:root {
  --bg-primary: #050505;
  --bg-secondary: #111111;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --accent: #ffffff;
  --border-color: #333333;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: 12px;
  --transition-speed: 0.3s;
}

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

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

a:hover {
  color: var(--text-secondary);
}

/* Navbar (Glassmorphism) */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.7);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-speed) ease;
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-brand img {
  width: 40px;
  height: 32px;
  border-radius: 0;
  object-fit: contain;
  filter: invert(1);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent);
  transition: width var(--transition-speed) ease;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 5% 2rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: -1;
  mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  margin-bottom: 1rem;
  animation: fadeUp 1s ease forwards;
  opacity: 0;
  transform: translateY(30px);
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 2.5rem;
  animation: fadeUp 1s ease 0.2s forwards;
  opacity: 0;
  transform: translateY(30px);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 50px;
  transition: all var(--transition-speed) ease;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-primary);
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background-color: var(--glass-bg);
  transform: translateY(-2px);
}

/* App Grid */
.section {
  padding: 5rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.app-card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.03), transparent);
  transition: left 0.6s ease;
}

.app-card:hover::before {
  left: 100%;
}

.app-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 15px 30px rgba(0,0,0,0.5);
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  margin-bottom: 1.5rem;
  object-fit: cover;
  border: 1px solid var(--glass-border);
}

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

.app-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 5%;
  border-top: 1px solid var(--glass-border);
  margin-top: 4rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Terms Layout */
.content-page {
  padding-top: 8rem;
  max-width: 800px;
  margin: 0 auto;
}

.content-page h1 {
  margin-bottom: 2rem;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1rem;
}

.content-page h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

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

.content-page ul, .content-page ol {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

/* Animations */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Nav */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: left var(--transition-speed) ease;
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
}

.lang-switcher {
  display: flex;
  gap: 5px;
  align-items: center;
  margin-left: auto;
  margin-right: 1rem;
}

.lang-btn {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: bold;
  transition: color 0.2s;
  text-decoration: none;
}

.lang-btn.active {
  color: var(--text-primary) !important;
}