@import "tailwindcss";

/* ── Tokens ── */
:root {
  --color-bg: #f9fafb;
  --color-surface: #ffffff;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-primary: #1d4ed8;
  --color-primary-hover: #1e40af;
  --color-primary-light: #dbeafe;
  --color-accent: #2563eb;
  --color-error: #b91c1c;
  --color-error-bg: #fef2f2;
  --color-border: #d1d5db;
  --color-border-focus: #2563eb;
  --color-sensitive: #fef3c7;
  --color-sensitive-border: #f59e0b;
  --radius: 8px;
  --shadow-card: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 4px;
  z-index: 9999;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { left: 4px; }

/* ── 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;
}

/* ── Survey wrapper ── */
.survey-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 80px;
}

/* ── Survey header ── */
.survey-header {
  padding: 32px 0 16px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 16px;
}
.survey-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--color-text);
}
.survey-anon-note {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ── Progress bar ── */
.survey-progress-sticky {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
}
.progress-bar-container {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 8px;
  position: relative;
}
.progress-bar-fill {
  height: 8px;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 0.3s ease;
  flex-shrink: 0;
}
.progress-bar-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  position: absolute;
  right: 0;
  top: -18px;
}

/* ── Sections ── */
.survey-section {
  margin-top: 32px;
}
.section-header { margin-bottom: 16px; }
.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 6px;
  padding: 10px 14px;
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-primary-hover);
}
.section-sensitive-note {
  font-size: 0.8125rem;
  color: #92400e;
  background: var(--color-sensitive);
  border: 1px solid var(--color-sensitive-border);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin: 0;
}

/* ── Question wrapper ── */
.question-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
}

/* ── Fieldset (radio/checkbox/rating) ── */
.question-fieldset {
  border: none;
  padding: 0;
  margin: 0;
  min-width: 0;
}
.question-legend {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
  line-height: 1.4;
}
.required-mark { color: var(--color-error); }

/* ── Options list ── */
.options-list { display: flex; flex-direction: column; gap: 8px; }
.option-item {}
.option-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  line-height: 1.4;
}
.option-label:hover { border-color: var(--color-accent); background: var(--color-primary-light); }
.option-label:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 500;
}
.option-disabled { opacity: 0.45; cursor: not-allowed; }
.option-disabled:hover { border-color: var(--color-border); background: transparent; }
.option-input {
  margin-top: 2px;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.option-input:disabled { cursor: not-allowed; }
.option-text { flex: 1; }

/* ── Max select hint ── */
.max-select-hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0 0 10px;
}

/* ── Rating ── */
.rating-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.rating-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}
.rating-steps {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.rating-step { display: flex; }
.rating-input { /* hidden via sr-only */ }
.rating-dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
  color: var(--color-text);
}
.rating-step:has(input:checked) .rating-dot {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.rating-step:has(input:focus-visible) .rating-dot {
  outline: 3px solid var(--color-border-focus);
  outline-offset: 2px;
}
.rating-step:hover .rating-dot { border-color: var(--color-accent); background: var(--color-primary-light); }
.rating-step:has(input:checked):hover .rating-dot { background: var(--color-primary-hover); border-color: var(--color-primary-hover); color: #fff; }

/* ── Textarea ── */
.text-area {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.5;
  resize: vertical;
  transition: border-color 0.15s;
  color: var(--color-text);
  background: var(--color-surface);
}
.text-area:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

/* ── Field error ── */
.field-error {
  margin: 6px 0 0;
  font-size: 0.875rem;
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: 4px;
}
.field-error::before { content: '⚠'; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  min-height: 44px;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 3px solid var(--color-border-focus);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary-light); }

/* ── Form footer ── */
.form-footer {
  padding: 24px 0 16px;
  display: flex;
  justify-content: flex-end;
}

/* ── Summary ── */
.summary-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 80px;
}
.summary-header { margin-bottom: 28px; }
.summary-title { font-size: 1.5rem; font-weight: 700; margin: 0 0 8px; }
.summary-subtitle { color: var(--color-text-muted); margin: 0 0 12px; }
.summary-note {
  font-size: 0.875rem;
  background: var(--color-sensitive);
  border: 1px solid var(--color-sensitive-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin: 0;
}
.summary-section-heading {
  font-size: 1rem;
  font-weight: 700;
  padding: 8px 12px;
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0 8px;
  color: var(--color-primary-hover);
}
.summary-list { margin: 0; padding: 0; }
.summary-item {
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}
.summary-question {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.summary-code {
  font-weight: 700;
  color: var(--color-primary);
  margin-right: 4px;
}
.summary-answer {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 0;
}
.summary-actions {
  padding-top: 28px;
  display: flex;
  justify-content: flex-start;
}

/* ── No survey state ── */
.no-survey {
  max-width: 480px;
  margin: 80px auto;
  text-align: center;
  padding: 0 16px;
}
.no-survey-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.no-survey-hint {
  font-size: 0.875rem;
  background: #f3f4f6;
  border-radius: var(--radius);
  padding: 12px 16px;
  text-align: left;
  font-family: 'Courier New', monospace;
  margin-top: 16px;
}

/* ── Loading skeleton ── */
.loading-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px;
}
.skeleton { background: #e5e7eb; border-radius: var(--radius); animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ── Focus visible (global override) ── */
:focus-visible {
  outline: 3px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* ── Mobile-first responsive ── */
@media (max-width: 480px) {
  .survey-title { font-size: 1.25rem; }
  .rating-wrapper { flex-direction: column; align-items: flex-start; }
  .form-footer { justify-content: stretch; }
  .btn { width: 100%; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
