/* CSS Variables */
:root {
  --primary-color: #4CAF50;
  --primary-gradient: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
  --secondary-color: #2c3e50;
  --background-color: #f8f9fa;
  --background-white: #ffffff;
  --text-primary: #2c3e50;
  --text-secondary: #6c757d;
  --border-color: #e9ecef;
  --border-radius: 12px;
  --border-radius-large: 16px;
  --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
  --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--background-color);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Header and Navigation */
.header {
  background: var(--background-white);
  box-shadow: var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary-color);
}

.signup {
  padding: 0.75rem 1.5rem;
  background: var(--primary-gradient);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
  box-shadow: var(--shadow-light);
}

.signup:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.login {
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--text-primary);
  text-decoration: none;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
}

.login:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

/* Main Content */
.login-main {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 0;
}

.login-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-content {
  background: var(--background-white);
  padding: 3rem;
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 500px;
}

.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.login-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.6;
}

.login-form-container {
  width: 100%;
}

.login-form {
  margin-bottom: 2rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}



.form-group input {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--background-white);
  outline: none;
}

.form-group input:focus {
  border-color: var(--primary-color);
}

.login-btn {
  width: 100%;
  padding: 1rem 2rem;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
  margin-top: 1rem;
}

.login-btn:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.demo-info {
  background: #f8f9fa;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
  text-align: center;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.divider {
  position: relative;
  text-align: center;
  margin: 2rem 0;
}

.divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
}

.divider-text {
  background: var(--background-white);
  padding: 0 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}

.social-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--background-white);
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1rem;
}

.social-btn:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.social-icon {
  font-size: 1.2rem;
}

.signup-prompt {
  text-align: center;
  margin-top: 2rem;
}

.signup-prompt p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.signup-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.signup-link:hover {
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .login-container {
    max-width: 500px;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 1rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .login-content {
    padding: 2rem;
  }
  
  .login-title {
    font-size: 2rem;
  }
  
  .social-buttons {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .login-content {
    padding: 1.5rem;
  }
  
  .login-title {
    font-size: 1.75rem;
  }
}