/* ============================================================
   ArenaAi — ArenaAi-v1.0.0
   Author: ArenaAi
   public/css/style.css — chat UI, "paper/console" minimal system
   5 themes: night · day · sea · sand · forest (html[data-theme])
   ============================================================ */

/* ---------------- tokens / themes ---------------- */
:root,
html[data-theme="night"] {
  --bg: #0c0e12;
  --bg-soft: #101319;
  --surface: #12151c;
  --surface-2: #171b23;
  --ink: #e9e7e1;
  --ink-2: #b9b5ac;
  --mut: #85817a;
  --line: #262b34;
  --line-soft: #1d212a;
  --accent: #d9b778;
  --accent-ink: #16130b;
  --accent-soft: rgba(217, 183, 120, 0.14);
  --danger: #e2725b;
  --ok: #8fbf8f;
  --bubble: #191e27;
  --code-bg: #0f1218;
  --topbar: rgba(12, 14, 18, 0.86);
  --tint: rgba(217, 183, 120, 0.06);
  color-scheme: dark;
}
html[data-theme="day"] {
  --bg: #fafaf7;
  --bg-soft: #f3f2ee;
  --surface: #ffffff;
  --surface-2: #f0efe9;
  --ink: #1b1e23;
  --ink-2: #41454c;
  --mut: #74787f;
  --line: #e2e0d8;
  --line-soft: #ebebe4;
  --accent: #0e7a6d;
  --accent-ink: #ffffff;
  --accent-soft: rgba(14, 122, 109, 0.1);
  --danger: #b3402a;
  --ok: #2c7a4b;
  --bubble: #f1f0ea;
  --code-bg: #f4f3ee;
  --topbar: rgba(250, 250, 247, 0.88);
  --tint: rgba(14, 122, 109, 0.05);
  color-scheme: light;
}
html[data-theme="sea"] {
  --bg: #0a1420;
  --bg-soft: #0d1927;
  --surface: #101f30;
  --surface-2: #15273c;
  --ink: #e2ecf4;
  --ink-2: #b3c4d1;
  --mut: #7e93a5;
  --line: #1e3247;
  --line-soft: #182839;
  --accent: #7cc7ef;
  --accent-ink: #06131e;
  --accent-soft: rgba(124, 199, 239, 0.13);
  --danger: #ef8878;
  --ok: #86c9a4;
  --bubble: #14243a;
  --code-bg: #0c1929;
  --topbar: rgba(10, 20, 32, 0.86);
  --tint: rgba(124, 199, 239, 0.06);
  color-scheme: dark;
}
html[data-theme="sand"] {
  --bg: #f2ecdf;
  --bg-soft: #ece4d3;
  --surface: #faf7ef;
  --surface-2: #efe7d6;
  --ink: #2b2620;
  --ink-2: #4c443a;
  --mut: #7d7264;
  --line: #ddd2bc;
  --line-soft: #e6dcc8;
  --accent: #a35c25;
  --accent-ink: #fff8ef;
  --accent-soft: rgba(163, 92, 37, 0.1);
  --danger: #a13320;
  --ok: #3f6f3f;
  --bubble: #efe7d5;
  --code-bg: #f3ecdd;
  --topbar: rgba(242, 236, 223, 0.88);
  --tint: rgba(163, 92, 37, 0.05);
  color-scheme: light;
}
html[data-theme="forest"] {
  --bg: #0d1712;
  --bg-soft: #101c15;
  --surface: #13221a;
  --surface-2: #182b20;
  --ink: #dfe9e1;
  --ink-2: #aebfae;
  --mut: #7d8f80;
  --line: #24382b;
  --line-soft: #1c2c21;
  --accent: #7fc79b;
  --accent-ink: #0a140e;
  --accent-soft: rgba(127, 199, 155, 0.12);
  --danger: #e27f6d;
  --ok: #8fbf8f;
  --bubble: #172720;
  --code-bg: #101d16;
  --topbar: rgba(13, 23, 18, 0.86);
  --tint: rgba(127, 199, 155, 0.06);
  color-scheme: dark;
}

