/* ==========================================================================
   DESIGN SYSTEM & CUSTOM VARIABLES
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;

  /* Color Palette - Light Mode (Default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-color: #e2e8f0;
  --border-focus: #0ea5e9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-rgb: 2, 132, 199;
  --accent: #0d9488;
  --accent-rgb: 13, 148, 136;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  --success-text: #065f46;
  
  --error: #f43f5e;
  --error-bg: #fff1f2;
  --error-border: #fecdd3;
  --error-text: #9f1239;

  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-glass: 0 8px 32px 0 rgba(15, 23, 42, 0.04);

  /* Layout and Borders */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Header scroll height variable loaded via JS */
  --scroll-progress: 0%;
}

/* Dark Mode Overrides */
[data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: #161e2e;
  --bg-card-hover: #1e293b;
  --border-color: #273549;
  --border-focus: #38bdf8;
  --text-primary: #f3f4f6;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  
  --primary: #38bdf8;
  --primary-hover: #7dd3fc;
  --primary-rgb: 56, 189, 248;
  --accent: #2dd4bf;
  --accent-rgb: 45, 212, 191;
  
  --success: #34d399;
  --success-bg: rgba(6, 95, 70, 0.2);
  --success-border: #065f46;
  --success-text: #a7f3d0;
  
  --error: #fb7185;
  --error-bg: rgba(159, 18, 57, 0.2);
  --error-border: #9f1239;
  --error-text: #fecdd3;

  --warning: #fbbf24;
  --warning-bg: rgba(146, 64, 14, 0.2);
  --warning-border: #92400e;
  --warning-text: #fde68a;

  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Scroll Progress Bar */
.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  z-index: 1000;
}

.scroll-progress-bar {
  height: 100%;
  width: var(--scroll-progress);
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.1s ease-out;
}

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */
.container {
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  flex-grow: 1;
}

/* Top bar / Navigation */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  box-shadow: 0 4px 10px rgba(var(--primary-rgb), 0.3);
}

.brand-info h1 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Premium Mode Toggle Button */
.btn-toggle-theme {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.btn-toggle-theme:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.btn-toggle-theme svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Mode-specific icons toggle */
[data-theme="dark"] .icon-sun,
html:not([data-theme="dark"]) .icon-moon {
  display: none;
}

/* ==========================================================================
   CARDS & WRAPPERS
   ========================================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glass);
  padding: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.3s ease;
}

/* Subtle background accent glow on cards */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.85;
}

.card-title-group {
  margin-bottom: 1.75rem;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   ACCORDIONS (MUTUALLY EXCLUSIVE POLICIES)
   ========================================================================== */
.policy-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.policy-section {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.policy-section[open] {
  border-color: rgba(var(--primary-rgb), 0.5);
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.05);
}

.policy-summary {
  list-style: none; /* Hide default browser marker */
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-family: var(--font-display);
  font-size: 1.1rem;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s ease;
}

/* Hide default Chrome/Safari disclosure arrow */
.policy-summary::-webkit-details-marker {
  display: none;
}

.policy-summary:hover {
  background-color: var(--bg-card-hover);
}

.summary-title-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-num {
  font-size: 0.8rem;
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

/* Chevron indicator */
.chevron-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.policy-section[open] .chevron-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

/* Policy Content Layout */
.policy-content {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  line-height: 1.6;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.policy-content p {
  margin-bottom: 1rem;
}

.policy-content ul, .policy-content ol {
  margin-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.policy-content li {
  margin-bottom: 0.5rem;
}

/* Styled inline warnings/notes in policy */
.policy-callout {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin: 1.25rem 0;
  font-size: 0.9rem;
  border-left: 4px solid transparent;
}

.policy-callout.prohibited {
  background-color: var(--error-bg);
  border-left-color: var(--error);
  color: var(--error-text);
}

.policy-callout.acceptable {
  background-color: var(--success-bg);
  border-left-color: var(--success);
  color: var(--success-text);
}

.policy-callout strong {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 700;
}

/* ==========================================================================
   INTERACTIVE SCENARIO COMPLIANCE QUIZ
   ========================================================================== */
.quiz-section {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.quiz-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background: var(--bg-card);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.quiz-question {
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 1rem;
  display: flex;
  gap: 0.5rem;
}

.quiz-question .q-num {
  color: var(--primary);
  font-weight: 700;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quiz-option {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.4;
  transition: all 0.2s ease;
  user-select: none;
}

.quiz-option:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
}

.quiz-option input[type="radio"] {
  margin-top: 0.2rem;
  cursor: pointer;
  accent-color: var(--primary);
}

.quiz-feedback {
  margin-top: 1rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  display: none;
  line-height: 1.4;
}

/* Quiz Visual States */
.quiz-card.correct {
  border-color: var(--success);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.05);
}

.quiz-card.incorrect {
  border-color: var(--error);
  box-shadow: 0 0 10px rgba(244, 63, 94, 0.05);
}

