/*
 * AiQaSoutra widget styles — Phase 7
 * BEM-lite naming: .aqs-[block] / .aqs-[block]--[modifier] / .aqs-[block]__[element]
 * Design tokens via CSS custom properties so Joomla templates can override them.
 */

/* ── Root container & design tokens ──────────────────────────────────────── */

.aiqasoutra-widget {
  /* Light-mode palette */
  --aqs-primary:       #2563eb;
  --aqs-primary-dark:  #1d4ed8;
  --aqs-danger:        #dc2626;
  --aqs-bg:            #ffffff;
  --aqs-surface:       #f8fafc;
  --aqs-border:        #e2e8f0;
  --aqs-text:          #1e293b;
  --aqs-muted:         #64748b;
  --aqs-user-bg:       #eff6ff;
  --aqs-user-border:   #bfdbfe;
  --aqs-ai-bg:         #f0fdf4;
  --aqs-ai-border:     #bbf7d0;
  --aqs-radius:        0.5rem;

  font-family: inherit;
  color: var(--aqs-text);
  margin: 2rem 0;
}

@media (prefers-color-scheme: dark) {
  .aiqasoutra-widget {
    --aqs-bg:           #1e293b;
    --aqs-surface:      #0f172a;
    --aqs-border:       #334155;
    --aqs-text:         #f1f5f9;
    --aqs-muted:        #94a3b8;
    --aqs-user-bg:      #1e3358;
    --aqs-user-border:  #3b82f6;
    --aqs-ai-bg:        #0d2e1a;
    --aqs-ai-border:    #22c55e;
  }
  .aqs-processing { background: var(--aqs-bg); border-radius: var(--aqs-radius); }
}

/* ── Card wrapper ─────────────────────────────────────────────────────────── */

.aqs-widget {
  background:    var(--aqs-bg);
  border:        1px solid var(--aqs-border);
  border-radius: var(--aqs-radius);
  padding:       1.25rem;
  display:       flex;
  flex-direction: column;
  gap:           1rem;
}

/* ── Header ───────────────────────────────────────────────────────────────── */

.aqs-header {
  display:        flex;
  align-items:    center;
  flex-wrap:      wrap;
  gap:            0.5rem;
  border-bottom:  1px solid var(--aqs-border);
  padding-bottom: 0.75rem;
}

.aqs-header__icon  { color: var(--aqs-primary); font-size: 1rem; }
.aqs-header__title { margin: 0; font-size: 1rem; font-weight: 600; }

.aqs-help-btn {
  margin-left:   auto;
  width:         1.35rem;
  height:        1.35rem;
  border-radius: 50%;
  border:        1px solid var(--aqs-border);
  background:    var(--aqs-surface);
  color:         var(--aqs-muted);
  font-size:     0.7rem;
  font-weight:   700;
  cursor:        pointer;
  line-height:   1;
  padding:       0;
  flex-shrink:   0;
  transition:    border-color 0.15s, color 0.15s;
}
.aqs-help-btn:hover,
.aqs-help-btn:focus-visible,
.aqs-help-btn[aria-expanded="true"] {
  border-color: var(--aqs-primary);
  color:        var(--aqs-primary);
  outline:      none;
}

.aqs-help-panel {
  flex-basis:    100%;
  margin-top:    0.4rem;
  padding:       0.6rem 0.75rem;
  background:    var(--aqs-surface);
  border-left:   3px solid var(--aqs-primary);
  border-radius: 0 var(--aqs-radius) var(--aqs-radius) 0;
}

.aqs-help-list {
  margin:     0;
  padding:    0;
  list-style: none;
  display:    flex;
  flex-direction: column;
  gap:        0.3rem;
  font-size:  0.8rem;
  color:      var(--aqs-muted);
}

.aqs-help-list strong {
  color:       var(--aqs-text);
  font-weight: 600;
}

.aqs-help-intro {
  margin:      0 0 0.5rem;
  font-size:   0.8rem;
  color:       var(--aqs-muted);
  font-style:  italic;
}

/* ── First-visit hint ─────────────────────────────────────────────────────── */

.aqs-hint {
  margin:        0;
  font-size:     0.85rem;
  color:         var(--aqs-muted);
  background:    var(--aqs-surface);
  border-left:   3px solid var(--aqs-primary);
  padding:       0.5rem 0.75rem;
  border-radius: 0 var(--aqs-radius) var(--aqs-radius) 0;
}

