/* IrishTaxTools Design System v1.0 — Sprint 18 Polish
   Global design tokens, states, animations, mobile fixes, accessibility.
   Loaded on all pages. Must not break any existing styles.
*/

/* ── Design Tokens ───────────────────────────────────────────────────────── */
:root {
  --itt-green:        #1a6b3a;
  --itt-green-dark:   #15522e;
  --itt-green-light:  #f0fdf4;
  --itt-green-border: #bbf7d0;
  --itt-red:          #dc2626;
  --itt-red-light:    #fff5f5;
  --itt-border:       #e2e8f0;
  --itt-text:         #111827;
  --itt-text-muted:   #6b7280;
  --itt-bg-surface:   #f9fafb;
  --itt-radius:       8px;
  --itt-radius-lg:    12px;
  --itt-shadow-sm:    0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --itt-shadow:       0 4px 14px rgba(0,0,0,0.08);
  --itt-t:            0.15s ease;
  --itt-t-slow:       0.28s ease;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.prc-btn {
  transition: background-color var(--itt-t), transform var(--itt-t), box-shadow var(--itt-t);
  box-shadow: var(--itt-shadow-sm);
}
.prc-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--itt-shadow);
}
.prc-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--itt-shadow-sm);
}
.prc-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.prc-btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.prc-btn--loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin: -8px 0 0 -8px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: itt-spin 0.7s linear infinite;
}
@keyframes itt-spin { to { transform: rotate(360deg); } }
.ws-cta-btn {
  transition: background-color var(--itt-t), transform var(--itt-t);
}
.ws-cta-btn:hover {
  transform: translateY(-1px);
  opacity: 0.92;
}

/* ── Focus Accessibility (keyboard-only rings) ───────────────────────────── */
:focus-visible {
  outline: 3px solid var(--itt-green);
  outline-offset: 2px;
}
:focus:not(:focus-visible) {
  outline: none;
}
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--itt-green);
  outline-offset: 0;
}
.ws-tab:focus-visible {
  outline: 3px solid var(--itt-green);
  outline-offset: -2px;
  border-radius: 4px;
}
button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--itt-green);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Form Validation States ──────────────────────────────────────────────── */
.itt-field-error input,
.itt-field-error select {
  border-color: var(--itt-red) !important;
  background-color: var(--itt-red-light) !important;
}
.itt-error-msg {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--itt-red);
  font-size: .72rem;
  font-weight: 600;
  margin-top: 3px;
}
.itt-error-msg::before {
  content: '!';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  min-width: 14px;
  background: var(--itt-red);
  color: #fff;
  border-radius: 50%;
  font-size: .6rem;
  font-weight: 900;
}

/* ── Toast Notification ──────────────────────────────────────────────────── */
.itt-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--itt-green);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--itt-radius);
  font-size: .85rem;
  font-weight: 600;
  box-shadow: var(--itt-shadow);
  z-index: 99999;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: none;
  max-width: calc(100vw - 40px);
}
.itt-toast--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Copy Link Button ─────────────────────────────────────────────────────── */
.itt-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--itt-bg-surface);
  border: 1.5px solid var(--itt-border);
  border-radius: var(--itt-radius);
  font-size: .8rem;
  font-weight: 600;
  color: var(--itt-text-muted);
  cursor: pointer;
  transition: all var(--itt-t);
  margin-bottom: 16px;
}
.itt-copy-btn:hover { border-color: var(--itt-green); color: var(--itt-green); }
.itt-copy-btn--copied { background: var(--itt-green-light); border-color: var(--itt-green); color: var(--itt-green); }

