trigger {
    display: inline-flex !important;
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 64px !important;
  }

  .site-header__logo img,
  .site-header__logo-image {
    height: 30px !important;
  }

  .site-header__logo span {
    font-size: 16px !important;
  }

  .bg-switcher {
    display: none !important;
  }

  .footer-top-grid {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 540px) {
  .site-header__actions .arrow-button {
    display: none !important;
  }

  .site-header__actions {
    gap: 8px !important;
  }
}

/* ==========================================================================
   LIGHT THEME COMPONENT OVERRIDES (STROIKA)
   ========================================================================== */
.light-theme .site-header,
[data-bs-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.92) !important;
  border-bottom-color: rgba(0, 0, 0, 0.08) !important;
}

.light-theme .site-header.is-scrolled,
.light-theme .site-header--scrolled,
[data-bs-theme="light"] .site-header.is-scrolled,
[data-bs-theme="light"] .site-header--scrolled {
  background-color: rgba(255, 255, 255, 0.98) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06) !important;
}

.light-theme .site-header__logo span,
[data-bs-theme="light"] .site-header__logo span {
  color: #0f172a !important;
}

.light-theme .theme-toggle,
[data-bs-theme="light"] .theme-toggle {
  background: #f1f5f9 !important;
  border-color: rgba(0, 0, 0, 0.1) !important;
  color: #0f172a !important;
}

.light-theme .theme-toggle:hover,
[data-bs-theme="light"] .theme-toggle:hover {
  background: #97ae03 !important;
  color: #ffffff !important;
  border-color: #97ae03 !important;
}

.light-theme .bg-switcher,
[data-bs-theme="light"] .bg-switcher {
  background: #f1f5f9 !important;
  border-color: rgba(0, 0, 0, 0.1) !important;
}

.light-theme .mobile-menu-trigger,
[data-bs-theme="light"] .mobile-menu-trigger {
  background: #f1f5f9 !important;
  border-color: rgba(0, 0, 0, 0.1) !important;
  color: #0f172a !important;
}

.light-theme .mobile-nav-panel,
[data-bs-theme="light"] .mobile-nav-panel {
  background: #ffffff !important;
  border-left-color: rgba(0, 0, 0, 0.08) !important;
}

.light-theme .mobile-nav-close,
[data-bs-theme="light"] .mobile-nav-close {
  color: #0f172a !important;
}

.light-theme .mobile-nav-panel__links a,
[data-bs-theme="light"] .mobile-nav-panel__links a {
  color: #0f172a !important;
  border-bottom-color: rgba(0, 0, 0, 0.06) !important;
}

.light-theme .mobile-nav-panel__links a:hover,
[data-bs-theme="light"] .mobile-nav-panel__links a:hover {
  color: #97ae03 !important;
}

.light-theme .site-footer,
[data-bs-theme="light"] .site-footer {
  background-color: #f8fafc !important;
  border-top-color: rgba(0, 0, 0, 0.08) !important;
}

.light-theme .footer-brand span,
[data-bs-theme="light"] .footer-brand span {
  color: #0f172a !important;
}

.light-theme .footer-brand img,
[data-bs-theme="light"] .footer-brand img {
  filter: invert(1) brightness(0.1) !important;
}

.light-theme .footer-contact-item strong,
[data-bs-theme="light"] .footer-contact-item strong {
  color: #0f172a !important;
}

.light-theme .footer-links a:hover,
[data-bs-theme="light"] .footer-links a:hover {
  color: #0f172a !important;
}

.light-theme .mobile-bottom-nav,
[data-bs-theme="light"] .mobile-bottom-nav {
  background: rgba(255, 255, 255, 0.96) !important;
  border-top-color: rgba(0, 0, 0, 0.08) !important;
}

