:root {
  --bg: #0e1116;
  --bg-2: #141920;
  --surface: #181e26;
  --surface-2: #1f2731;
  --line: #2a323d;
  --line-2: #39434f;
  --ink: #eef2f6;
  --ink-2: #a4b0bd;
  --ink-3: #6b7787;
  --brand: #4ade9a;
  --brand-2: #24b57a;
  --brand-ink: #0b2a1e;
  --brand-soft: #14352a;
  --accent: #f0a868;
  --amber: #e8bd6a;
  --amber-soft: #2c2415;
  --radius: 14px;
  --radius-lg: 22px;
  --ease: cubic-bezier(.32, .72, 0, 1);
  --font: "Inter", ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 40px rgba(0,0,0,.35);
  --shadow-lg: 0 20px 70px rgba(0,0,0,.55);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ambient light */
body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(60vw 45vh at 70% -10%, rgba(74,222,154,.10), transparent 65%),
    radial-gradient(50vw 40vh at 10% 5%, rgba(240,168,104,.06), transparent 60%);
}

button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 8px; }

/* ══════════════════════════════════════════════════ prototype switcher */

.proto-bar {
  position: sticky; top: 0; z-index: 90;
  display: flex; align-items: center; gap: 18px;
  padding: 11px clamp(14px, 3vw, 28px);
  background: rgba(14,17,22,.78);
  backdrop-filter: saturate(150%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.proto-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-3); white-space: nowrap;
}
.proto-label .dot { width: 6px; height: 6px; border-radius: 99px; background: var(--brand); box-shadow: 0 0 10px var(--brand); }

.tabs { display: flex; gap: 4px; padding: 3px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.tabs button {
  padding: 7px 15px; border-radius: 9px; font-size: 13.5px; font-weight: 520; color: var(--ink-2);
  white-space: nowrap; transition: all .18s var(--ease);
}
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] { background: var(--surface-2); color: var(--ink); box-shadow: 0 1px 0 rgba(255,255,255,.04) inset; }
.tabs button b { color: var(--brand); font-weight: 620; margin-right: 6px; }

.proto-hint { margin-left: auto; font-size: 12.5px; color: var(--ink-3); white-space: nowrap; }
@media (max-width: 900px) { .proto-hint { display: none; } }

/* ══════════════════════════════════════════════════ dimmed shop backdrop */

/* The shop is scenery. It stays legible enough to read as a real storefront,
   dim enough that nobody reviews it instead of the assistant. */
.shop {
  position: relative; z-index: 1;
  max-width: 1220px; margin: 0 auto; padding: 0 clamp(14px, 3vw, 28px);
  user-select: none;
}
.dim {
  filter: saturate(.3) brightness(.78);
  opacity: .46;
  transition: opacity .5s var(--ease), filter .5s var(--ease);
}
body[data-variant="widget"] .dim { opacity: .62; filter: saturate(.5) brightness(.9); }

.shop-head { display: flex; align-items: center; gap: 14px; padding: 20px 0 26px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 650; letter-spacing: -.02em; font-size: 16px; }
.logo-mark {
  width: 25px; height: 25px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(150deg, var(--brand), var(--brand-2)); color: var(--brand-ink);
  font-size: 13px; font-weight: 800;
}
.shop-nav { display: flex; gap: 20px; margin-left: 12px; font-size: 13.5px; color: var(--ink-3); }
.shop-cart { margin-left: auto; font-size: 13.5px; color: var(--ink-3); }

.shop-hero { padding: 6px 0 30px; max-width: 560px; }
.shop-hero h1 { margin: 0 0 10px; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.1; letter-spacing: -.035em; font-weight: 640; }
.shop-hero p { margin: 0; color: var(--ink-2); font-size: 15px; }

.shop-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; padding: 10px 0 80px; }
.shop-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 13px;
}
.shop-card .art { height: 74px; border-radius: 10px; background: var(--surface-2); display: grid; place-items: center; font-size: 26px; margin-bottom: 10px; }
.shop-card h4 { margin: 0 0 4px; font-size: 13px; font-weight: 540; line-height: 1.3; }
.shop-card .b { color: var(--ink-3); font-size: 11.5px; margin-bottom: 7px; }
.shop-card .p { font-size: 13.5px; font-weight: 620; }

/* ══════════════════════════════════════════════════ shared chat atoms */

.msgs { display: flex; flex-direction: column; gap: 16px; }

.msg { display: flex; gap: 12px; animation: rise .34s var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