.quiz-option.selected-correct {
  background-color: var(--success-bg);
  border-color: var(--success);
  color: var(--success-text);
}

.quiz-option.selected-incorrect {
  background-color: var(--error-bg);
  border-color: var(--error);
  color: var(--error-text);
}

.quiz-feedback.show-correct {
  display: block;
  background-color: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}

.quiz-feedback.show-incorrect {
  display: block;
  background-color: var(--error-bg);
  color: var(--error-text);
  border: 1px solid var(--error-border);
}

/* Lock overlay helper styles */
.lock-overlay-wrapper {
  position: relative;
}

.lock-shield {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(var(--bg-primary-rgb), 0.75);
  backdrop-filter: blur(4px);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border-color);
  text-align: center;
  padding: 2rem;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lock-shield.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.lock-shield-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.lock-shield-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.lock-shield-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 350px;
}

/* ==========================================================================
   SIGNATURE & FORM VALIDATION
   ========================================================================== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

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

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: var(--font-sans);
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
}

/* Floating checkbox lists */
.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s ease;
}

.checkbox-item:hover {
  background: var(--border-color);
}

.checkbox-item input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

.checkbox-item-text {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* Formal signature block styling */
.signature-block {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.signature-line-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn-primary {
  width: 100%;
  padding: 1.15rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--font-display);
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  user-select: none;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.35);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  background: var(--border-color);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

/* ==========================================================================
   SUCCESS SCREEN (POLICY ACCEPTED VIEW)
   ========================================================================== */
.success-card {
  text-align: center;
  max-width: 650px;
  margin: 0 auto;
}

.success-icon-wrapper {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--success-bg);
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: 0 0 0 10px rgba(16, 185, 129, 0.1);
  animation: pulse-success 2s infinite;
}

.success-icon-wrapper svg {
  width: 40px;
  height: 40px;
  stroke-width: 2.5;
}

@keyframes pulse-success {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* Dynamic Receipt Style */
.receipt-box {
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  text-align: left;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-primary);
  position: relative;
}

.receipt-box::before, .receipt-box::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 4px;
  background-size: 8px 4px;
}

.receipt-header {
  text-align: center;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.receipt-header .title {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.1em;
}

.receipt-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.receipt-row .label {
  color: var(--text-muted);
}

.receipt-row .val {
  font-weight: 700;
  word-break: break-all;
  text-align: right;
  max-width: 60%;
}

.receipt-footer {
  border-top: 1px dashed var(--border-color);
  padding-top: 0.75rem;
  margin-top: 1rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.receipt-hash {
  font-size: 0.7rem;
  color: var(--text-muted);
  word-break: break-all;
  margin-top: 0.5rem;
  display: block;
}

/* Action Group for accepted screen */
.receipt-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (max-width: 480px) {
  .receipt-actions {
    flex-direction: column;
  }
}

.btn-secondary {
  flex: 1;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-muted);
}

.btn-secondary svg {
  width: 18px;
  height: 18px;
}

/* Resource links card */
.resource-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
  margin-top: 1.5rem;
}

.resource-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

.resource-item:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateX(4px);
}

.resource-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.resource-icon svg {
  width: 20px;
  height: 20px;
}

.resource-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.resource-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-restart {
  background: transparent;
  color: var(--text-muted);
  border: none;
  font-size: 0.8rem;
  cursor: pointer;
  text-decoration: underline;
  margin-top: 2rem;
  transition: color 0.2s ease;
}

.btn-restart:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   VIEW TRANSITIONS & UTILITIES
   ========================================================================== */
.view-panel {
  will-change: transform, opacity;
}

/* Native SPA transition definitions */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.35s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Support system preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*),
  ::view-transition-old(*),
  ::view-transition-new(*) {
    animation: none !important;
  }
}

.hidden-element {
  display: none !important;
}

/* ==========================================================================
   PRINT MEDIA STYLES
   ========================================================================== */
@media print {
  body {
    background: white !important;
    color: black !important;
  }

  .scroll-progress-container,
  header,
  .receipt-actions,
  .resource-card,
  .btn-restart,
  .policy-card,
  .quiz-section,
  .lock-shield,
  .lock-overlay-wrapper,
  .signature-block,
  .checkbox-list,
  .btn-primary {
    display: none !important;
  }

  .container {
    padding: 0 !important;
    margin: 0 !important;
    max-width: 100% !important;
  }

  .card {
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .card::before {
    display: none !important;
  }

  /* Force the receipt to fit and display beautifully on printed page */
  .receipt-box {
    border: 1px solid #000 !important;
    background: #fff !important;
    color: #000 !important;
    padding: 2cm !important;
    margin: 0 !important;
    font-size: 10pt !important;
    page-break-inside: avoid;
  }

  .receipt-row .label {
    color: #333 !important;
  }
}