/* ---------------- base ---------------- */
* { box-sizing: border-box; }
html { height: 100%; }
body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Naskh Arabic UI", "Vazirmatn", Tahoma, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}
img { max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; padding: 0; }
input, textarea, select { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--accent-soft); }
::placeholder { color: var(--mut); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; border: 2px solid var(--bg); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------------- topbar ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--topbar);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar-in {
  max-width: 60rem;
  margin: 0 auto;
  padding: 0 14px;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; color: var(--accent); }
.brand-name { line-height: 1.4; }
.brand img { width: 24px; height: 24px; }
.brand-ver {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 9.5px;
  color: var(--mut);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 6px;
  line-height: 15px;
}
.top-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  margin-inline: auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.top-chips::-webkit-scrollbar { display: none; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 240px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink-2);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.chip:hover, .chip[aria-expanded="true"] { border-color: var(--accent); color: var(--ink); background: var(--accent-soft); }
.chip-ico { font-size: 14px; line-height: 1; }
.chip-text { display: flex; flex-direction: column; min-width: 0; text-align: start; }
.chip-label { font-size: 9px; color: var(--mut); letter-spacing: 0.06em; line-height: 1.3; }
.chip-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 170px;
}
.chip-caret { font-weight: 400; font-size: 9px; color: var(--mut); }
.top-actions { display: flex; align-items: center; gap: 4px; }
.icon-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  border: 1px solid transparent;
  color: var(--ink-2);
  font-size: 15px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.icon-btn:hover { background: var(--surface-2); border-color: var(--line); color: var(--ink); }

/* connection pill */
.conn-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  height: 28px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-size: 10.5px;
  color: var(--mut);
  white-space: nowrap;
}
.conn-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mut); flex: none; }
.conn-dot.on { background: var(--ok); }
.conn-dot.off { background: var(--mut); }
.conn-dot.bad { background: var(--danger); }
@media (max-width: 700px) { .conn-pill { display: none; } }

/* theme menu */
.theme-wrap { position: relative; }
.theme-dot { display: block; width: 15px; height: 15px; border-radius: 50%; background: conic-gradient(var(--accent) 0 25%, var(--ink) 0 50%, var(--accent-soft) 0 75%, var(--line) 0); border: 1px solid var(--line); }
.theme-menu {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  z-index: 60;
  min-width: 190px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.theme-title { font-size: 9.5px; color: var(--mut); letter-spacing: 0.08em; padding: 6px 10px 4px; }
.theme-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--ink-2);
  text-align: start;
}
.theme-opt:hover { background: var(--surface-2); color: var(--ink); }
.theme-opt.active { background: var(--accent-soft); color: var(--ink); }
.theme-opt.active::after { content: "✓"; margin-inline-start: auto; color: var(--accent); font-size: 11px; }
.swatch { width: 14px; height: 14px; border-radius: 4px; border: 1px solid var(--line); flex: none; }

/* ---------------- notices ---------------- */
.notice {
  padding: 8px 16px;
  font-size: 12.5px;
  text-align: center;
  border-bottom: 1px solid var(--line-soft);
}
.strip-danger { background: var(--accent-soft); color: var(--ink); }
.strip-soft { background: var(--bg-soft); color: var(--ink-2); }

/* ---------------- stage / chat column ---------------- */
.stage { flex: 1; display: flex; justify-content: center; min-height: 0; }
.col {
  width: 100%;
  max-width: 46rem;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
}
.chat-log { flex: 1; padding: 26px 0 18px; display: flex; flex-direction: column; gap: 26px; }

/* ---------------- empty state ---------------- */
.empty-state {
  margin: auto 0;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.hero-eyebrow {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--accent);
}
.hero-title {
  margin: 0;
  font-size: clamp(26px, 6vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.hero-sub { margin: 0; color: var(--ink-2); font-size: 14px; max-width: 42rem; }
.hero-rule { width: 44px; height: 2px; background: var(--accent); border: 0; margin: 6px 0 2px; }
.quick-list { display: flex; flex-direction: column; margin-top: 8px; border-top: 1px solid var(--line-soft); }
.quick-chip {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-align: start;
  padding: 11px 6px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-2);
  font-size: 13.5px;
  transition: background 0.15s, color 0.15s, padding 0.15s;
}
.quick-chip b { color: var(--ink); font-weight: 600; flex: none; }
.quick-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--mut); font-size: 12px; }
.quick-chip::before { content: "→"; color: var(--accent); font-family: ui-monospace, monospace; font-size: 12px; }
.quick-chip:hover { background: var(--tint); color: var(--ink); padding-inline-start: 10px; }
.quick-chip:hover span { color: var(--ink-2); }
.hero-support { font-size: 12px; color: var(--mut); margin-top: 12px; }
.hero-logo { display: none; }

