/* Modern SaaS Setup Design System */
:root {
  /* Color System */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-200: #bbf7d0;
  --success-300: #86efac;
  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  --success-800: #166534;
  --success-900: #14532d;

  --error-50: #fef2f2;
  --error-100: #fee2e2;
  --error-200: #fecaca;
  --error-300: #fca5a5;
  --error-400: #f87171;
  --error-500: #ef4444;
  --error-600: #dc2626;
  --error-700: #b91c1c;
  --error-800: #991b1b;
  --error-900: #7f1d1d;

  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-200: #fde68a;
  --warning-300: #fcd34d;
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  --warning-800: #92400e;
  --warning-900: #78350f;

  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;

  /* Spacing System (8px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--neutral-800);
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--neutral-50) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout Components */
.setup-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.setup-card {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 56rem;
  overflow: hidden;
  position: relative;
}

.setup-header {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  color: white;
  padding: var(--space-8) var(--space-6);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.setup-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
  opacity: 0.3;
}

.setup-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
  position: relative;
  z-index: 1;
}

.setup-subtitle {
  font-size: var(--text-lg);
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

.cancel-link {
  color: var(--warning-300);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
  position: relative;
  z-index: 1;
}

.cancel-link:hover {
  color: var(--warning-200);
}

/* Progress Indicator */
.progress-container {
  padding: var(--space-6);
  background: var(--neutral-50);
  border-bottom: 1px solid var(--neutral-200);
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  position: relative;
}

.progress-steps::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--neutral-200);
  z-index: 1;
  transform: translateY(-50%);
}

.progress-line {
  position: absolute;
  top: 50%;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
  z-index: 2;
  transform: translateY(-50%);
  transition: width var(--transition-slow);
  border-radius: var(--radius-full);
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 3;
  background: var(--neutral-50);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
}

.step-circle {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.step-circle.pending {
  background: var(--neutral-200);
  color: var(--neutral-500);
}

.step-circle.active {
  background: var(--primary-500);
  color: white;
  box-shadow: 0 0 0 4px var(--primary-100);
  animation: pulse 2s infinite;
}

.step-circle.completed {
  background: var(--success-500);
  color: white;
}

.step-circle.completed::before {
  content: '✓';
  position: absolute;
  font-size: var(--text-lg);
}

.step-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--neutral-600);
  text-align: center;
  max-width: 5rem;
  line-height: var(--leading-tight);
}

.step-item.active .step-label {
  color: var(--primary-700);
}

.step-item.completed .step-label {
  color: var(--success-700);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 4px var(--primary-100);
  }
  50% {
    box-shadow: 0 0 0 8px var(--primary-100);
  }
}

/* Form Styles */
.setup-content {
  padding: var(--space-8) var(--space-6);
}

.step-content {
  display: none;
  animation: fadeInUp var(--transition-normal);
}

.step-content.active {
  display: block;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.step-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.step-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--neutral-800);
  margin-bottom: var(--space-3);
}

.step-description {
  font-size: var(--text-lg);
  color: var(--neutral-600);
  line-height: var(--leading-relaxed);
  max-width: 32rem;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--neutral-700);
  margin-bottom: var(--space-2);
}

.form-label.required::after {
  content: ' *';
  color: var(--error-500);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-family: inherit;
  transition: all var(--transition-fast);
  background: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input.valid {
  border-color: var(--success-500);
  background: var(--success-50);
}

.form-input.invalid {
  border-color: var(--error-500);
  background: var(--error-50);
}

.form-help {
  font-size: var(--text-sm);
  color: var(--neutral-500);
  margin-top: var(--space-1);
  line-height: var(--leading-relaxed);
}

.form-feedback {
  font-size: var(--text-sm);
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-feedback.success {
  background: var(--success-50);
  color: var(--success-700);
  border: 1px solid var(--success-200);
}

.form-feedback.error {
  background: var(--error-50);
  color: var(--error-700);
  border: 1px solid var(--error-200);
}

.form-feedback.warning {
  background: var(--warning-50);
  color: var(--warning-700);
  border: 1px solid var(--warning-200);
}

/* File Upload */
.file-upload {
  border: 2px dashed var(--neutral-300);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.file-upload:hover {
  border-color: var(--primary-400);
  background: var(--primary-50);
}