.msg.user { justify-content: flex-end; }
.msg.user .bubble {
  background: var(--surface-2); border: 1px solid var(--line);
  border-radius: 18px 18px 5px 18px; padding: 11px 15px; max-width: 78%;
}
.msg.bot .bubble { max-width: 100%; padding-top: 3px; }

.ava {
  width: 28px; height: 28px; border-radius: 9px; flex-shrink: 0; margin-top: 1px;
  background: linear-gradient(150deg, var(--brand), var(--brand-2));
  color: var(--brand-ink); display: grid; place-items: center; font-weight: 800; font-size: 12px;
}

.bubble { font-size: 15px; line-height: 1.62; white-space: pre-wrap; word-break: break-word; }
.bubble strong { font-weight: 620; color: #fff; }
.bubble .fine { display: block; margin-top: 12px; color: var(--ink-3); font-size: 11.5px; line-height: 1.45; }

.trace { display: flex; align-items: center; gap: 8px; padding: 2px 0 2px 40px; animation: rise .26s var(--ease) both; }
.trace span {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12px; color: var(--ink-3);
}
.trace .spin { width: 11px; height: 11px; border: 1.6px solid var(--line-2); border-top-color: var(--brand); border-radius: 99px; animation: spin .7s linear infinite; flex-shrink: 0; }
.trace.done .spin {
  border: none; animation: none; background: var(--brand);
  width: 6px; height: 6px; margin: 0 2.5px; opacity: .75;
}
@keyframes spin { to { transform: rotate(360deg); } }

.typing { display: inline-flex; gap: 5px; padding: 10px 0 10px 40px; }
.typing i { width: 6px; height: 6px; border-radius: 99px; background: var(--ink-3); animation: blink 1.3s infinite; }
.typing i:nth-child(2) { animation-delay: .18s; }
.typing i:nth-child(3) { animation-delay: .36s; }
@keyframes blink { 0%,60%,100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

/* product cards in chat */
.cards { display: flex; gap: 10px; margin: 4px 0 0 40px; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x mandatory; }
.cards::-webkit-scrollbar { height: 4px; }
.cards::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 99px; }
.pcard {
  flex: 0 0 176px; scroll-snap-align: start; padding: 12px; border-radius: 15px;
  background: var(--surface); border: 1px solid var(--line);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.pcard:hover { border-color: var(--line-2); transform: translateY(-2px); }
.pcard .art { height: 58px; border-radius: 10px; background: var(--surface-2); display: grid; place-items: center; font-size: 24px; margin-bottom: 9px; }
.pcard h4 { margin: 0 0 3px; font-size: 12.5px; font-weight: 545; line-height: 1.32; }
.pcard .meta { color: var(--ink-3); font-size: 11px; margin-bottom: 8px; }
.pcard .p { font-size: 14px; font-weight: 640; margin-bottom: 9px; letter-spacing: -.01em; }
.pcard button {
  width: 100%; padding: 7px; border-radius: 9px; font-size: 12px; font-weight: 560;
  background: var(--brand-soft); color: var(--brand);
  transition: background .16s var(--ease), color .16s var(--ease);
}
.pcard button:hover { background: var(--brand); color: var(--brand-ink); }
.pcard button:disabled { opacity: .4; pointer-events: none; }

/* gentle inline note — replaces the old red alarm box */
.note {
  margin-left: 40px; padding: 11px 14px; border-radius: 12px;
  background: var(--amber-soft); border: 1px solid rgba(232,189,106,.22);
  color: var(--amber); font-size: 13px; line-height: 1.5;
  display: flex; gap: 9px; animation: rise .3s var(--ease) both;
}
.note svg { flex-shrink: 0; margin-top: 2px; }

/* composer */
.composer { position: relative; }
.chips { display: flex; gap: 7px; overflow-x: auto; padding-bottom: 10px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chips button {
  flex-shrink: 0; padding: 7px 13px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--line);
  font-size: 12.5px; color: var(--ink-2); white-space: nowrap;
  transition: all .16s var(--ease);
}
.chips button:hover { border-color: var(--brand); color: var(--ink); background: var(--surface-2); }

.field {
  display: flex; align-items: flex-end; gap: 8px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 17px; padding: 8px 8px 8px 15px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.field:focus-within { border-color: var(--line-2); box-shadow: 0 0 0 4px rgba(74,222,154,.07); }
.field textarea {
  flex: 1; border: none; background: none; resize: none; outline: none;
  font-size: 15px; line-height: 1.5; max-height: 140px; padding: 7px 0; color: var(--ink);
}
.field textarea::placeholder { color: var(--ink-3); }
.icon-btn {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  color: var(--ink-3); flex-shrink: 0; transition: all .16s var(--ease);
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.send {
  width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0;
  background: var(--brand); color: var(--brand-ink); display: grid; place-items: center;
  transition: transform .16s var(--ease), opacity .16s var(--ease);
}
.send:hover { transform: scale(1.06); }
.send:disabled { opacity: .3; pointer-events: none; transform: none; }

