/* ============================================================================
   AI MODE (chat.theme.php)
   Loaded after app.css. Reuses its tokens (--font-sans, --radius*, --shadow-*,
   --accent, --ease) and the AI overview's blue-violet-teal identity so the
   chat reads as the same product as the overview box on the results pages.
   Every rule is scoped under .aic-* so nothing here leaks into other pages.
   ========================================================================== */

:root{
  --aic-grad: linear-gradient(120deg,#4c8dfb,#845ef7 55%,#1abc9c);
  --aic-grad-soft: linear-gradient(135deg, rgba(76,141,251,.14), rgba(132,94,247,.14));
  --aic-ink:#0e1116;
  --aic-text:#1f2937;
  --aic-muted:#5b6472;
  --aic-faint:#8b93a1;
  --aic-line:#e7eaf0;
  --aic-card:#ffffff;
  --aic-violet:#845ef7;
  --aic-violet-ink:#4c3fb3;
  --aic-blue:#0b5ed7;
  --aic-bg:#f7f9fc;
  --aic-header-h:84px;
}

/* --- Page frame ------------------------------------------------------------ */
body.aic-page{
  background-image:
    radial-gradient(900px 420px at 50% -140px, rgba(132,94,247,.11), transparent 70%),
    radial-gradient(700px 360px at 85% 12%, rgba(26,188,156,.07), transparent 70%);
  background-repeat:no-repeat;
}
.aic-content{ display:flex; flex-direction:column; min-height:100%; }
.aic-main{
  flex:1 1 auto;
  display:flex; flex-direction:column;
  padding:0 0 0;
}
.aic-wrap{
  width:100%; max-width:880px;
  margin:0 auto; padding:0 18px;
}
.aic-main > .aic-wrap{ flex:1 1 auto; }

/* --- Hero (empty state) ------------------------------------------------------ */
.aic-hero{ text-align:center; padding:54px 0 26px; }
.aic-hero.is-hidden{ display:none; }
.aic-orb{
  width:66px; height:66px; border-radius:50%;
  background:var(--aic-grad); color:#fff;
  display:grid; place-items:center; margin:0 auto 16px;
  box-shadow:0 14px 34px -10px rgba(132,94,247,.6), 0 0 0 8px rgba(132,94,247,.08);
  animation:aic-float 5.5s ease-in-out infinite;
}
.aic-orb svg{ width:32px; height:32px; }
.aic-kicker{
  font-size:11.5px; font-weight:700; letter-spacing:.16em; text-transform:uppercase;
  color:var(--aic-violet); margin-bottom:6px;
}
.aic-hero-title{
  font-size:clamp(26px, 3.6vw, 38px); font-weight:700; letter-spacing:-.022em;
  line-height:1.15; color:var(--aic-ink); margin:0 0 12px;
}
.aic-hero-intro{
  color:var(--aic-muted); font-size:15.5px; line-height:1.62;
  max-width:62ch; margin:0 auto 28px;
}
.aic-topic-hero{
  display:flex; flex-direction:column; align-items:center; gap:4px;
  margin:-10px 0 24px;
}
.aic-topic-label{
  display:inline-flex; align-items:center; gap:6px;
  font-size:11px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--aic-faint);
}
.aic-topic-label .ico{ width:13px; height:13px; }
.aic-topic-name{ font-weight:650; font-size:15.5px; color:var(--aic-violet-ink); text-decoration:none; }
.aic-topic-name:hover{ text-decoration:underline; }
.aic-topic-desc{ color:var(--aic-muted); font-size:13.5px; max-width:64ch; line-height:1.5; }

.aic-starters{
  display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:10px;
  text-align:left; margin:0 auto; max-width:760px;
}
.aic-starter{
  display:flex; align-items:center; gap:12px;
  background:var(--aic-card); border:1px solid var(--aic-line); border-radius:14px;
  padding:12px 12px 12px 12px; font:inherit; font-size:14px; line-height:1.4; color:var(--aic-ink);
  text-align:left; cursor:pointer; box-shadow:var(--shadow-1,0 1px 2px rgba(16,24,40,.05));
  transition:box-shadow .18s var(--ease,ease), border-color .18s ease, transform .12s ease;
  animation:aic-rise .5s var(--ease,ease) both;
  animation-delay:calc(var(--i, 0) * 55ms + 80ms);
}
.aic-starter:hover{ border-color:#c9d3e6; box-shadow:var(--shadow-2,0 6px 20px rgba(16,24,40,.09)); transform:translateY(-1px); }
.aic-starter:active{ transform:translateY(0); }
.aic-starter:focus-visible{ outline:3px solid rgba(132,94,247,.35); outline-offset:2px; }
.aic-starter-ico{
  width:34px; height:34px; border-radius:10px; flex:0 0 auto;
  background:var(--aic-grad-soft); color:#5b6cf5;
  display:grid; place-items:center;
}
.aic-starter-ico .ico{ width:17px; height:17px; }
.aic-starter-text{ flex:1 1 auto; min-width:0; }
.aic-starter-go{ color:#a3adba; flex:0 0 auto; }
.aic-starter-go .ico{ width:14px; height:14px; }
.aic-starter:hover .aic-starter-go{ color:var(--aic-violet); }