/* ── Result Section Animations ───────────────────────────────────────────── */
.itt-animate-in {
  animation: itt-fadeup var(--itt-t-slow) ease both;
}
@keyframes itt-fadeup {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── FAQ Accordion Polish ─────────────────────────────────────────────────── */
.itt-faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: var(--itt-bg-surface);
  border: 1.5px solid var(--itt-border);
  border-radius: var(--itt-radius);
  padding: 12px 16px;
  text-align: left;
  font-size: .9rem;
  font-weight: 600;
  color: var(--itt-text);
  cursor: pointer;
  margin-bottom: 4px;
  transition: border-color var(--itt-t), background-color var(--itt-t);
}
.itt-faq-q:hover { border-color: var(--itt-green); background: var(--itt-green-light); }
.itt-faq-q::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--itt-green);
  transition: transform var(--itt-t);
  flex-shrink: 0;
  margin-left: 12px;
  line-height: 1;
}
.itt-faq-q[aria-expanded="true"]::after { transform: rotate(45deg); }
.itt-faq-a {
  background: var(--itt-bg-surface);
  border: 1px solid var(--itt-border);
  border-top: none;
  border-radius: 0 0 var(--itt-radius) var(--itt-radius);
  padding: 14px 16px;
  margin-bottom: 12px;
}
.itt-faq-a p { margin: 0; font-size: .9rem; line-height: 1.7; color: #374151; }

/* ── Empty / Loading States ──────────────────────────────────────────────── */
.itt-empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--itt-text-muted);
  font-size: .9rem;
}
.itt-loading-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--itt-green-border);
  border-top-color: var(--itt-green);
  border-radius: 50%;
  animation: itt-spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

/* ── Mobile — Overflow Fixes ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  body { overflow-x: hidden; }
  .bea-table-wrap,
  .ctp-breakdown,
  .ws-breakdown { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .bea-table,
  .bea-result-table { min-width: 520px; }
  .ws-report-table { min-width: 380px; }
}
@media (max-width: 640px) {
  .ctp-grid          { grid-template-columns: 1fr !important; }
  .ws-profile-grid   { grid-template-columns: 1fr !important; }
  .ws-recs           { grid-template-columns: 1fr !important; }
  .ctp-kpis          { grid-template-columns: 1fr 1fr !important; }
  .ws-kpis           { grid-template-columns: 1fr 1fr !important; }
  .biz-tools-grid    { grid-template-columns: 1fr !important; }
  .ipc-mode-row      { flex-direction: column; align-items: flex-start; gap: 8px; }
  .cfp-month-row     { grid-template-columns: repeat(4, 1fr) !important; }
  .ws-tab-bar        { gap: 0; }
  .ws-tab            { padding: 8px 12px; font-size: .82rem; }
  .ws-tl-item        { flex-direction: column; gap: 4px; }
  .ws-tl-date        { min-width: 0 !important; }
  .ws-hero h1        { font-size: 1.6rem !important; }
  .ctp-hero h1       { font-size: 1.6rem !important; }
  .prc-btn           { width: 100%; text-align: center; }
  .ws-profile-footer { flex-direction: column; align-items: stretch; }
  .sw-validator-grid { grid-template-columns: 1fr !important; }
}

/* ── Print ───────────────────────────────────────────────────────────────── */
@media print {
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    color-adjust: exact !important;
  }
  .ws-breakdown,
  .ctp-breakdown,
  .ws-kpis,
  .ctp-kpis,
  .ws-kpi,
  .ctp-kpi { break-inside: avoid; page-break-inside: avoid; }
  h2, h3   { break-after: avoid; page-break-after: avoid; }
  .prc-cta,
  .ws-cta-strip,
  .ws-tab-bar,
  .ws-profile,
  .biz-hero,
  .itt-copy-btn,
  .itt-toast,
  .ws-recs,
  header, footer, nav,
  .cookie-notice,
  [class*="cookie"],
  [id*="cookie"] { display: none !important; }
  body { font-size: 11pt; line-height: 1.5; }
  a { color: inherit !important; text-decoration: none !important; }
}

/* ── Accessibility — Skip Link ───────────────────────────────────────────── */
.itt-skip-link {
  position: absolute;
  top: -100%;
  left: 8px;
  background: var(--itt-green);
  color: #fff;
  padding: 8px 16px;
  border-radius: 0 0 var(--itt-radius) var(--itt-radius);
  font-weight: 700;
  font-size: .875rem;
  z-index: 100000;
  transition: top 0.1s;
  text-decoration: none;
}
.itt-skip-link:focus { top: 0; }

/* ── High Contrast Support ───────────────────────────────────────────────── */
@media (forced-colors: active) {
  .prc-btn { border: 2px solid ButtonText; }
  .ws-kpi  { border: 2px solid CanvasText; }
}

/* ── Reduce Motion ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}