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

:root {
  --primary-color: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --secondary-color: #f8fafc;
  --accent-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 20px;
  --transition-speed: 0.3s;
}

body {
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: 0.01em;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

/* Auth Container */
.auth-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1200px;
  width: 100%;
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  min-height: 600px;
}

.auth-card {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 2rem;
}

.logo i {
  font-size: 2rem;
}

.auth-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 1rem;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

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

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

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-group i {
  position: absolute;
  left: 1rem;
  color: var(--text-secondary);
  z-index: 2;
}

.input-group input,
.input-group select {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.password-toggle {
  position: absolute;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  z-index: 2;
  transition: color 0.2s ease;
}

.password-toggle:hover {
  color: var(--primary-color);
}

/* Password Strength */
.password-strength {
  margin-top: 0.5rem;
}

.strength-bar {
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.25rem;
}

.strength-fill {
  height: 100%;
  background: var(--danger-color);
  transition: all 0.3s ease;
  width: 0%;
}

.strength-fill.weak {
  background: var(--danger-color);
  width: 25%;
}

.strength-fill.fair {
  background: var(--warning-color);
  width: 50%;
}

.strength-fill.good {
  background: var(--accent-color);
  width: 75%;
}

.strength-fill.strong {
  background: var(--accent-color);
  width: 100%;
}

.strength-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Form Options */
.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  position: relative;
  transition: all 0.2s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
  content: "✓";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 0.75rem;
  font-weight: bold;
}

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

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

/* Buttons */
.btn-primary {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: inherit;
  font-size: 0.875rem;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary.full-width {
  width: 100%;
  padding: 1rem;
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: inherit;
  font-size: 0.875rem;
}

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Divider */
.divider {
  position: relative;
  text-align: center;
  margin: 1.5rem 0;
}

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

.divider span {
  background: var(--bg-primary);
  padding: 0 1rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Social Login */
.social-login {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-social {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-family: inherit;
  font-size: 0.875rem;
}

.btn-social:hover {
  background: var(--bg-primary);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-social.google i {
  color: #db4437;
}

.btn-social.microsoft i {
  color: #00a1f1;
}

/* Auth Footer */
.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
}

.auth-footer p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.auth-footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* Auth Image */
.auth-image {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.auth-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.image-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.image-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.image-content p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
}

.feature i {
  width: 20px;
  text-align: center;
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  .auth-container {
    grid-template-columns: 1fr;
    max-width: 500px;
  }

  .auth-image {
    order: -1;
    padding: 2rem;
    min-height: 200px;
  }

  .auth-card {
    padding: 2rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-options {
    flex-direction: column;
    align-items: flex-start;
  }

  .image-content h2 {
    font-size: 1.5rem;
  }

  .image-content p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 1.5rem;
  }

  .auth-header h1 {
    font-size: 1.5rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  .logo i {
    font-size: 1.5rem;
  }
}