:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --bg-color: #0f172a;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --card-bg: rgba(30, 41, 59, 0.7);
  --card-border: rgba(255, 255, 255, 0.1);
  --gradient-text: linear-gradient(135deg, #a855f7 0%, #3b82f6 100%);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: radial-gradient(circle at top right, rgba(168, 85, 247, 0.15), transparent 40%),
                    radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.15), transparent 40%);
}

/* Typography */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

p {
  color: var(--text-muted);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
#main-nav {
  padding: 1rem 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.nav-links a:not(.btn) {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:not(.btn):hover {
  color: var(--text-main);
}

.nav-links a.nav-highlight {
  font-weight: 600;
  color: var(--primary);
}

/* Hero Section */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 6rem 0;
  min-height: 70vh;
}

.hero p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: 9999px;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.5);
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 4rem 0;
}

.feature-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
  padding: 2.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  color: var(--text-main);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

/* Privacy Page Specifics */
.content-page {
  padding: 4rem 0;
  max-width: 800px;
}

.content-page h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.content-page p, .content-page ul {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.content-page ul {
  padding-left: 1.5rem;
}

.content-page li {
  margin-bottom: 0.5rem;
}

footer {
  border-top: 1px solid var(--card-border);
  padding: 3rem 0;
  margin-top: 4rem;
  text-align: center;
  background: rgba(15, 23, 42, 0.5);
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.lang-switcher a {
  font-weight: bold;
  font-size: 1rem;
}

.footer-links {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 0;
  font-size: 0.875rem;
}

footer a {
  color: var(--primary);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

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

.animate-up {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* Auth Layout */
.auth-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 2rem;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  padding: 2.5rem;
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* Forms */
.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-main);
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.w-100 { width: 100%; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.alert { padding: 1rem; border-radius: 8px; margin-bottom: 1.5rem; }
.alert-danger { background-color: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.4); color: #fca5a5; }
.alert-success { background-color: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.4); color: #6ee7b7; }
.fw-bold { font-weight: bold; }
.text-decoration-none { text-decoration: none; }
.text-primary { color: var(--primary); }

/* Responsive Media Queries */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  .hero {
    padding: 4rem 0;
    min-height: 50vh;
  }
  
  .nav-container {
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
  }
  
  .nav-links {
    justify-content: center;
    gap: 1rem;
    font-size: 0.9rem;
  }
  
  .content-page {
    padding: 2rem 0;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  
  .btn {
    width: 100%;
  }
  
  .nav-links {
    flex-direction: column;
    gap: 0.8rem;
  }
}