.legal { margin-top: 10px; text-align: center; font-size: 11.5px; color: var(--ink-3); }

/* ══════════════════════════════════════════════════ A · inline chat */

.stage { position: relative; z-index: 2; }
.panel { display: none; }
body[data-variant="inline"] #panel-inline { display: block; }
body[data-variant="form"] #panel-form { display: block; }

#panel-inline {
  max-width: 840px; margin: 0 auto; padding: 4px clamp(14px, 3vw, 28px) 56px;
}
.inline-shell {
  background: linear-gradient(180deg, rgba(24,30,38,.96), rgba(20,25,32,.98));
  border: 1px solid var(--line); border-radius: 26px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  overflow: hidden;
}
.inline-head {
  display: flex; align-items: center; gap: 11px; padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.inline-head .who b { display: block; font-size: 14.5px; font-weight: 600; letter-spacing: -.01em; }
.inline-head .who span { font-size: 12px; color: var(--ink-3); display: flex; align-items: center; gap: 5px; }
.online { width: 6px; height: 6px; border-radius: 99px; background: var(--brand); box-shadow: 0 0 8px var(--brand); }

.inline-body { padding: 26px 22px 18px; min-height: 380px; max-height: 56vh; overflow-y: auto; }
.inline-body::-webkit-scrollbar { width: 8px; }
.inline-body::-webkit-scrollbar-thumb { background: var(--line); border-radius: 99px; border: 2px solid transparent; background-clip: padding-box; }

.inline-foot { padding: 14px 18px 18px; border-top: 1px solid var(--line); background: rgba(20,25,32,.6); }

/* empty state — the ChatGPT-style greeting */
.greet { text-align: center; padding: 34px 10px 30px; animation: rise .5s var(--ease) both; }
.greet .mark {
  width: 46px; height: 46px; border-radius: 15px; margin: 0 auto 18px;
  background: linear-gradient(150deg, var(--brand), var(--brand-2)); color: var(--brand-ink);
  display: grid; place-items: center; font-weight: 800; font-size: 20px;
  box-shadow: 0 8px 30px rgba(74,222,154,.25);
}
.greet h2 { margin: 0 0 8px; font-size: 24px; letter-spacing: -.03em; font-weight: 620; }
.greet p { margin: 0 auto; max-width: 400px; color: var(--ink-2); font-size: 14.5px; line-height: 1.55; }
.greet-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; max-width: 520px; margin: 26px auto 0; }
@media (max-width: 560px) { .greet-grid { grid-template-columns: 1fr; } }
.greet-grid button {
  text-align: left; padding: 13px 15px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--line);
  transition: all .18s var(--ease);
}
.greet-grid button:hover { border-color: var(--line-2); background: var(--surface-2); transform: translateY(-1px); }
.greet-grid b { display: block; font-size: 13.5px; font-weight: 550; margin-bottom: 2px; }
.greet-grid span { font-size: 12px; color: var(--ink-3); }

/* ══════════════════════════════════════════════════ B · floating widget */

.fab {
  position: fixed; right: 26px; bottom: 26px; z-index: 70;
  display: none; align-items: center; gap: 10px;
  padding: 14px 20px 14px 16px; border-radius: 999px;
  background: var(--brand); color: var(--brand-ink); font-weight: 600; font-size: 14.5px;
  box-shadow: 0 6px 20px rgba(74,222,154,.28), 0 20px 50px rgba(0,0,0,.4);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease);
}
body[data-variant="widget"] .fab { display: flex; }
.fab:hover { transform: translateY(-2px) scale(1.02); }
.fab .ping { width: 8px; height: 8px; border-radius: 99px; background: var(--brand-ink); opacity: .55; animation: ping 2.2s infinite; }
@keyframes ping { 0%,100% { transform: scale(1); opacity: .55; } 50% { transform: scale(1.4); opacity: .2; } }

