/* CSS Variables */
:root {
  --primary-gradient: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
  --secondary-gradient: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
  --accent-gradient: linear-gradient(135deg, #FF9800 0%, #F57C00 100%);
  --background-light: #f8f9fa;
  --background-white: #ffffff;
  --text-primary: #2c3e50;
  --text-secondary: #6c757d;
  --text-light: #95a5a6;
  --border-color: #e9ecef;
  --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
  --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
  --border-radius: 12px;
  --border-radius-large: 20px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  min-height: 100vh;
}

.container {
  width: 100%;
  margin: 0;
  padding: 0;
}

/* Header Styles */
.header {
  background: var(--background-white);
  box-shadow: var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

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

.logo {
  display: flex;
  align-items: center;
}

.logo-text {
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: var(--transition);
}

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

.signup, .login {
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
  display: inline-block;
}

.signup {
  background: var(--primary-gradient);
  color: white;
}

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

.login {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

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

/* Main Signup Section */
.signup-main {
  padding: 4rem 0;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.signup-content {
  background: var(--background-white);
  padding: 3rem;
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-color);
}

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

.signup-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, #4CAF50 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* Form Styles */
.signup-form-container {
  max-width: 400px;
  margin: 0 auto;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.form-group input {
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--background-white);
  color: var(--text-primary);
}

.form-group input:focus {
  outline: none;
  border-color: #4CAF50;
}

.form-group input::placeholder {
  color: var(--text-light);
}

/* Button Styles */
.signup-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;
}

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

.demo-btn {
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: linear-gradient(135deg, #FF9800 0%, #F57C00 100%);
  color: white;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

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

.demo-icon {
  font-size: 1.1rem;
}

/* Divider */
.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 */
.social-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.social-btn {
  padding: 0.875rem 1.5rem;
  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: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.social-icon {
  font-size: 1.1rem;
}

.google-btn:hover {
  border-color: #DB4437;
  color: #DB4437;
}

.apple-btn:hover {
  border-color: #000;
  color: #000;
}

/* Login Prompt */
.login-prompt {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

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

.login-link {
  color: #4CAF50;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.login-link:hover {
  color: #45a049;
  text-decoration: underline;
}



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

@media (max-width: 768px) {
  .nav-container {
    padding: 1rem 1.5rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .nav-links a {
    font-size: 0.85rem;
  }
  
  .signup-main {
    padding: 2rem 0;
  }
  
  .signup-container {
    padding: 0 1rem;
  }
  
  .signup-content {
    padding: 2rem;
  }
  
  .signup-title {
    font-size: 2rem;
  }
  

}

@media (max-width: 480px) {
  .signup-content {
    padding: 1.5rem;
  }
  
  .signup-title {
    font-size: 1.75rem;
  }
  
  .signup-subtitle {
    font-size: 1rem;
  }
  
  .form-group input {
    padding: 0.875rem;
  }
  
  .signup-btn, .demo-btn, .social-btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* Focus styles for accessibility */
.signup-btn:focus,
.demo-btn:focus,
.social-btn:focus,
.form-group input:focus {
  outline: 2px solid #4CAF50;
  outline-offset: 2px;
}