.file-upload.dragover {
  border-color: var(--primary-500);
  background: var(--primary-100);
  transform: scale(1.02);
}

.file-upload-icon {
  font-size: var(--text-4xl);
  color: var(--neutral-400);
  margin-bottom: var(--space-4);
}

.file-upload-text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--neutral-700);
  margin-bottom: var(--space-2);
}

.file-upload-hint {
  font-size: var(--text-sm);
  color: var(--neutral-500);
}

.file-input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

/* Radio Groups */
.radio-group {
  display: grid;
  gap: var(--space-3);
}

.radio-item {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.radio-item:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
}

.radio-item.selected {
  border-color: var(--primary-500);
  background: var(--primary-50);
}

.radio-input {
  margin-right: var(--space-3);
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--primary-500);
}

.radio-content {
  flex: 1;
}

.radio-title {
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--space-1);
}

.radio-description {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: var(--leading-relaxed);
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.checkbox-group:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
}

.checkbox-input {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--primary-500);
  margin-top: var(--space-1);
}

.checkbox-content {
  flex: 1;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--neutral-700);
}

.checkbox-content a {
  color: var(--primary-600);
  text-decoration: none;
  font-weight: 600;
}

.checkbox-content a:hover {
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background: var(--neutral-100);
  color: var(--neutral-700);
  border: 2px solid var(--neutral-200);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--neutral-200);
  border-color: var(--neutral-300);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* Success Messages */
.success-message {
  background: linear-gradient(135deg, var(--success-50) 0%, var(--success-100) 100%);
  border: 2px solid var(--success-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  animation: slideInDown var(--transition-normal);
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.success-icon {
  width: 3rem;
  height: 3rem;
  background: var(--success-500);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.success-content h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--success-800);
  margin-bottom: var(--space-1);
}

.success-content p {
  color: var(--success-700);
  font-size: var(--text-sm);
}

/* Alert Messages */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: slideInDown var(--transition-normal);
}

.alert-danger {
  background: var(--error-50);
  border: 1px solid var(--error-200);
  color: var(--error-800);
}

.alert-warning {
  background: var(--warning-50);
  border: 1px solid var(--warning-200);
  color: var(--warning-800);
}

.alert-success {
  background: var(--success-50);
  border: 1px solid var(--success-200);
  color: var(--success-800);
}

.alert-info {
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  color: var(--primary-800);
}

/* Form Actions */
.form-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--neutral-200);
}

/* Loading States */
.loading {
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1rem;
  height: 1rem;
  margin: -0.5rem 0 0 -0.5rem;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .setup-container {
    padding: var(--space-2);
  }
  
  .setup-card {
    border-radius: var(--radius-xl);
  }
  
  .setup-header {
    padding: var(--space-6) var(--space-4);
  }
  
  .setup-title {
    font-size: var(--text-2xl);
  }
  
  .setup-subtitle {
    font-size: var(--text-base);
  }
  
  .progress-container {
    padding: var(--space-4);
  }
  
  .progress-steps {
    flex-wrap: wrap;
    gap: var(--space-2);
  }
  
  .step-circle {
    width: 2.5rem;
    height: 2.5rem;
  }
  
  .step-label {
    font-size: 0.625rem;
    max-width: 4rem;
  }
  
  .setup-content {
    padding: var(--space-6) var(--space-4);
  }
  
  .step-title {
    font-size: var(--text-xl);
  }
  
  .step-description {
    font-size: var(--text-base);
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .progress-steps::before {
    display: none;
  }
  
  .progress-line {
    display: none;
  }
  
  .progress-steps {
    justify-content: center;
    gap: var(--space-1);
  }
  
  .step-item {
    padding: var(--space-1);
  }
  
  .step-circle {
    width: 2rem;
    height: 2rem;
    font-size: var(--text-xs);
  }
  
  .step-label {
    display: none;
  }
}

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

/* Focus Styles */
.btn:focus-visible,
.form-input:focus-visible,
.radio-item:focus-visible,
.checkbox-group:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .setup-container {
    background: white;
  }
  
  .setup-card {
    box-shadow: none;
    border: 1px solid var(--neutral-300);
  }
  
  .setup-header {
    background: var(--neutral-100) !important;
    color: var(--neutral-800) !important;
  }
}