.widget {
  position: fixed; right: 26px; bottom: 26px; z-index: 80;
  width: min(410px, calc(100vw - 32px)); height: min(640px, calc(100vh - 120px));
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 24px; box-shadow: var(--shadow-lg);
  transform: translateY(18px) scale(.97); opacity: 0; pointer-events: none;
  transition: transform .3s var(--ease), opacity .24s var(--ease);
  overflow: hidden;
}
.widget[data-open="true"] { transform: none; opacity: 1; pointer-events: auto; }
.widget-head { display: flex; align-items: center; gap: 11px; padding: 15px 16px; border-bottom: 1px solid var(--line); }
.widget-head .who b { display: block; font-size: 14px; font-weight: 600; }
.widget-head .who span { font-size: 11.5px; color: var(--ink-3); display: flex; align-items: center; gap: 5px; }
.widget-body { flex: 1; overflow-y: auto; padding: 18px 16px; }
.widget-body::-webkit-scrollbar { width: 7px; }
.widget-body::-webkit-scrollbar-thumb { background: var(--line); border-radius: 99px; }
.widget-foot { padding: 12px 14px 14px; border-top: 1px solid var(--line); }
.widget .bubble { font-size: 14.5px; }
.widget .cards, .widget .trace, .widget .typing, .widget .note { margin-left: 0; padding-left: 0; }
.widget .trace { padding-left: 2px; }
.widget .msg.bot .ava { display: none; }

/* ══════════════════════════════════════════════════ C · form variant */

#panel-form { max-width: 680px; margin: 0 auto; padding: 4px clamp(14px, 3vw, 28px) 56px; }
.form-shell {
  background: linear-gradient(180deg, rgba(24,30,38,.96), rgba(20,25,32,.98));
  border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow-lg);
  padding: 32px 30px 30px;
}
.bar { height: 3px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: 30px; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand-2), var(--brand)); border-radius: 99px; transition: width .45s var(--ease); }

.q { animation: rise .34s var(--ease) both; }
.q .n { font-size: 11.5px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.q h2 { margin: 0 0 6px; font-size: 24px; letter-spacing: -.028em; font-weight: 620; line-height: 1.24; }
.q .hint { color: var(--ink-3); font-size: 13.5px; margin-bottom: 22px; }

.opts { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.opt {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px; text-align: left;
  border-radius: 13px; background: var(--surface); border: 1px solid var(--line);
  transition: all .16s var(--ease);
}
.opt:hover { border-color: var(--line-2); transform: translateX(2px); }
.opt[aria-pressed="true"] { border-color: var(--brand); background: var(--brand-soft); }
.opt .mark {
  width: 19px; height: 19px; border-radius: 6px; border: 1.5px solid var(--line-2);
  flex-shrink: 0; display: grid; place-items: center; font-size: 11px; color: var(--brand-ink);
  transition: all .16s var(--ease);
}
.opt[aria-pressed="true"] .mark { background: var(--brand); border-color: var(--brand); }
.opt input { width: 100%; border: none; background: none; outline: none; }

.nav { display: flex; gap: 10px; align-items: center; }
.back { color: var(--ink-3); padding: 11px 2px; font-size: 14px; }
.back:hover { color: var(--ink); }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: 12px;
  font-weight: 570; font-size: 14.5px; transition: all .16s var(--ease);
}
.btn-primary { background: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { background: #6ce8b0; }
.btn:disabled { opacity: .35; pointer-events: none; }

.rec {
  display: grid; grid-template-columns: 76px 1fr; gap: 15px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 18px;
  padding: 17px; margin-bottom: 11px; animation: rise .4s var(--ease) both;
}
.rec .art { height: 76px; border-radius: 12px; background: var(--surface-2); display: grid; place-items: center; font-size: 30px; }
.rec h3 { margin: 0 0 3px; font-size: 15.5px; font-weight: 600; letter-spacing: -.015em; }
.rec .fact { display: inline-block; padding: 4px 10px; border-radius: 8px; background: var(--brand-soft); color: var(--brand); font-size: 11.5px; font-weight: 540; margin-bottom: 8px; }
.rec .why { color: var(--ink-2); font-size: 13.5px; line-height: 1.55; margin: 8px 0 12px; }
.rec .price { font-size: 15px; font-weight: 640; }

.result-head { margin-bottom: 20px; }
.result-head h2 { margin: 0 0 6px; font-size: 23px; letter-spacing: -.028em; font-weight: 620; }
.result-head p { margin: 0; color: var(--ink-2); font-size: 14px; }

.switch-cta {
  margin-top: 20px; padding: 16px 18px; border-radius: 16px;
  background: var(--surface); border: 1px dashed var(--line-2);
  display: flex; align-items: center; gap: 14px;
}
.switch-cta p { margin: 0; flex: 1; font-size: 13.5px; color: var(--ink-2); }

.spinner { width: 18px; height: 18px; border: 2px solid var(--line-2); border-top-color: var(--brand); border-radius: 99px; animation: spin .7s linear infinite; }
.loading { display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 60px 0; color: var(--ink-3); font-size: 14px; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }