/* ============================================
   Header & Navigation
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--color-gray-200);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon .logo-block {
  width: 100%;
  height: 100%;
  position: relative;
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 2px;
}

.logo-icon .logo-top,
.logo-icon .logo-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  border-radius: 6px;
  overflow: hidden;
}

.logo-icon .logo-top {
  background: var(--color-yellow);
}

.logo-icon .logo-bottom {
  background: var(--color-blue);
}

.logo-icon .logo-top > div,
.logo-icon .logo-bottom > div {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 14px;
  color: white;
}

.logo-text {
  font-size: 28px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-yellow), var(--color-yellow-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-red);
  background: var(--color-red-bg);
}

.nav-link.active {
  color: var(--color-red);
  background: var(--color-red-bg);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--color-red);
  border-radius: 2px;
}

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

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 200px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 12px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  margin-top: 8px;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--color-gray-100);
  color: var(--color-red);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 1001;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--color-white);
  box-shadow: var(--shadow-xl);
  z-index: 1000;
  transition: right var(--transition-normal);
  padding: 100px 24px 24px;
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

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

.mobile-nav-link {
  display: block;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  margin-bottom: 4px;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--color-red-bg);
  color: var(--color-red);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: linear-gradient(180deg, #1A1A2E 0%, #0F0F1A 100%);
  color: var(--color-gray-400);
  padding: 80px 0 30px;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red), var(--color-yellow), var(--color-green), var(--color-blue), var(--color-teal));
}

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

.footer-brand .logo-text {
  font-size: 32px;
  margin-bottom: 20px;
  display: inline-block;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 24px;
  color: var(--color-gray-500);
}

.footer-slogan {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-yellow);
  margin-bottom: 8px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: var(--color-gray-400);
  font-size: 18px;
}

.social-icon:hover {
  background: var(--color-red);
  color: var(--color-white);
  transform: translateY(-3px);
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--color-red);
  border-radius: 2px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.footer-links a::before {
  content: '›';
  color: var(--color-red);
  font-size: 18px;
  font-weight: bold;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.6;
}

.footer-contact .contact-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-yellow);
  font-size: 16px;
}

.footer-contact strong {
  color: var(--color-white);
  display: block;
  margin-bottom: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-gray-500);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 13px;
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: var(--color-white);
}

/* ============================================
   Responsive Header & Footer
   ============================================ */

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

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

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

  .logo-text {
    font-size: 22px;
  }

  .nav,
  .header-cta {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .footer {
    padding: 60px 0 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .mobile-nav {
    width: 100%;
  }
}