/* ── Suggestion chips ─────────────────────────────────────────────────────── */

.aqs-suggestions {
  display:   flex;
  flex-wrap: wrap;
  gap:       0.4rem;
}

.aqs-chip {
  background:    var(--aqs-surface);
  border:        1px solid var(--aqs-border);
  border-radius: 1rem;
  padding:       0.3rem 0.75rem;
  font-size:     0.8rem;
  color:         var(--aqs-text);
  cursor:        pointer;
  white-space:   nowrap;
  font-family:   inherit;
  transition:    background 0.15s, border-color 0.15s;
}
.aqs-chip:hover,
.aqs-chip:focus-visible {
  background:    var(--aqs-user-bg);
  border-color:  var(--aqs-primary);
  outline:       none;
}

/* ── Form ─────────────────────────────────────────────────────────────────── */

.aqs-form {
  display:        flex;
  flex-direction: column;
  gap:            0.4rem;
}

.aqs-form__label {
  font-size:   0.85rem;
  font-weight: 500;
  color:       var(--aqs-muted);
}

.aqs-form__textarea {
  width:       100%;
  box-sizing:  border-box;
  padding:     0.6rem 0.75rem;
  border:      1px solid var(--aqs-border);
  border-radius: var(--aqs-radius);
  background:  var(--aqs-bg);
  color:       var(--aqs-text);
  font-family: inherit;
  font-size:   0.95rem;
  resize:      vertical;
  min-height:  4rem;
  transition:  border-color 0.15s, box-shadow 0.15s;
}
.aqs-form__textarea:focus {
  outline:    none;
  border-color: var(--aqs-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.aqs-form__textarea::placeholder { color: var(--aqs-muted); opacity: 0.8; }

/* ── Character counter ────────────────────────────────────────────────────── */

.aqs-counter {
  font-size:  0.75rem;
  color:      var(--aqs-muted);
  text-align: right;
}
.aqs-counter--warn { color: #d97706; font-weight: 600; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.aqs-btn {
  display:        inline-flex;
  align-items:    center;
  justify-content: center;
  padding:        0.5rem 1.1rem;
  border-radius:  var(--aqs-radius);
  font-size:      0.9rem;
  font-weight:    500;
  cursor:         pointer;
  border:         1px solid transparent;
  font-family:    inherit;
  transition:     background 0.15s, color 0.15s, border-color 0.15s;
}
.aqs-btn:focus-visible { outline: 2px solid var(--aqs-primary); outline-offset: 2px; }
.aqs-btn:disabled      { opacity: 0.6; cursor: not-allowed; }

.aqs-btn--primary {
  background: var(--aqs-primary);
  color:      #ffffff;
  align-self: flex-start;
}
.aqs-btn--primary:hover:not(:disabled) { background: var(--aqs-primary-dark); }

.aqs-btn--secondary {
  background:   transparent;
  border-color: var(--aqs-border);
  color:        var(--aqs-text);
}
.aqs-btn--secondary:hover:not(:disabled) { background: var(--aqs-surface); }

.aqs-btn--ghost {
  background: transparent;
  color:      var(--aqs-muted);
  font-size:  0.82rem;
  padding:    0.3rem 0.5rem;
}
.aqs-btn--ghost:hover:not(:disabled) { color: var(--aqs-text); }

.aqs-btn--danger {
  background:   transparent;
  border-color: var(--aqs-danger);
  color:        var(--aqs-danger);
}
.aqs-btn--danger:hover:not(:disabled) { background: #fee2e2; }

.aqs-btn--sm { font-size: 0.8rem; padding: 0.3rem 0.7rem; }

.aqs-btn-row {
  display:   flex;
  gap:       0.5rem;
  flex-wrap: wrap;
}

/* ── Exchange (messages) ──────────────────────────────────────────────────── */

.aqs-exchange {
  display:        flex;
  flex-direction: column;
  gap:            0.75rem;
}

.aqs-message {
  display:        flex;
  flex-direction: column;
  gap:            0.35rem;
  padding:        0.75rem;
  border-radius:  var(--aqs-radius);
  border:         1px solid transparent;
}
.aqs-message--user      { background: var(--aqs-user-bg); border-color: var(--aqs-user-border); }
.aqs-message--assistant { background: var(--aqs-ai-bg);   border-color: var(--aqs-ai-border); }
.aqs-message--history   { opacity: 0.85; }

.aqs-message__row {
  display:     flex;
  align-items: center;
  gap:         0.5rem;
}

.aqs-message__label {
  font-size:      0.72rem;
  font-weight:    600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color:          var(--aqs-muted);
}

.aqs-message__body {
  font-size: 0.95rem;
  color:     var(--aqs-text);
  margin:    0;
}

/* ── Prose (markdown output) ──────────────────────────────────────────────── */

.aqs-prose { line-height: 1.65; }
.aqs-prose p                   { margin: 0.5em 0; }
.aqs-prose p:first-child       { margin-top: 0; }
.aqs-prose p:last-child        { margin-bottom: 0; }
.aqs-prose h1, .aqs-prose h2,
.aqs-prose h3, .aqs-prose h4   { margin: 0.75em 0 0.35em; font-weight: 600; line-height: 1.3; }
.aqs-prose h1 { font-size: 1.2em; }
.aqs-prose h2 { font-size: 1.1em; }
.aqs-prose h3 { font-size: 1.0em; }
.aqs-prose ul, .aqs-prose ol   { margin: 0.5em 0; padding-left: 1.5em; }
.aqs-prose li                  { margin: 0.25em 0; }
.aqs-prose strong              { font-weight: 600; }
.aqs-prose em                  { font-style: italic; }
.aqs-prose code {
  background:    var(--aqs-surface);
  border:        1px solid var(--aqs-border);
  border-radius: 3px;
  padding:       0.1em 0.35em;
  font-size:     0.88em;
}
.aqs-prose pre {
  background:    var(--aqs-surface);
  border:        1px solid var(--aqs-border);
  border-radius: var(--aqs-radius);
  padding:       0.75rem;
  overflow-x:    auto;
  font-size:     0.88em;
  margin:        0.5em 0;
}
.aqs-prose pre code { background: none; border: none; padding: 0; }
.aqs-prose blockquote {
  border-left: 3px solid var(--aqs-primary);
  margin:      0.5em 0;
  padding:     0.25em 0.75em;
  color:       var(--aqs-muted);
}
.aqs-prose hr {
  border:     none;
  border-top: 1px solid var(--aqs-border);
  margin:     1em 0;
}
.aqs-prose table {
  border-collapse: collapse;
  width:           100%;
  font-size:       0.9em;
  margin:          0.5em 0;
}
.aqs-prose th, .aqs-prose td {
  border:  1px solid var(--aqs-border);
  padding: 0.4em 0.6em;
}
.aqs-prose th    { background: var(--aqs-surface); font-weight: 600; }

/* KaTeX — horizontal scroll for wide display math; suppress vertical scroll arrows */
.aqs-prose .katex         { font-size: 1.05em; }
.aqs-prose .katex-display { margin: 0.75em 0; overflow-x: auto; overflow-y: hidden; }

/* ── Badges ───────────────────────────────────────────────────────────────── */

.aqs-badge {
  display:        inline-block;
  font-size:      0.7rem;
  font-weight:    600;
  padding:        0.15rem 0.45rem;
  border-radius:  0.25rem;
  letter-spacing: 0.03em;
}
.aqs-badge--cached {
  background: #fef9c3;
  color:      #78350f;
}
@media (prefers-color-scheme: dark) {
  .aqs-badge--cached { background: #422006; color: #fde68a; }
}
.aqs-badge--model {
  background:   var(--aqs-surface);
  border:       1px solid var(--aqs-border);
  color:        var(--aqs-muted);
}

/* ── Sources ──────────────────────────────────────────────────────────────── */

.aqs-sources {
  display:     flex;
  align-items: center;
  flex-wrap:   wrap;
  gap:         0.35rem;
  margin-top:  0.5rem;
}
.aqs-sources__label { font-size: 0.78rem; color: var(--aqs-muted); }
.aqs-source-chip {
  display:       inline-block;
  background:    var(--aqs-surface);
  border:        1px solid var(--aqs-border);
  border-radius: 0.25rem;
  padding:       0.1rem 0.45rem;
  font-size:     0.78rem;
  color:         var(--aqs-muted);
}

/* ── Disclaimer ───────────────────────────────────────────────────────────── */

.aqs-disclaimer {
  margin:     0.35rem 0 0;
  font-size:  0.75rem;
  color:      var(--aqs-muted);
  font-style: italic;
}

/* ── Follow-up bar ────────────────────────────────────────────────────────── */

.aqs-followup {
  display:        flex;
  flex-direction: column;
  gap:            0.4rem;
  border-top:     1px solid var(--aqs-border);
  padding-top:    0.75rem;
}

/* ── History panel ────────────────────────────────────────────────────────── */

.aqs-history {
  border:        1px solid var(--aqs-border);
  border-radius: var(--aqs-radius);
  padding:       0.75rem;
  background:    var(--aqs-surface);
  display:       flex;
  flex-direction: column;
  gap:           0.75rem;
  max-height:    24rem;
  overflow-y:    auto;
}

/* ── Spinner ──────────────────────────────────────────────────────────────── */

.aqs-spinner {
  display:     flex;
  align-items: center;
  gap:         0.6rem;
  padding:     0.75rem 0;
  color:       var(--aqs-muted);
  font-size:   0.9rem;
}

.aqs-spinner__icon {
  display:       inline-block;
  width:         1.2em;
  height:        1.2em;
  border:        2px solid var(--aqs-border);
  border-top-color: var(--aqs-primary);
  border-radius: 50%;
  flex-shrink:   0;
  animation:     aqs-spin 0.75s linear infinite;
}
.aqs-spinner__icon--lg {
  width:        2rem;
  height:       2rem;
  border-width: 3px;
}

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

/* ── Processing screen ────────────────────────────────────────────────────── */

.aqs-processing {
  display:        flex;
  flex-direction: column;
  align-items:    center;
  gap:            0.5rem;
  padding:        1.5rem 1rem;
  text-align:     center;
}
.aqs-processing__msg      { margin: 0; font-weight: 500; }
.aqs-processing__hint,
.aqs-processing__countdown {
  margin:    0;
  font-size: 0.85rem;
  color:     var(--aqs-muted);
}

/* ── Error state ──────────────────────────────────────────────────────────── */

.aqs-error {
  display:       flex;
  align-items:   flex-start;
  gap:           0.5rem;
  padding:       0.75rem;
  background:    #fef2f2;
  border:        1px solid #fecaca;
  border-radius: var(--aqs-radius);
  color:         #991b1b;
  font-size:     0.9rem;
  margin-bottom: 0.5rem;
}
@media (prefers-color-scheme: dark) {
  .aqs-error { background: #2d0a0a; border-color: #7f1d1d; color: #fca5a5; }
  .aqs-btn--secondary { background: #1e293b; border-color: #334155; }
}
:root[data-bs-theme="dark"] .aqs-btn--secondary { background: #1e293b; border-color: #334155; }
.aqs-error__icon { flex-shrink: 0; }

/* ── Rate-limit screen ────────────────────────────────────────────────────── */

.aqs-rate-limit {
  display:        flex;
  flex-direction: column;
  align-items:    center;
  gap:            0.35rem;
  padding:        1.25rem 1rem;
  background:     #fffbeb;
  border:         1px solid #fde68a;
  border-radius:  var(--aqs-radius);
  text-align:     center;
  color:          #92400e;
}
@media (prefers-color-scheme: dark) {
  .aqs-rate-limit { background: #2d1a00; border-color: #b45309; color: #fcd34d; }
}
.aqs-rate-limit__icon      { font-size: 1.5rem; }
.aqs-rate-limit__msg       { margin: 0; font-size: 0.9rem; font-weight: 500; }
.aqs-rate-limit__countdown { margin: 0; font-size: 0.85rem; }

/* ── Responsive tweaks ────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .aqs-widget    { padding: 0.9rem; }
  .aqs-chip      { font-size: 0.75rem; padding: 0.25rem 0.6rem; }
  .aqs-btn-row   { flex-direction: column; }
  .aqs-btn--primary { align-self: stretch; justify-content: center; }
}

/* ── Report footer ────────────────────────────────────────────────────────── */

.aqs-footer {
  padding: 0.5rem 0.75rem 0.625rem;
  border-top: 1px solid var(--aqs-border);
  display: flex;
  justify-content: flex-end;
}

.aqs-report-link {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: 0.7rem;
  color: var(--aqs-muted);
  transition: color 0.15s;
}

.aqs-report-link:hover,
.aqs-report-link:focus-visible {
  color: var(--aqs-primary);
  outline: none;
}