/*
 * Supplier Security Assessment Portal
 * Copyright © 2025 Richard Stainforth. All rights reserved.
 *
 * Design System - Based on ServiceFlow
 */

/* ========================================
   CSS Variables / Design Tokens
   ======================================== */

:root {
  /* Brand Colors */
  --color-primary: #3B82F6;
  --color-primary-dark: #2563EB;
  --color-primary-light: #60A5FA;
  
  --color-accent-teal: #00D4AA;
  --color-accent-blue: #3B82F6;
  --color-accent-purple: #A855F7;
  --color-accent-amber: #F59E0B;
  
  /* Backgrounds */
  --color-bg-primary: #0F1419;
  --color-bg-surface: #1C2631;
  --color-bg-elevated: #232E3A;
  --color-bg-input: #2A3542;
  --color-bg-hover: #313D4A;
  
  /* Text */
  --color-text-primary: #E7E9EA;
  --color-text-secondary: #8B98A5;
  --color-text-muted: #5A6675;
  --color-text-inverse: #0F1419;
  
  /* Status */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;
  
  /* Risk levels */
  --color-risk-critical: #DC2626;
  --color-risk-high: #F97316;
  --color-risk-medium: #F59E0B;
  --color-risk-low: #10B981;
  
  /* Borders */
  --color-border: #2A3542;
  --color-border-focus: #3B82F6;
  
  /* Typography */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  
  /* Layout */
  --max-width: 800px;
  --header-height: 64px;
}

/* ========================================
   Reset & Base
   ======================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p { margin-bottom: var(--spacing-md); }

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ========================================
   Layout
   ======================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ========================================
   Header
   ======================================== */

.header {
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-accent-teal), var(--color-accent-blue));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.header-meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ========================================
   Progress Bar
   ======================================== */

.progress-container {
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--spacing-lg);
}

.progress-title {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.progress-stats {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.progress-stats strong {
  color: var(--color-primary-light);
}

.progress-bar-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.progress-bar {
  height: 8px;
  background: var(--color-bg-input);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent-teal), var(--color-accent-blue));
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress-steps {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-md);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--spacing-lg);
  overflow-x: auto;
  gap: var(--spacing-xs);
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  min-width: 60px;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.progress-step.active,
.progress-step.completed {
  opacity: 1;
}

.progress-step-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-bg-input);
  border: 2px solid var(--color-border);
  transition: all var(--transition-fast);
}

.progress-step.active .progress-step-dot {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.progress-step.completed .progress-step-dot {
  background: var(--color-success);
  border-color: var(--color-success);
}

.progress-step-label {
  font-size: 0.625rem;
  color: var(--color-text-muted);
  text-align: center;
  white-space: nowrap;
}

.progress-step.active .progress-step-label,
.progress-step.completed .progress-step-label {
  color: var(--color-text-secondary);
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
  padding: var(--spacing-2xl) 0;
  flex: 1;
}

/* ========================================
   Section Header
   ======================================== */

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: white;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.section-description {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.section-framework {
  display: inline-block;
  margin-top: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.section-intro {
  padding: var(--spacing-md);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-info);
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-secondary);
}

/* ========================================
   Form Elements
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.form-group.hidden {
  display: none;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.form-label .required {
  color: var(--color-error);
  margin-left: var(--spacing-xs);
}

.form-guidance {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.form-framework {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

/* Text Inputs */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

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

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%238B98A5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6,9 12,15 18,9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  background-size: 16px;
  padding-right: var(--spacing-2xl);
}

/* Radio & Checkbox Groups */
.form-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.form-option {
  position: relative;
}

.form-option input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.form-option-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  min-width: 80px;
}

.form-option input:checked + .form-option-label {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.form-option input:focus + .form-option-label {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Yes/No/Partial/N/A Options */
.form-options-yesno {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--spacing-sm);
}

.form-option-label.yes:hover,
.form-option input:checked + .form-option-label.yes {
  background: var(--color-success);
  border-color: var(--color-success);
}

.form-option-label.partial:hover,
.form-option input:checked + .form-option-label.partial {
  background: var(--color-warning);
  border-color: var(--color-warning);
  color: var(--color-text-inverse);
}

.form-option-label.no:hover,
.form-option input:checked + .form-option-label.no {
  background: var(--color-error);
  border-color: var(--color-error);
}

.form-option-label.na:hover,
.form-option input:checked + .form-option-label.na {
  background: var(--color-text-muted);
  border-color: var(--color-text-muted);
}

/* Multi-select (Checkboxes) */
.form-multiselect {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.form-checkbox:hover {
  background: var(--color-bg-elevated);
}

.form-checkbox input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.form-checkbox-label {
  font-size: 0.9375rem;
  color: var(--color-text-primary);
}

/* Single Checkbox (Declaration) */
.form-single-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.form-single-checkbox input {
  width: 24px;
  height: 24px;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.form-single-checkbox-text {
  font-size: 1rem;
  color: var(--color-text-primary);
}

/* Validation States */
.form-group.error .form-input,
.form-group.error .form-textarea,
.form-group.error .form-select {
  border-color: var(--color-error);
}

.form-group.error {
  border-color: var(--color-error);
}

.form-error {
  display: none;
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-error);
}

.form-group.error .form-error {
  display: block;
}

/* ========================================
   Navigation Buttons
   ======================================== */