/* Light Theme Cards and Containers in Sections */
.light-theme .card,
.light-theme .service-card,
.light-theme .advantage-card,
.light-theme .program-card,
.light-theme .meeting-card,
.light-theme .trend-card,
.light-theme .theme-item,
.light-theme .contact-card,
.light-theme .hero-dates-simple,
[data-bs-theme="light"] .card,
[data-bs-theme="light"] .service-card,
[data-bs-theme="light"] .advantage-card,
[data-bs-theme="light"] .program-card,
[data-bs-theme="light"] .meeting-card,
[data-bs-theme="light"] .trend-card,
[data-bs-theme="light"] .theme-item,
[data-bs-theme="light"] .contact-card,
[data-bs-theme="light"] .hero-dates-simple {
  background: #ffffff !important;
  border-color: rgba(0, 0, 0, 0.08) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.light-theme .theme-item h3,
.light-theme .advantage-card h3,
.light-theme .program-card h3,
.light-theme .meeting-card h3,
.light-theme .trend-card h3,
.light-theme .about-col-card h3,
.light-theme .hero-dates-simple-date,
[data-bs-theme="light"] .theme-item h3,
[data-bs-theme="light"] .advantage-card h3,
[data-bs-theme="light"] .program-card h3,
[data-bs-theme="light"] .meeting-card h3,
[data-bs-theme="light"] .trend-card h3,
[data-bs-theme="light"] .about-col-card h3,
[data-bs-theme="light"] .hero-dates-simple-date {
  color: #0f172a !important;
}

.light-theme .hero-dates-simple-venue,
[data-bs-theme="light"] .hero-dates-simple-venue {
  color: #475569 !important;
}


/* ==========================================================================
   MOBILE FOOTER OPTIMIZATION (COMPACT & CLEAN)
   ========================================================================== */
@media (max-width: 768px) {
  .site-footer {
    padding: 40px 0 24px !important;
  }

  .footer-top-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    margin-bottom: 28px !important;
  }

  .footer-brand p {
    margin-top: 10px !important;
    margin-bottom: 0 !important;
    font-size: 13.5px !important;
    line-height: 1.5 !important;
  }

  .footer-col-title {
    margin-bottom: 10px !important;
    font-size: 12px !important;
    letter-spacing: 0.08em !important;
  }

  .footer-links {
    gap: 6px !important;
  }

  .footer-links a {
    font-size: 13.5px !important;
    padding: 3px 0 !important;
    margin-bottom: 0 !important;
    line-height: 1.4 !important;
  }

  .footer-contacts-list {
    gap: 6px !important;
  }

  .footer-contact-item,
  .footer-contact-address {
    font-size: 13.5px !important;
    line-height: 1.4 !important;
  }

  .footer-bottom {
    padding-top: 20px !important;
    font-size: 12px !important;
    gap: 12px !important;
  }

  .footer-legal {
    gap: 14px !important;
  }
}


/* Стили секции участников выставки */
.section-uch {
    background-color: #121315 !important;
}

.uch-logo-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

/* Базовая тумба: аккуратные минимальные скругления, единая высота */
.uch-logo-card {
    background: #ffffff;
    border-radius: 4px; /* Легкие строгие скругления вместо круглых */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 72px; /* Единая высота строки для всех тумб */
    padding: 2px 4px; /* Минимальные отступы, чтобы логотип занимал всю полезную площадь */
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    overflow: hidden;
    flex-shrink: 0;
}

/* Квадратные тумбы: ширина равна высоте */
.uch-logo-card.is-square {
    width: 72px;
    padding: 3px;
}

/* Прямоугольные тумбы: адаптивная ширина под длинные логотипы */
.uch-logo-card.is-rect {
    width: 140px;
    padding: 2px 6px;
}

.uch-logo-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

.uch-logo-card img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

/* На мобильных экранах: чтобы не мельчило и не тратило место */
@media (max-width: 576px) {
    .uch-logo-grid {
        gap: 8px;
    }
    .uch-logo-card {
        height: 60px;
        padding: 2px 4px;
        border-radius: 3px;
    }
    .uch-logo-card.is-square {
        width: 60px;
        padding: 2px;
    }
    .uch-logo-card.is-rect {
        width: 110px;
        padding: 2px 4px;
    }
}