/* Modern Login Styles for Exam Creator Pro */
:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --secondary: #10B981;
  --background: #F9FAFB;
  --card: #FFFFFF;
  --text: #111827;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --error: #DC2626;
  --success: #10B981;
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  color: var(--text);
  background-color: var(--background);
}

/* Main Layout */
.login-container {
  display: flex;
  min-height: 100vh;
  background-color: var(--background);
}

/* Left Side - Login Form */
.login-sidebar {
  width: 100%;
  max-width: 500px;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--card);
  box-shadow: var(--shadow);
  z-index: 10;
  position: relative;
}

.login-box {
  width: 100%;
  max-width: 400px;
  padding: 2rem 0;
}

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

.logo h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 1rem;
  color: var(--text);
  background: linear-gradient(90deg, #4F46E5 0%, #7C3AED 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.error-message {
  background-color: #FEE2E2;
  color: var(--error);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  text-align: center;
}

/* Form Styles */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: #F9FAFB;
  transition: all 0.2s;
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
  background-color: #FFFFFF;
}

/* Checkbox */
.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-muted);
  user-select: none;
}

.checkbox-container input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  height: 18px;
  width: 18px;
  background-color: #F3F4F6;
  border: 1px solid #D1D5DB;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--primary);
  border-color: var(--primary);
}

.checkmark:after {
  content: "";
  display: none;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

/* Login Button */
.login-button {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background-color 0.2s, transform 0.1s;
  margin-top: 0.5rem;
}

.login-button:hover {
  background-color: var(--primary-dark);
}

.login-button:active {
  transform: translateY(1px);
}

/* Forgot Password Link */
.forgot-password-container {
  text-align: center;
  margin: 1rem 0;
}

.forgot-password {
  color: var(--primary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

.forgot-password:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Register Button */
.register-button-container {
  margin-top: 1.5rem;
  text-align: center;
}

.register-button {
  display: inline-block;
  width: 100%;
  padding: 0.75rem 1.5rem;
  background-color: white;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}

.register-button:hover {
  background-color: #f5f3ff;
  border-color: var(--primary-dark);
  color: var(--primary-dark);
}

.register-button:active {
  transform: translateY(1px);
}

/* Register Link */
.register-link {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.register-link a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  margin-left: 0.25rem;
  transition: color 0.2s;
}

.register-link a:hover {
  text-decoration: underline;
  color: var(--primary-dark);
}

/* Right Side - Feature Showcase */
.feature-showcase {
  flex: 1;
  padding: 4rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #F9FAFB 0%, #F0F9FF 100%);
  position: relative;
  overflow: hidden;
}

.feature-showcase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e0e7ff' fill-opacity='0.4'%3E%3Cpath d='M28 16c1.1 0 2-.9 2-2s-.9-2-2-2-2 .9-2 2 .9 2 2 2zm-2 4c0-1.1-.9-2-2-2s-2 .9-2 2 .9 2 2 2 2-.9 2-2zm32 0c0 1.1.9 2 2 2s2-.9 2-2-.9-2-2-2-2 .9-2 2zm-32 0c-1.1 0-2 .9-2 2s.9 2 2 2 2-.9 2-2-.9-2-2-2zm32 0c-1.1 0-2 .9-2 2s.9 2 2 2 2-.9 2-2-.9-2-2-2zM28 40c1.1 0 2-.9 2-2s-.9-2-2-2-2 .9-2 2 .9 2 2 2zm-2 4c0-1.1-.9-2-2-2s-2 .9-2 2 .9 2 2 2 2-.9 2-2zm32 0c0 1.1.9 2 2 2s2-.9 2-2-.9-2-2-2-2 .9-2 2zM28 64c1.1 0 2-.9 2-2s-.9-2-2-2-2 .9-2 2 .9 2 2 2zm-2 4c0-1.1-.9-2-2-2s-2 .9-2 2 .9 2 2 2 2-.9 2-2zm32 0c0 1.1.9 2 2 2s2-.9 2-2-.9-2-2-2-2 .9-2 2zM28 88c1.1 0 2-.9 2-2s-.9-2-2-2-2 .9-2 2 .9 2 2 2zm-2 4c0-1.1-.9-2-2-2s-2 .9-2 2 .9 2 2 2 2-.9 2-2zm32 0c0 1.1.9 2 2 2s2-.9 2-2-.9-2-2-2-2 .9-2 2z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
  z-index: 0;
}

.feature-content {
  max-width: 800px;
  width: 100%;
  position: relative;
  z-index: 1;
}

.feature-content h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #111827;
  margin-bottom: 1rem;
  line-height: 1.2;
  background: linear-gradient(90deg, #1E40AF 0%, #4F46E5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-content .subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 600px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #111827;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .login-container {
    flex-direction: column;
  }
  
  .login-sidebar {
    max-width: 100%;
    padding: 2rem 1.5rem;
  }
  
  .login-box {
    max-width: 100%;
    padding: 1rem 0;
  }
  
  .feature-showcase {
    padding: 3rem 1.5rem;
  }
  
  .feature-content h2 {
    font-size: 1.875rem;
  }
}

@media (max-width: 640px) {
  .login-sidebar {
    padding: 1.5rem 1rem;
  }
  
  .logo h1 {
    font-size: 1.5rem;
  }
  
  .feature-content h2 {
    font-size: 1.625rem;
  }
  
  .feature-content .subtitle {
    font-size: 1rem;
    margin-bottom: 2rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.feature-card {
  animation: fadeIn 0.5s ease-out forwards;
  opacity: 0;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }