/* ========================================
   MAIA-2 Interactive Questionnaire Styles
   ======================================== */

/* --- Custom Properties --- */
:root {
  --color-primary: #5B8A72;
  --color-primary-light: #7BA998;
  --color-primary-dark: #3D6B54;
  --color-bg: #FAF8F5;
  --color-bg-card: #FFFFFF;
  --color-bg-subtle: #F0EDE8;
  --color-text: #2C2C2C;
  --color-text-secondary: #6B6B6B;
  --color-text-muted: #737373;
  --color-accent: #7A5535;
  --color-accent-hover: #5E4028;
  --color-selected: #5B8A72;
  --color-focus-ring: rgba(91, 138, 114, 0.4);
  --chart-fill: rgba(91, 138, 114, 0.15);
  --chart-stroke: #5B8A72;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --transition-speed: 300ms;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus {
  top: 1rem;
}

/* --- Layout --- */
#app {
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem;
  min-height: 100vh;
}

.screen {
  padding-bottom: 4rem;
}

/* --- Transitions --- */
.fade-out {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
}
.fade-in {
  animation: fadeUp var(--transition-speed) ease forwards;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Screen Reader Only --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =========================
   WELCOME SCREEN
   ========================= */

.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 80vh;
  gap: 1rem;
}

/* Breathing Animation */
.breathing-circle-container {
  margin-bottom: 1.5rem;
}
.breathing-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-light) 0%, var(--color-primary) 100%);
  opacity: 0.3;
  animation: breathe 6s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.25; }
  50% { transform: scale(1.25); opacity: 0.4; }
}

.welcome-title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.03em;
}
.welcome-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 420px;
}
.welcome-description {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  line-height: 1.7;
}
.welcome-time {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}
.welcome-citation {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 2rem;
}

/* =========================
   INSTRUCTIONS SCREEN
   ========================= */

.instructions-screen h2 {
  font-size: 1.75rem;
  color: var(--color-primary-dark);
  margin-bottom: 1.5rem;
}

.instructions-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.instructions-text {
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.scale-preview {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.scale-preview-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.scale-preview-row {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}
.scale-preview-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  flex: 1;
}
.scale-preview-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  background: var(--color-bg-card);
}
.scale-preview-value {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}
.scale-preview-text {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-align: center;
}

.instructions-note {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* =========================
   PROGRESS BAR
   ========================= */

.progress-container {
  margin-bottom: 2rem;
}
.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.section-indicator {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.progress-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.progress-bar {
  height: 6px;
  background: var(--color-bg-subtle);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 400ms ease;
}

/* =========================
   QUESTIONNAIRE SCREEN
   ========================= */

.questionnaire-screen h2.subscale-name {
  font-size: 1.5rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}
.subscale-description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.questions-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

/* Question / Fieldset */
.question {
  border: none;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 200ms ease;
}
.question:focus-within {
  box-shadow: var(--shadow-md);
}

.question-text {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
  margin-bottom: 1rem;
  color: var(--color-text);
}
.question-number {
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-right: 0.25rem;
}

/* Scale Row */
.scale-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0.25rem;
  position: relative;
}

.scale-bookend {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  padding-top: 0.6rem;
  flex-shrink: 0;
  min-width: 3rem;
  font-weight: 500;
}
.scale-bookend-left { text-align: right; margin-right: 0.25rem; }
.scale-bookend-right { text-align: left; margin-left: 0.25rem; }

/* Scale Option (radio + label) */
.scale-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background 150ms ease;
  min-width: 44px;
  min-height: 44px;
}
.scale-option:hover {
  background: var(--color-bg-subtle);
}

.scale-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.scale-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid #C5C5C5;
  background: var(--color-bg-card);
  transition: all 150ms ease;
  flex-shrink: 0;
}

.scale-option input[type="radio"]:focus-visible + .scale-circle {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.scale-option.selected .scale-circle,
.scale-option input[type="radio"]:checked + .scale-circle {
  background: var(--color-selected);
  border-color: var(--color-selected);
  transform: scale(1.1);
}

.scale-value {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}
.scale-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.2;
}

/* =========================
   NAVIGATION BUTTONS
   ========================= */

.nav-buttons {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-bg-subtle);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 150ms ease;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-primary-dark);
  color: #FFFFFF;
}
.btn-primary:hover:not(:disabled) {
  background: #2E5640;
}
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}
.btn-secondary:hover {
  background: #E4E0DA;
}

.btn-accent {
  background: var(--color-accent);
  color: #FFFFFF;
}
.btn-accent:hover {
  background: var(--color-accent-hover);
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* =========================
   REVIEW SCREEN
   ========================= */

.review-screen h2 {
  font-size: 1.75rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}
.review-intro {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.review-sections {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.review-section {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.review-section-header {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  cursor: pointer;
  user-select: none;
  list-style: none;
  gap: 1rem;
}
.review-section-header::-webkit-details-marker {
  display: none;
}
.review-section-header::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-text-secondary);
  border-bottom: 2px solid var(--color-text-secondary);
  transform: rotate(-45deg);
  transition: transform 200ms ease;
  flex-shrink: 0;
}
details[open] > .review-section-header::before {
  transform: rotate(45deg);
}

.review-section-name {
  font-weight: 600;
  flex: 1;
  color: var(--color-primary-dark);
}
.review-section-count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.btn-edit {
  background: none;
  border: none;
  color: var(--color-accent);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background 150ms ease;
}
.btn-edit:hover {
  background: var(--color-bg-subtle);
  color: var(--color-accent-hover);
}
.btn-edit:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.review-items {
  padding: 0 1.5rem 1.25rem;
}
.review-item {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-bg-subtle);
  font-size: 0.9rem;
}
.review-item:last-child {
  border-bottom: none;
}
.review-item-num {
  font-weight: 600;
  color: var(--color-primary-dark);
  flex-shrink: 0;
  width: 2rem;
}
.review-item-text {
  flex: 1;
  color: var(--color-text);
}
.review-item-value {
  font-weight: 600;
  color: var(--color-primary-dark);
  flex-shrink: 0;
  text-align: right;
}
.review-item-value.unanswered {
  color: var(--color-accent);
}

/* =========================
   RESULTS SCREEN
   ========================= */

.results-screen h2 {
  font-size: 1.75rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}
.results-intro {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 560px;
}

.chart-container {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 2.5rem;
  width: 100%;
  max-width: 500px;
  height: 500px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  box-sizing: border-box;
}

/* Chart.js Fallback Bars */
.chart-fallback {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.fallback-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.fallback-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  min-width: 120px;
  text-align: right;
}
.fallback-track {
  flex: 1;
  height: 20px;
  background: var(--color-bg-subtle);
  border-radius: 10px;
  overflow: hidden;
}
.fallback-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 10px;
  transition: width 600ms ease;
}
.fallback-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  min-width: 2.5rem;
}

/* Subscale Cards */
.subscale-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.subscale-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.subscale-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.75rem;
}
.subscale-card-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}
.subscale-card-score {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.score-bar-container {
  margin-bottom: 0.75rem;
}
.score-bar {
  height: 8px;
  background: var(--color-bg-subtle);
  border-radius: 4px;
  overflow: hidden;
}
.score-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 600ms ease;
}
.score-bar-fill.low { background: #D4A574; }
.score-bar-fill.moderate { background: var(--color-primary-light); }
.score-bar-fill.high { background: var(--color-primary); }

.score-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.interpretation-badge {
  display: inline-block;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.interpretation-badge.low {
  background: #FDF0E6;
  color: var(--color-accent);
}
.interpretation-badge.moderate {
  background: #ECF4EF;
  color: var(--color-primary-dark);
}
.interpretation-badge.high {
  background: #D8EDE2;
  color: #2A5E42;
}

.subscale-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.results-note {
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}
.results-note p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.results-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}
.results-actions .btn svg {
  flex-shrink: 0;
}

/* =========================
   RESPONSIVE
   ========================= */

@media (max-width: 768px) {
  #app {
    padding: 1.5rem;
  }
  .welcome-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  #app {
    padding: 1.25rem;
  }
  .welcome-screen {
    min-height: 70vh;
  }
  .welcome-title {
    font-size: 2rem;
  }
  .welcome-subtitle {
    font-size: 0.95rem;
  }

  /* Compact scale on mobile */
  .scale-bookend {
    display: none;
  }
  .scale-row {
    gap: 0.15rem;
  }
  .scale-option {
    padding: 0.25rem 0.3rem;
    min-width: 40px;
  }
  .scale-circle {
    width: 28px;
    height: 28px;
  }
  .scale-label {
    display: none;
  }

  .scale-preview-row {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .scale-preview-item {
    min-width: calc(33% - 0.75rem);
  }

  .question {
    padding: 1rem;
  }

  .btn {
    padding: 0.65rem 1.25rem;
    font-size: 0.9rem;
  }
  .btn-large {
    padding: 0.85rem 2rem;
  }

  .review-item {
    flex-wrap: wrap;
  }
  .review-item-value {
    width: 100%;
    text-align: left;
    padding-left: 2rem;
  }

  .fallback-label {
    min-width: 80px;
    font-size: 0.75rem;
  }

  .results-actions {
    flex-direction: column;
  }
  .results-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .chart-container {
    padding: 1rem;
  }
}

@media (min-width: 700px) {
  .subscale-cards {
    grid-template-columns: 1fr 1fr;
  }
}

/* =========================
   REDUCED MOTION
   ========================= */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0ms !important;
  }
  html {
    scroll-behavior: auto;
  }
  .breathing-circle {
    animation: none;
    opacity: 0.3;
  }
}

/* =========================
   PRINT STYLES
   ========================= */

@media print {
  body {
    background: #fff;
    font-size: 12pt;
    color: #000;
  }

  #app {
    max-width: none;
    padding: 0;
  }

  .skip-link,
  .nav-buttons,
  .results-actions,
  .progress-container,
  .breathing-circle-container {
    display: none !important;
  }

  .screen {
    padding-bottom: 0;
  }

  .results-screen h2 {
    color: #000;
    margin-bottom: 0.5rem;
  }

  .chart-container {
    box-shadow: none;
    border: 1px solid #ccc;
    max-width: 400px;
    page-break-inside: avoid;
  }

  .subscale-cards {
    grid-template-columns: 1fr;
  }

  .subscale-card {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }

  .results-note {
    background: #f5f5f5;
    border: 1px solid #ddd;
  }

  .interpretation-badge {
    border: 1px solid currentColor;
  }

  @page {
    margin: 1.5cm;
  }
}