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

:root {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e8f5f3;
  --bg-card: #ffffff;
  --text-primary: #1a2b3c;
  --text-secondary: #4a5e6d;
  --text-muted: #7a8d9c;
  --accent-primary: #00838f;
  --accent-secondary: #006064;
  --accent-tertiary: #004d40;
  --accent-gradient: linear-gradient(135deg, #00acc1 0%, #00838f 50%, #006064 100%);
  --success: #00897b;
  --danger: #c62828;
  --border: rgba(0, 131, 143, 0.12);
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.auth-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

/* Left Visual Section */
.auth-visual {
  background: var(--bg-secondary);
  padding: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.auth-visual::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 131, 143, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.auth-visual-content {
  position: relative;
  z-index: 1;
  max-width: 500px;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.auth-logo-img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

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

.auth-logo-badge {
  font-size: 0.65rem;
  padding: 0.25rem 0.6rem;
  background: var(--accent-gradient);
  color: var(--bg-primary);
  border-radius: 4px;
  font-weight: 700;
}

.auth-visual-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.auth-visual-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.auth-visual-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.auth-visual-feature {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.auth-visual-feature-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 1.1rem;
}

.auth-visual-feature-text {
  font-size: 1rem;
  color: var(--text-primary);
}

/* Right Form Section */
.auth-form-container {
  padding: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
}

.auth-form-wrapper {
  width: 100%;
  max-width: 420px;
}

.auth-header {
  margin-bottom: 2.5rem;
}

.auth-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

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

/* Social Login */
.auth-social {
  margin-bottom: 2rem;
}

.auth-social-btn {
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-social-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* Divider */
.auth-divider {
  display: flex;
  align-items: center;
  margin: 2rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-divider span {
  padding: 0 1rem;
}

/* Form */
.auth-form {
  margin-bottom: 2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0;
}

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

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

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 131, 143, 0.08);
}

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

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.form-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.form-link:hover {
  color: var(--accent-secondary);
}

.auth-submit-btn {
  width: 100%;
  padding: 1rem 1.5rem;
  background: var(--accent-gradient);
  border: none;
  border-radius: 12px;
  color: var(--bg-primary);
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 131, 143, 0.25);
}

/* Footer */
.auth-footer {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.auth-footer-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.auth-footer-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.auth-footer-link:hover {
  color: var(--accent-secondary);
}

/* Back Link */
.auth-back {
  margin-top: 2rem;
  text-align: center;
}

.auth-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.auth-back-link:hover {
  color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 968px) {
  .auth-container {
    grid-template-columns: 1fr;
  }

  .auth-visual {
    display: none;
  }

  .auth-form-container {
    padding: 2rem;
  }
}

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

  .auth-visual-title {
    font-size: 2rem;
  }

  .auth-title {
    font-size: 1.5rem;
  }
}