/* Header & Navigation */
header {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  border-bottom: 1px solid var(--border-light);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  gap: var(--space-xl);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: var(--font-weight-bold);
  text-decoration: none;
  color: var(--text-primary);
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
}

.logo-icon {
  width: clamp(32px, 8vw, 48px);
  height: clamp(32px, 8vw, 48px);
  min-width: 32px;
}

.logo-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation Links */
.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
  margin: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  position: relative;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--primary-color);
  background: rgba(255, 107, 107, 0.1);
  transform: translateY(-2px);
}

.nav-links a.active {
  color: var(--primary-color);
  background: rgba(255, 107, 107, 0.15);
}

.nav-links a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 50%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 80%;
}

/* Language Selector */
.language-selector {
  position: relative;
  margin-left: var(--space-md);
}

.language-selector select {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

.language-selector select:hover,
.language-selector select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

/* User Menu */
.user-menu-container {
  position: relative;
}

#authButton {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  cursor: pointer;
}

#authButton:hover,
#authButton:focus {
  border-color: var(--primary-color);
  background: var(--bg-secondary);
  color: var(--primary-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm);
  background: none;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
  color: white;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-20px) rotate(1deg);
  }
  50% {
    transform: translateY(-10px) rotate(0deg);
  }
  75% {
    transform: translateY(-10px) rotate(-1deg);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  animation: heroFadeInUp 1.2s ease-out;
  max-width: 800px;
  padding: 0 var(--space-md);
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  box-sizing: border-box;
}

@keyframes heroFadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: var(--font-weight-black);
  margin-bottom: var(--space-lg);
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-align: center;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  display: block;
}

.hero p {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: var(--font-weight-light);
  margin-bottom: var(--space-2xl);
  opacity: 0.95;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  text-align: center;
  width: 100%;
}

.hero-buttons {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-xl);
}

/* Search Section */
.search-section {
  background: var(--bg-secondary);
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border-light);
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: var(--space-lg);
  color: var(--text-muted);
  z-index: 2;
}

.search-input {
  width: 100%;
  padding: var(--space-lg) var(--space-lg) var(--space-lg) 3rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--font-size-lg);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(255, 107, 107, 0.1);
  outline: none;
}

.search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  max-height: 300px;
  overflow-y: auto;
  display: none;
  margin-top: var(--space-xs);
}

.search-suggestion {
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-fast);
}

.search-suggestion:last-child {
  border-bottom: none;
}

.search-suggestion:hover,
.search-suggestion.active {
  background: var(--bg-secondary);
}

/* Sections */
.section {
  display: none;
  padding: var(--space-3xl) 0;
  min-height: 60vh;
}

.section.active {
  display: block;
  animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Footer */
footer {
  background: linear-gradient(135deg, var(--text-primary), #1a202c);
  color: var(--text-footer);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: auto;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h3,
.footer-section h4 {
  color: white;
  margin-bottom: var(--space-lg);
  font-weight: var(--font-weight-semibold);
}

.footer-section p {
  color: var(--text-footer);
  line-height: var(--line-height-relaxed);
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: var(--space-sm);
}

.footer-section ul li a {
  color: var(--text-footer);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
  color: white;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--text-footer);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid var(--border-footer);
  padding-top: var(--space-lg);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-footer);
  font-size: var(--font-size-sm);
}