/* Global Styles */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #000;
  color: #fff;
}

a { 
  color: #fff; 
  text-decoration: none; 
  transition: 0.3s;
}

a:hover { 
  color: #ccc; 
}

/* Header */
.site-header {
  background: #000; 
  padding: 15px 0; 
  border-bottom: 2px solid #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.logo a { 
  color: #fff; 
  font-size: 22px; 
  font-weight: bold; 
}

nav ul { 
  list-style: none; 
  display: flex; 
  gap: 20px; 
  margin: 0; 
  padding: 0; 
}

nav ul li a { 
  color: #fff; 
  transition: 0.3s; 
}

nav ul li a:hover { 
  color: #ccc; 
}

#langToggle {
  background: #0066ff;
  color: #000;
  padding: 8px 15px;
  border-radius: 5px;
  font-weight: bold;
  transition: 0.3s;
}

#langToggle:hover {
  background: #fff;
  color: #000;
}

/* Hero */
.hero { 
  text-align: center; 
  padding: 80px 20px; 
  background: #000; 
}

.hero h2 { 
  font-size: 36px; 
  color: #fff; 
}

.hero .btn { 
  background: #0066ff; 
  color: #000; 
  padding: 12px 25px; 
  border-radius: 8px; 
  font-weight: bold;
  transition: 0.3s;
}

.hero .btn:hover {
  background: #fff;
  color: #000;
}

/* Features */
.features-grid { 
  display: flex; 
  gap: 20px; 
  margin-top: 40px; 
}

.feature { 
  flex: 1; 
  background: #000; 
  padding: 20px; 
  border-radius: 8px; 
  text-align: center; 
  border: 1px solid #333;
}

/* Cards */
.courses-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); 
  gap: 20px; 
}

.course-card { 
  background: #000; 
  padding: 20px; 
  border-radius: 8px; 
  box-shadow: 0 0 10px rgba(0,0,0,0.4);
  border: 1px solid #333;
}

/* Login box */
.login-box { 
  background: #000; 
  width: 300px; 
  margin: 40px auto; 
  padding: 20px; 
  border-radius: 10px;
  border: 1px solid #333;
}

input, button { 
  width: 100%; 
  padding: 10px; 
  margin: 8px 0; 
  border: none; 
  border-radius: 5px; 
}

input {
  background: #000;
  color: #fff;
  border: 1px solid #333;
}

input:focus {
  outline: none;
  border-color: #0066ff;
}

button { 
  background: #0066ff; 
  color: #000; 
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #fff;
  color: #000;
}

/* Content */
.content {
  min-height: 70vh;
  padding: 20px;
}

/* Footer */
.site-footer { 
  background: #000; 
  text-align: center; 
  padding: 15px; 
  margin-top: 30px; 
  border-top: 2px solid #333; 
}

/* Error/Success Messages */
.error {
  color: #ff4444;
  background: rgba(255,68,68,0.1);
  padding: 10px;
  border-radius: 5px;
  margin: 10px 0;
}

.success {
  color: #44ff44;
  background: rgba(68,255,68,0.1);
  padding: 10px;
  border-radius: 5px;
  margin: 10px 0;
}

/* Responsive */
@media (max-width: 768px) {
  .header-flex {
    flex-direction: column;
    gap: 15px;
  }
  
  nav ul {
    flex-direction: column;
    text-align: center;
  }
  
  .features-grid {
    flex-direction: column;
  }
  
  .courses-grid {
    grid-template-columns: 1fr;
  }
}