@import url('./variables.css');

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

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-main);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

img, video {
  max-width: 100%;
  display: block;
}

/* Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Header */
.global-header {
  background-color: rgba(10, 25, 47, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-white);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--color-accent);
}

/* Navigation */
.main-nav {
  transition: all var(--transition-normal);
}

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

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link[style*="color: var(--color-accent)"]::after {
  width: 100%;
}

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

/* Mega Menu */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  width: 90vw;
  max-width: 1000px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  color: var(--color-text-main);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  gap: 2rem;
  padding: 2.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  pointer-events: none;
  margin-top: 1.5rem;
  border: 1px solid rgba(0,0,0,0.05);
}

/* Invisible bridge so hover doesn't detach */
.nav-item.has-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 2rem;
}

.nav-item.has-dropdown:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.mega-column {
  flex: 1;
}

.mega-title {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-bottom: 1.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid rgba(76, 175, 80, 0.2);
}

.mega-links li {
  margin-bottom: 0.8rem;
}

.mega-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  display: inline-block;
}

.mega-links a:hover {
  color: var(--color-secondary-dark);
  transform: translateX(5px);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 30px;
  height: 3px;
  background-color: var(--color-white);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* Scroll Animations Base Classes */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in {
  opacity: 0;
  transition: opacity 0.8s ease-out;
}

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

/* Footer */
.global-footer {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: var(--spacing-md);
}

.footer-col h3 {
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.footer-col p {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
  line-height: 1.8;
}

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  position: relative;
  display: inline-block;
}

.footer-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

.footer-links a:hover {
  color: var(--color-white);
  transform: translateX(5px);
}

.footer-links a:hover::after {
  width: 100%;
}

.social-links a:hover {
  color: var(--color-accent) !important;
  opacity: 1 !important;
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
}

/* Responsive */
@media (max-width: 992px) {
  .mobile-toggle {
    display: flex;
  }
  .main-nav {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: rgba(10, 25, 47, 0.98);
    backdrop-filter: blur(20px);
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0); /* Hidden by default with clip-path for smooth reveal */
    visibility: hidden;
  }
  .main-nav.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    visibility: visible;
  }
  .main-nav > ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
  .nav-item {
    width: 100%;
  }
  .mega-menu {
    position: static;
    transform: none;
    width: 100%;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: none;
    padding: 1rem 0 0 1rem;
    background: transparent;
    border: none;
    display: none; /* Hide mega menu by default on mobile */
  }
  .nav-item.has-dropdown.open .mega-menu {
    display: flex;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    margin-top: 0.5rem;
  }
  .mega-title {
    color: var(--color-accent);
    margin-bottom: 0.5rem;
    padding-bottom: 0.2rem;
    font-size: 1.1rem;
  }
  .mega-links a {
    color: rgba(255,255,255,0.7);
  }
}

/* Top Bar (Contact & Registration Banner) */
.top-bar {
  display: none;
}

@media (min-width: 993px) {
  .top-bar {
    display: block;
    background-color: var(--color-primary-light);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
    line-height: 20px;
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 0; /* 8px top/bottom -> total height = 20px + 16px = 36px */
    font-weight: 400;
  }

  .top-bar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .top-bar-left {
    display: flex;
    align-items: center;
    gap: 2rem;
  }

  .top-bar-right {
    display: flex;
    align-items: center;
  }

  .top-bar-link {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color var(--transition-fast);
    text-decoration: none;
  }

  .top-bar-link:hover {
    color: var(--color-accent);
  }

  .top-bar-icon {
    color: var(--color-accent);
    display: inline-block;
    vertical-align: middle;
  }

  .rc-number {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
  }

  /* Offset layout adjust for fixed header with top bar */
  .slide-content,
  .page-hero {
    padding-top: 116px !important; /* 80px + 36px */
  }

  .catalog-header {
    padding-top: 156px !important; /* 120px + 36px */
  }
}