/* ============================================================================
   REGISTER PAGE - Professional Enhanced Styles
   ============================================================================ */

.auth-page {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.auth-page::before {
  content: '';
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 30% 20%, rgba(236, 116, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(236, 116, 0, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* === AUTH SECTION === */
.auth-section {
  padding: 8rem 0 4rem;
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-background {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.auth-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, var(--brand-pale) 0%, transparent 60%),
    radial-gradient(circle at 75% 75%, var(--brand-pale) 0%, transparent 60%);
  opacity: 0.6;
  animation: float 8s ease-in-out infinite;
}

.floating-elements {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
  filter: blur(1px);
}

.shape-1 {
  width: 120px;
  height: 120px;
  top: 15%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 200px;
  height: 200px;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.shape-3 {
  width: 80px;
  height: 80px;
  bottom: 20%;
  left: 60%;
  animation-delay: 4s;
}

/* === AUTH CONTAINER === */
.auth-container {
  max-width: 600px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

/* === AUTH SWITCHER === */
.auth-switcher {
  display: flex;
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: 0.75rem;
  margin-bottom: 3rem;
  border: 1px solid var(--border);
  backdrop-filter: var(--blur);
  position: relative;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.switch-btn {
  flex: 1;
  text-align: center;
  padding: 1rem 1.5rem;
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  z-index: 2;
  backdrop-filter: var(--blur-sm);
}

.switch-btn.active {
  color: white;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  box-shadow: var(--shadow-brand);
}

.switch-btn:not(.active):hover {
  color: var(--brand);
  background: var(--brand-pale);
}

/* === AUTH CARDS === */
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: 3rem;
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(40px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
}

.auth-card.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  animation: fadeInUp 0.6s ease forwards;
  animation-delay: 0.2s;
}

/* === AUTH HEADER === */
.auth-header {
  text-align: center;
  margin-bottom: 3rem;
}

.auth-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2.5rem;
  margin: 0 auto 2rem;
  box-shadow: var(--shadow-brand);
  animation: pulse 2s infinite;
  transition: var(--transition);
}

.auth-icon:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: var(--shadow-glow);
}

.auth-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 1rem 0;
  background: linear-gradient(135deg, var(--text-primary), var(--brand));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.6;
  margin: 0;
}

/* === PROGRESS INDICATOR === */
.progress-indicator {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  margin-bottom: 3rem;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
  width: 0%;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 3px;
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 20px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-20px); }
  100% { transform: translateX(20px); }
}

/* === FORM STYLES === */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.register-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.full-width {
  grid-column: 1 / -1;
}

.form-group {
  margin-bottom: 0;
}

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

.input-icon {
  position: absolute;
  left: 1.25rem;
  color: var(--brand);
  font-size: 1.1rem;
  pointer-events: none;
  z-index: 2;
  transition: var(--transition);
}

.input-wrapper input {
  width: 100%;
  padding: 1.25rem 1.5rem 1.25rem 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
  backdrop-filter: var(--blur-sm);
  box-shadow: var(--shadow);
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-pale), var(--shadow-lg);
  background: var(--brand-pale);
  transform: translateY(-1px);
}

.input-wrapper input:focus + .input-icon,
.input-wrapper.focused .input-icon {
  color: var(--brand-light);
  transform: scale(1.1);
}

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

/* === FORM NOTE === */
.form-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  line-height: 1.5;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  backdrop-filter: var(--blur-sm);
}

.form-note i {
  color: var(--brand);
  margin-right: 0.5rem;
}

/* === PASSWORD TOGGLE === */
.password-toggle {
  position: absolute;
  right: 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.75rem;
  border-radius: var(--radius);
  transition: var(--transition);
  z-index: 2;
}

.password-toggle:hover {
  color: var(--brand);
  background: var(--brand-pale);
}

/* === FORM OPTIONS === */
.form-options {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 1rem;
  margin-top: 2rem;
}

.checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

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

.checkmark {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-radius: 6px;
  position: relative;
  transition: var(--transition);
  background: var(--bg-card);
  flex-shrink: 0;
  margin-top: 2px;
  backdrop-filter: var(--blur-sm);
}

.checkmark::after {
  content: '';
  position: absolute;
  left: 7px;
  top: 3px;
  width: 6px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  opacity: 0;
  transition: var(--transition);
}

.checkbox-wrapper input:checked ~ .checkmark {
  background: var(--brand);
  border-color: var(--brand);
  box-shadow: var(--shadow-brand);
}

.checkbox-wrapper input:checked ~ .checkmark::after {
  opacity: 1;
}

.checkbox-wrapper:hover .checkmark {
  border-color: var(--brand-accent);
  background: var(--brand-pale);
}

.checkbox-text {
  flex: 1;
}

.link {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

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

.link:hover {
  color: var(--brand-light);
}

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

/* === SUBMIT BUTTON === */
.btn-full {
  width: 100%;
  justify-content: center;
  padding: 1.5rem 2rem;
  font-size: 1.1rem;
  font-weight: 700;
  gap: 1rem;
  position: relative;
  overflow: hidden;
  margin-top: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  border: 1px solid var(--brand-accent);
  color: white;
  box-shadow: var(--shadow-brand);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-light) 0%, var(--brand) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

/* === LOADING STATES === */
.btn-loading {
  opacity: 0.8;
  pointer-events: none;
}

.btn-loading i {
  animation: spin 1s linear infinite;
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669) !important;
  border-color: #10b981 !important;
}

.success-checkmark {
  display: none;
  color: white;
}

.btn-success .success-checkmark {
  display: inline;
  animation: bounceIn 0.5s ease;
}

.success-checkmark.show {
  display: inline;
}

/* === AUTH FOOTER === */
.auth-footer {
  text-align: center;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.auth-footer p {
  color: var(--text-muted);
  margin: 0;
  font-size: 1rem;
}

.auth-link {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

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

.auth-link:hover {
  color: var(--brand-light);
}

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

/* === FORM VALIDATION === */
.input-wrapper.error input {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-wrapper.error .input-icon {
  color: #ef4444;
}

.input-wrapper.valid input {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.05);
}

.input-wrapper.valid .input-icon {
  color: #10b981;
}

.form-error {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius);
  border: 1px solid rgba(239, 68, 68, 0.2);
  backdrop-filter: var(--blur-sm);
  font-weight: 500;
}

.form-error i {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
  .auth-section {
    padding: 6rem 0 3rem;
  }
  
  .auth-container {
    padding: 0 1.5rem;
    max-width: 500px;
  }
  
  .auth-card {
    padding: 2.5rem;
  }
  
  .auth-header h2 {
    font-size: 2rem;
  }
  
  .auth-icon {
    width: 80px;
    height: 80px;
    font-size: 2rem;
  }
  
  .form-options {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
  
  .register-grid {
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .auth-container {
    padding: 0 1rem;
    max-width: 400px;
  }
  
  .auth-card {
    padding: 2rem;
    border-left: none;
    border-right: none;
    border-radius: var(--radius-lg);
  }
  
  .auth-switcher {
    border-left: none;
    border-right: none;
    border-radius: var(--radius-lg);
  }
  
  .switch-btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.95rem;
  }
  
  .input-wrapper input {
    padding: 1rem 1.25rem 1rem 3rem;
  }
  
  .btn-full {
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
  }
  
  .auth-header {
    margin-bottom: 2.5rem;
  }
  
  .auth-icon {
    width: 70px;
    height: 70px;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
  }
  
  .auth-header h2 {
    font-size: 1.75rem;
  }
  
  .checkmark {
    width: 20px;
    height: 20px;
  }
  
  .checkmark::after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 8px;
  }
}

/* === ANIMATIONS === */
@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes bounceIn {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.05); }
  70% { transform: scale(0.9); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for better accessibility */
.switch-btn:focus-visible,
.auth-link:focus-visible,
.link:focus-visible,
.checkbox-wrapper:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}