@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Color System */
  --bg-primary: #0F172A;
  --bg-secondary: #1E293B;
  --accent-electric: linear-gradient(135deg, #2563EB, #3B82F6);
  --accent-silver: #CBD5F5;
  --accent-white: #F8FAFC;
  --text-primary: #F9FAFB;
  --text-secondary: #E2E8F0;
  --text-muted: #94A3B8;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: 1px solid rgba(59, 130, 246, 0.2);
  --glass-blur: blur(16px);
  --glow-blue: rgba(59, 130, 246, 0.25);
  
  /* Layout */
  --max-width: 1340px;
  --spacing-desktop: 110px;
  --spacing-tablet: 85px;
  --spacing-mobile: 65px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

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

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--accent-white);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
p { color: var(--text-secondary); margin-bottom: 1rem; }

.text-gradient {
  background: var(--accent-electric);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

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

/* Layout Classes */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--spacing-desktop) 0;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  transition: var(--transition-smooth);
  background: transparent;
}

.site-header.scrolled {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  padding: 1rem 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 1001;
}

.logo span {
  background: var(--accent-electric);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background: var(--accent-electric);
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--accent-white);
}

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

.header-cta {
  display: flex;
  align-items: center;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--accent-white);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 1001;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
  border: none;
}

.btn-primary {
  background: var(--accent-electric);
  color: #fff;
  box-shadow: 0 4px 15px var(--glow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  color: var(--accent-white);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* Glassmorphism Components */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('images/german-hotel-night-architecture.jpg');
  background-size: cover;
  background-position: center;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(15,23,42,0.7), rgba(15,23,42,1));
  z-index: -1;
}

.hero-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(15,23,42,0) 70%);
  z-index: -1;
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  text-align: center;
  margin: 0 auto;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--accent-silver);
  margin-bottom: 2.5rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  color: #3B82F6;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Hotel Grid & Cards */
.hotel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 2rem;
}

.hotel-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}

.hotel-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow-blue);
  border-color: rgba(59, 130, 246, 0.5);
}

.hotel-card-img {
  position: relative;
  height: 240px;
  overflow: hidden;
}

.hotel-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.hotel-card:hover .hotel-card-img img {
  transform: scale(1.1);
}

.hotel-price {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--accent-white);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hotel-card-content {
  padding: 2rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.hotel-location {
  color: #3B82F6;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.hotel-card-content h3 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.hotel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.hotel-tags span {
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  color: var(--accent-silver);
}

.hotel-card-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.hotel-card-footer .btn {
  width: 100%;
}

/* Feature Split Section */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-split.reverse {
  direction: rtl;
}

.feature-split.reverse > * {
  direction: ltr;
}

.feature-img {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--glass-border);
}

.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.feature-img::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-shadow: inset 0 0 30px rgba(15, 23, 42, 0.5);
  pointer-events: none;
}

.feature-content h2 {
  margin-bottom: 1.5rem;
}

.feature-list {
  margin: 1.5rem 0;
}

.feature-list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: #3B82F6;
  font-weight: bold;
}

/* Detail Page Header */
.page-hero {
  padding: 150px 0 80px;
  background-color: var(--bg-secondary);
  border-bottom: var(--glass-border);
  position: relative;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--accent-white);
  font-family: inherit;
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: #3B82F6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Data Table / Pricing */
.pricing-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
}

.pricing-table th, .pricing-table td {
  padding: 1.25rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.pricing-table th {
  color: var(--accent-white);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.02);
}

.pricing-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Footer */
.site-footer {
  background: #0B1121;
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  max-width: 300px;
  margin-top: 1rem;
}

.footer-links h4 {
  margin-bottom: 1.5rem;
  color: var(--accent-white);
}

.footer-links ul li {
  margin-bottom: 0.75rem;
}

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

.footer-links a:hover {
  color: var(--accent-electric);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
  .section { padding: var(--spacing-tablet) 0; }
  .feature-split { gap: 2rem; }
  .hotel-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: var(--spacing-mobile) 0; }
  
  .nav-links, .header-cta .btn {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .site-header.nav-open {
    background: var(--bg-primary);
  }
  
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    padding: 2rem;
    border-bottom: var(--glass-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  
  .hero-content h1 { font-size: 2.5rem; }
  
  .feature-split, .feature-split.reverse {
    grid-template-columns: 1fr;
  }
  
  .hotel-grid { grid-template-columns: 1fr; }
  
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  
  .hero-buttons { flex-direction: column; }
}