.aic-unavailable{ text-align:center; padding:64px 0 32px; color:var(--aic-muted); }
.aic-unavailable .aic-hero-title{ font-size:24px; margin-top:14px; }
.aic-unavailable p{ max-width:60ch; margin:0 auto; }
.aic-unavailable code{ background:rgba(16,24,40,.06); padding:.05em .4em; border-radius:5px; }

/* --- Thread ----------------------------------------------------------------- */
.aic-thread{ display:flex; flex-direction:column; gap:24px; padding:22px 0 10px; }
.aic-thread:empty{ padding:0; }
.aic-thread-end{ height:1px; }
.aic-turn{ animation:aic-rise .38s var(--ease,ease) both; scroll-margin-top:calc(var(--aic-header-h) + 10px); }

.aic-turn-user{ display:flex; justify-content:flex-end; }
.aic-user-bubble{
  max-width:82%;
  background:linear-gradient(135deg,#e9eefc,#eef2ff);
  color:var(--aic-text); border:1px solid #dfe6fb;
  border-radius:20px 20px 6px 20px; padding:11px 16px;
  font-size:15.5px; line-height:1.5; white-space:pre-wrap; overflow-wrap:anywhere;
  box-shadow:0 1px 2px rgba(16,24,40,.04);
}

.aic-turn-ai{
  position:relative;
  background:var(--aic-card); border:1px solid var(--aic-line); border-radius:18px;
  padding:16px 20px 14px; box-shadow:var(--shadow-1,0 1px 2px rgba(16,24,40,.05));
}
.aic-turn-ai::before{
  content:""; position:absolute; top:-1px; left:22px; right:22px; height:2px;
  background:var(--aic-grad); border-radius:0 0 3px 3px; opacity:.85;
}
.aic-ai-head{ display:flex; align-items:center; gap:10px; margin-bottom:10px; }
.aic-badge{
  display:inline-flex; align-items:center; gap:6px;
  background:var(--aic-grad); color:#fff;
  font-size:11px; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  padding:4px 10px; border-radius:999px; white-space:nowrap;
}
.aic-badge .ico{ width:12px; height:12px; }
.aic-badge-lg{ font-size:12.5px; padding:6px 14px; }
.aic-badge-lg .ico{ width:15px; height:15px; }
.aic-turn-ai.is-pending .aic-badge{ animation:aic-pulse 1.6s ease-in-out infinite; }
.aic-ai-meta{ margin-left:auto; font-size:12px; color:var(--aic-faint); white-space:nowrap; }

/* answer typography */
.aic-ai-body{ font-size:15.5px; line-height:1.68; color:var(--aic-text); overflow-wrap:break-word; }
.aic-ai-body > :first-child{ margin-top:0; }
.aic-ai-body > :last-child{ margin-bottom:0; }
.aic-ai-body p{ margin:0 0 .75rem; }
.aic-ai-body h3.aic-h{ font-size:17px; font-weight:650; letter-spacing:-.01em; margin:1.05rem 0 .4rem; color:var(--aic-ink); }
.aic-ai-body h4.aic-h{ font-size:15.5px; font-weight:650; margin:.9rem 0 .3rem; color:var(--aic-ink); }
.aic-ai-body ul, .aic-ai-body ol{ margin:.15rem 0 .8rem 1.3rem; padding:0; }
.aic-ai-body li{ margin:.22rem 0; }
.aic-ai-body li > ul, .aic-ai-body li > ol{ margin:.2rem 0 .25rem 1.1rem; }
.aic-ai-body ul{ list-style:disc; }
.aic-ai-body ul ul{ list-style:circle; }
.aic-ai-body strong{ font-weight:650; color:var(--aic-ink); }
.aic-ai-body em{ font-style:italic; }
.aic-ai-body del{ color:var(--aic-faint); }
.aic-ai-body code{
  background:rgba(16,24,40,.06); padding:.08em .4em; border-radius:5px; font-size:.9em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.aic-ai-body pre.aic-code{
  background:#0f172a; color:#e2e8f0; padding:12px 14px; border-radius:12px;
  overflow:auto; font-size:13px; line-height:1.55; margin:.4rem 0 .9rem;
}
.aic-ai-body pre.aic-code code{ background:transparent; padding:0; color:inherit; font-size:inherit; }
.aic-ai-body blockquote.aic-quote{
  border-left:3px solid var(--aic-violet); margin:.4rem 0 .9rem; padding:2px 0 2px 14px; color:#4b5563;
}
.aic-ai-body blockquote.aic-quote p:last-child{ margin-bottom:0; }
.aic-ai-body .aic-table-wrap{
  overflow-x:auto; margin:.4rem 0 .95rem;
  border:1px solid var(--aic-line); border-radius:12px; background:#fff;
}
.aic-ai-body table.aic-table{ width:100%; border-collapse:collapse; font-size:14px; margin:0; }
.aic-ai-body .aic-table th{
  background:#f5f7fb; text-align:left; font-weight:650; padding:9px 12px;
  border-bottom:1px solid var(--aic-line); white-space:nowrap; color:var(--aic-ink);
}
.aic-ai-body .aic-table td{ padding:8px 12px; border-bottom:1px solid #eef1f5; vertical-align:top; }
.aic-ai-body .aic-table tr:last-child td{ border-bottom:0; }
.aic-ai-body .aic-table tbody tr:nth-child(even) td{ background:#fbfcfe; }
.aic-ai-body hr.aic-hr{ border:0; border-top:1px solid var(--aic-line); margin:.9rem 0; }
.aic-ai-body a.aic-link{
  color:var(--aic-blue); text-decoration:underline;
  text-decoration-color:rgba(11,94,215,.35); text-underline-offset:2px;
  transition:text-decoration-color .15s ease;
}
.aic-ai-body a.aic-link:hover{ text-decoration-color:currentColor; }

/* streaming + thinking */
.aic-stream{ white-space:pre-wrap; }
.aic-stream-md > :last-child{ display:inline; }
.aic-stream-md .aic-stream-row{ font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:13px; color:var(--aic-muted); white-space:pre-wrap; }
.aic-stream-md a.aic-link{ color:var(--aic-blue); text-decoration:underline; text-decoration-color:rgba(11,94,215,.35); }
.aic-cursor{
  display:inline-block; width:8px; height:1.05em; margin-left:2px; vertical-align:-2px;
  background:var(--aic-grad); border-radius:2px; animation:aic-blink 1s steps(2) infinite;
}
.aic-thinking{ display:flex; flex-direction:column; gap:11px; padding:2px 0 4px; }
.aic-thinking-label{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:600; color:var(--aic-violet);
}
.aic-dots{ display:inline-flex; gap:3px; }
.aic-dots i{
  width:5px; height:5px; border-radius:50%; background:var(--aic-violet); opacity:.35;
  animation:aic-dot 1.2s ease-in-out infinite;
}
.aic-dots i:nth-child(2){ animation-delay:.15s; }
.aic-dots i:nth-child(3){ animation-delay:.3s; }
.aic-shimmer{
  height:12px; border-radius:6px;
  background:linear-gradient(90deg,#eef1f6 25%,#e3e9f1 45%,#eef1f6 65%);
  background-size:200% 100%; animation:aic-shimmer 1.2s linear infinite;
}

/* chips under an answer */
.aic-links, .aic-suggest{ display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.aic-chips-label{
  width:100%; font-size:11px; font-weight:700; letter-spacing:.12em; text-transform:uppercase;
  color:var(--aic-faint); margin-bottom:-2px;
}
.aic-chip{
  display:inline-flex; align-items:center; gap:7px;
  padding:6px 12px 6px 10px; border-radius:999px;
  background:#eef3f9; border:1px solid #dde6f0; color:var(--aic-blue);
  font:inherit; font-size:13px; line-height:1.3; text-decoration:none !important; cursor:pointer;
  max-width:100%; transition:background .15s ease, border-color .15s ease, transform .08s ease;
}
.aic-chip .ico{ width:14px; height:14px; flex:0 0 auto; }
.aic-chip span{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.aic-chip:hover{ background:#e2ebf5; }
.aic-chip:active{ transform:translateY(1px); }
.aic-chip-news{ background:#fff5e8; border-color:#fbe1bd; color:#b45309; }
.aic-chip-news:hover{ background:#ffedd5; }
.aic-chip-shopping{ background:#ecfdf5; border-color:#c7f0dd; color:#047857; }
.aic-chip-shopping:hover{ background:#d9f7ea; }
.aic-chip-topic{ background:#f3f0ff; border-color:#ddd5fb; color:var(--aic-violet-ink); }
.aic-chip-topic:hover{ background:#ebe5ff; }
.aic-suggest .aic-chip{ background:#fff; border-color:#d9d2fb; color:var(--aic-violet-ink); }
.aic-suggest .aic-chip:hover{ background:#f6f3ff; border-color:#c4b8f7; }

/* actions row */
.aic-actions{
  display:flex; flex-wrap:wrap; gap:2px; margin-top:12px; padding-top:9px;
  border-top:1px dashed #e5e9f0;
}
.aic-action{
  display:inline-flex; align-items:center; gap:6px;
  background:transparent; border:0; border-radius:8px;
  color:#6b7280; font:inherit; font-size:12.5px; padding:5px 9px; cursor:pointer;
  text-decoration:none !important; transition:background .15s ease, color .15s ease;
}
.aic-action .ico{ width:14px; height:14px; }
.aic-action:hover{ background:#f3f4f6; color:var(--aic-ink); }
.aic-action.is-done{ color:#047857; }

/* error + stopped states */
.aic-turn-ai.is-error{ border-color:#f3c7c7; background:#fff8f8; }
.aic-turn-ai.is-error::before{ background:#dc3545; }
.aic-error-text{ color:#9f1239; font-size:14.5px; margin:0 0 4px; }
.aic-stopped{ font-size:12.5px; color:var(--aic-faint); margin-top:8px; font-style:italic; }

/* --- Composer dock ------------------------------------------------------------ */
.aic-dock{
  position:sticky; bottom:0; z-index:20;
  padding:14px 0 12px; margin-top:auto;
  background:linear-gradient(180deg, rgba(247,249,252,0) 0%, rgba(247,249,252,.94) 26%, var(--aic-bg) 60%);
}
.aic-composer{
  background:var(--aic-card); border:1px solid #dfe5ec; border-radius:24px;
  box-shadow:0 8px 26px -10px rgba(9,14,22,.28), 0 1px 2px rgba(16,24,40,.06);
  padding:10px 12px 8px 16px;
  transition:border-color .2s ease, box-shadow .25s var(--ease,ease), transform .25s var(--ease,ease);
}
.aic-composer:focus-within{
  border-color:var(--aic-violet);
  box-shadow:0 0 0 4px rgba(132,94,247,.16), 0 12px 32px -10px rgba(9,14,22,.32);
  transform:translateY(-1px);
}
.aic-composer.is-disabled{ opacity:.7; }
.aic-input{
  display:block; width:100%; border:0; outline:0; resize:none; background:transparent;
  font:inherit; font-size:16px; line-height:1.5; color:var(--aic-ink);
  padding:6px 4px 4px; min-height:32px; max-height:220px; overflow-y:auto;
}
.aic-input::placeholder{ color:#93a0af; }
.aic-input:disabled{ color:#93a0af; }
.aic-composer-bar{ display:flex; align-items:center; justify-content:space-between; gap:10px; margin-top:2px; }
.aic-composer-left, .aic-composer-right{ display:flex; align-items:center; gap:6px; min-width:0; }
.aic-ghost{
  display:inline-flex; align-items:center; gap:6px;
  border:0; background:transparent; border-radius:999px;
  color:var(--aic-muted); font:inherit; font-size:13px; font-weight:500; padding:6px 10px; cursor:pointer;
  transition:background .15s ease, color .15s ease;
}
.aic-ghost .ico{ width:15px; height:15px; }
.aic-ghost:hover{ background:#f3f4f6; color:var(--aic-ink); }
.aic-meter{ display:inline-flex; align-items:center; gap:8px; font-size:12px; color:var(--aic-faint); margin-right:6px; }
.aic-meter-track{ width:58px; height:5px; border-radius:3px; background:#e9edf3; overflow:hidden; }
.aic-meter-fill{ display:block; height:100%; width:0; background:var(--aic-grad); transition:width .35s var(--ease,ease); }
.aic-meter.is-warn .aic-meter-fill{ background:#f59e0b; }
.aic-meter.is-full .aic-meter-fill{ background:#dc3545; }
.aic-meter.is-full .aic-meter-text{ color:#dc3545; font-weight:600; }
.aic-send, .aic-stop{
  width:40px; height:40px; border-radius:50%; border:0; flex:0 0 auto;
  display:grid; place-items:center; cursor:pointer;
  transition:transform .15s var(--ease,ease), box-shadow .15s ease, background-color .15s ease, color .15s ease;
}
.aic-send{ background:var(--aic-grad); color:#fff; box-shadow:0 4px 12px rgba(132,94,247,.38); }
.aic-send svg{ width:20px; height:20px; }
.aic-send:hover:not(:disabled){ transform:scale(1.07); box-shadow:0 6px 16px rgba(132,94,247,.5); }
.aic-send:active:not(:disabled){ transform:scale(.94); }
.aic-send:disabled{ background:#e3e7ee; color:#a3adba; box-shadow:none; cursor:default; }
.aic-stop{ background:#0f172a; color:#fff; }
.aic-stop:hover{ transform:scale(1.07); }
.aic-stop-square{ width:12px; height:12px; border-radius:2px; background:#fff; }
.aic-topic-row{ margin:0 0 6px; }
.aic-topic-chip{
  display:inline-flex; align-items:center; gap:6px; max-width:100%;
  background:var(--aic-grad-soft); color:var(--aic-violet-ink);
  border-radius:999px; padding:4px 6px 4px 10px; font-size:12.5px; font-weight:600;
}
.aic-topic-chip .ico{ width:13px; height:13px; flex:0 0 auto; }
.aic-topic-chip-text{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.aic-topic-clear{
  width:18px; height:18px; border:0; border-radius:50%; flex:0 0 auto;
  background:rgba(0,0,0,.07); color:inherit; font-size:15px; line-height:1; padding:0; cursor:pointer;
}
.aic-topic-clear:hover{ background:rgba(0,0,0,.14); }
.aic-disclaimer{ font-size:11.5px; color:var(--aic-faint); text-align:center; margin:9px 0 0; line-height:1.45; }
.aic-disclaimer a{ color:inherit; text-decoration:underline; }

/* notices (consent gate, message limit) */
.aic-notice{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px 16px;
  background:linear-gradient(#fff,#fff) padding-box, var(--aic-grad) border-box;
  border:1px solid transparent; border-radius:16px; padding:13px 16px; margin:0 0 10px;
  box-shadow:var(--shadow-1,0 1px 2px rgba(16,24,40,.05));
  animation:aic-rise .3s var(--ease,ease) both;
}
.aic-notice-body{ display:grid; gap:2px; font-size:13.5px; color:#374151; line-height:1.45; flex:1 1 320px; min-width:0; }
.aic-notice-body strong{ color:var(--aic-ink); font-weight:650; }
.aic-notice-body a{ color:var(--aic-blue); }
.aic-notice-actions{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.aic-notice .btn-primary{ border-radius:999px; }
.aic-notice .btn-sm{ border-radius:999px; }

/* --- Responsive ------------------------------------------------------------- */
@media (max-width:767.98px){
  :root{ --aic-header-h:74px; }
  .aic-wrap{ padding:0 12px; }
  .aic-hero{ padding:34px 0 18px; }
  .aic-hero-intro{ font-size:14.5px; margin-bottom:22px; }
  .aic-starters{ grid-template-columns:1fr; gap:8px; }
  .aic-starter{ padding:11px 12px; font-size:13.5px; }
  .aic-user-bubble{ max-width:92%; font-size:15px; }
  .aic-turn-ai{ padding:14px 14px 12px; border-radius:16px; }
  .aic-ai-body{ font-size:15px; }
  .aic-thread{ gap:18px; padding-top:16px; }
  .aic-dock{ padding:10px 0 8px; }
  .aic-composer{ padding:8px 8px 6px 12px; border-radius:22px; }
  .aic-input{ font-size:16px; }
  .aic-ghost span{ display:none; }
  .aic-ghost{ padding:8px; }
  .aic-meter-track{ width:44px; }
  .aic-disclaimer{ font-size:11px; }
  .aic-ai-meta{ display:none; }
}

/* --- Motion ------------------------------------------------------------------ */
@keyframes aic-rise{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:none; } }
@keyframes aic-float{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(-4px); } }
@keyframes aic-blink{ to{ opacity:0; } }
@keyframes aic-pulse{ 0%,100%{ opacity:1; } 50%{ opacity:.55; } }
@keyframes aic-dot{ 0%,80%,100%{ opacity:.35; transform:translateY(0); } 40%{ opacity:1; transform:translateY(-3px); } }
@keyframes aic-shimmer{ to{ background-position:-200% 0; } }
@media (prefers-reduced-motion: reduce){
  .aic-orb, .aic-starter, .aic-turn, .aic-notice, .aic-cursor, .aic-dots i, .aic-shimmer, .aic-turn-ai.is-pending .aic-badge{ animation:none !important; }
  .aic-composer:focus-within{ transform:none; }
}
@media print{
  .aic-dock, .aic-actions, .aic-suggest, #search-header, .fs-footer{ display:none !important; }
  .aic-turn-ai{ box-shadow:none; }
}