.form-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

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

.btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-hover);
}

.btn-success {
  background: var(--color-success);
  color: white;
}

.btn-success:hover {
  background: #059669;
}

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

.btn svg {
  width: 20px;
  height: 20px;
}

/* ========================================
   Welcome Page
   ======================================== */

.welcome-page {
  text-align: center;
  padding: var(--spacing-3xl) 0;
}

.welcome-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-accent-teal), var(--color-accent-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-icon svg {
  width: 50px;
  height: 50px;
  color: white;
}

.welcome-title {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.welcome-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.welcome-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
  text-align: left;
}

.welcome-info-card {
  background: var(--color-bg-surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.welcome-info-icon {
  width: 40px;
  height: 40px;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.welcome-info-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary-light);
}

.welcome-info-title {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.welcome-info-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0;
}

.welcome-frameworks {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-2xl);
}

.framework-badge {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ========================================
   Summary Page
   ======================================== */

.summary-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.summary-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-accent-teal), var(--color-accent-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.summary-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.summary-title {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
}

.summary-subtitle {
  color: var(--color-text-secondary);
}

/* Risk Score */
.risk-score-card {
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  border: 1px solid var(--color-border);
}

.risk-score-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.risk-score-value {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.risk-score-value.low { color: var(--color-risk-low); }
.risk-score-value.medium { color: var(--color-risk-medium); }
.risk-score-value.high { color: var(--color-risk-high); }
.risk-score-value.critical { color: var(--color-risk-critical); }

.risk-score-rating {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.risk-score-rating.low { color: var(--color-risk-low); }
.risk-score-rating.medium { color: var(--color-risk-medium); }
.risk-score-rating.high { color: var(--color-risk-high); }
.risk-score-rating.critical { color: var(--color-risk-critical); }

.risk-score-bar {
  height: 8px;
  background: var(--color-bg-input);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--spacing-lg) 0;
}

.risk-score-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.risk-score-bar-fill.low { background: var(--color-risk-low); }
.risk-score-bar-fill.medium { background: var(--color-risk-medium); }
.risk-score-bar-fill.high { background: var(--color-risk-high); }
.risk-score-bar-fill.critical { background: var(--color-risk-critical); }

/* Risk Indicators */
.risk-indicators {
  margin-top: var(--spacing-xl);
  text-align: left;
}

.risk-indicators-title {
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.risk-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.risk-indicator-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.risk-indicator-icon.critical { background: var(--color-risk-critical); }
.risk-indicator-icon.high { background: var(--color-risk-high); }
.risk-indicator-icon.positive { background: var(--color-risk-low); }

.risk-indicator-icon svg {
  width: 14px;
  height: 14px;
  color: white;
}

.risk-indicator-text {
  font-size: 0.9375rem;
  color: var(--color-text-primary);
}

/* Section Summaries */
.section-summaries {
  margin-top: var(--spacing-2xl);
}

.section-summaries-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.section-summary {
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.section-summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.section-summary-header:hover {
  background: var(--color-bg-elevated);
}

.section-summary-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.section-summary-number {
  width: 28px;
  height: 28px;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.section-summary.complete .section-summary-number {
  background: var(--color-success);
  color: white;
}

.section-summary-title {
  font-size: 1rem;
  font-weight: 500;
}

.section-summary-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
}

.section-summary-status.complete {
  color: var(--color-success);
}

.section-summary-status.incomplete {
  color: var(--color-warning);
}

.section-summary-chevron {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.section-summary.expanded .section-summary-chevron {
  transform: rotate(180deg);
}

.section-summary-content {
  display: none;
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}

.section-summary.expanded .section-summary-content {
  display: block;
}

.section-summary-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--spacing-sm) 0;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--color-border);
}

.section-summary-item:last-child {
  border-bottom: none;
}

.section-summary-question {
  color: var(--color-text-secondary);
  flex: 1;
  margin-right: var(--spacing-md);
}

.section-summary-answer {
  color: var(--color-text-primary);
  font-weight: 500;
  text-align: right;
  max-width: 50%;
  word-break: break-word;
}

/* Export Actions */
.export-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-2xl);
  flex-wrap: wrap;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
  margin-top: auto;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  text-align: center;
}

.footer-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ========================================
   Loading State
   ======================================== */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-bg-elevated);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 640px) {
  :root {
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
  }
  
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }
  
  .progress-steps {
    justify-content: flex-start;
    padding-bottom: var(--spacing-md);
  }
  
  .form-navigation {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .form-navigation .btn {
    width: 100%;
    justify-content: center;
  }
  
  .form-options-yesno {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .export-actions {
    flex-direction: column;
  }
  
  .export-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .welcome-info {
    grid-template-columns: 1fr;
  }
  
  .section-summary-item {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  .section-summary-answer {
    text-align: left;
    max-width: 100%;
  }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  body {
    background: white;
    color: black;
  }
  
  .header,
  .progress-container,
  .form-navigation,
  .footer,
  .export-actions {
    display: none;
  }
  
  .main-content {
    padding: 0;
  }
  
  .form-group,
  .section-summary {
    background: white;
    border: 1px solid #ccc;
    break-inside: avoid;
  }
  
  .section-summary-content {
    display: block !important;
  }
  
  .risk-score-value,
  .risk-score-rating {
    color: black !important;
  }
}