/* ---------------- messages ---------------- */
.msg { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.msg-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  color: var(--mut);
  letter-spacing: 0.05em;
}
.msg-meta .sep { opacity: 0.6; }
.msg-meta .m-model { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 9.5px; direction: ltr; unicode-bidi: embed; }

.msg .body { min-width: 0; }

/* user: compact tinted bubble, start-aligned */
.msg.user { align-items: flex-start; }
.msg.user .body {
  background: var(--bubble);
  border: 1px solid var(--line-soft);
  border-radius: 4px 14px 14px 14px;
  padding: 9px 14px;
  max-width: min(78%, 34rem);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 14.5px;
}

/* bot: editorial block with accent start-rule, no bubble */
.msg.bot { align-items: stretch; }
.msg.bot .body {
  border-inline-start: 2px solid var(--accent-soft);
  padding-inline-start: 14px;
}
.msg.bot.fresh .body { border-inline-start-color: var(--accent); }
.msg.bot .md { min-height: 10px; }

.msg-actions { display: flex; gap: 6px; padding-inline-start: 16px; }
.mini-btn {
  font-size: 11px;
  color: var(--mut);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  padding: 3px 10px;
  background: transparent;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.mini-btn:hover { color: var(--ink); border-color: var(--line); background: var(--surface-2); }

/* streaming caret + typing */
.msg-meta.hide { display: none; }
.stream-state.live { animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.55; } }
.caret {
  display: inline-block;
  width: 8px; height: 14px;
  margin-inline-start: 2px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 0.9s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.typing { display: inline-flex; gap: 4px; align-items: center; padding: 4px 0; }
.typing i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--mut);
  animation: tp 1.2s ease-in-out infinite;
}
.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes tp { 0%, 60%, 100% { opacity: 0.35; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-3px); } }

.reasoning-block {
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--mut);
}
.reasoning-block .rb-title { color: var(--accent); font-size: 10px; letter-spacing: 0.08em; display: block; margin-bottom: 2px; }

/* ---------------- markdown ---------------- */
.md { overflow-wrap: anywhere; }
.md > *:first-child { margin-top: 0; }
.md > *:last-child { margin-bottom: 0; }
.md p { margin: 0.55em 0; font-size: 14.8px; }
.md h1, .md h2, .md h3, .md h4 { margin: 1.15em 0 0.45em; line-height: 1.45; font-weight: 700; }
.md h1 { font-size: 20px; }
.md h2 { font-size: 17.5px; }
.md h2::after, .md h1::after { content: ""; display: block; width: 34px; height: 1px; background: var(--line); margin-top: 6px; }
.md h3 { font-size: 15.5px; color: var(--accent); }
.md h4 { font-size: 14.5px; color: var(--ink-2); }
.md ul, .md ol { margin: 0.55em 0; padding-inline-start: 1.4em; }
.md li { margin: 0.28em 0; }
.md li::marker { color: var(--accent); }
.md blockquote {
  margin: 0.7em 0;
  border-inline-start: 2px solid var(--accent);
  background: var(--tint);
  padding: 8px 14px;
  border-radius: 0 8px 8px 0;
  color: var(--ink-2);
}
.md hr { border: 0; border-top: 1px solid var(--line-soft); margin: 1.1em 0; }
.md strong { color: var(--ink); }
.md code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.86em;
  background: var(--code-bg);
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  padding: 1px 6px;
  direction: ltr;
  unicode-bidi: embed;
}
.code-block {
  direction: ltr;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  margin: 0.8em 0;
  background: var(--code-bg);
}
.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 12px;
  border-bottom: 1px solid var(--line-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px;
  color: var(--mut);
  letter-spacing: 0.04em;
}
.copy-code {
  font-size: 10.5px;
  color: var(--mut);
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  padding: 2px 8px;
}
.copy-code:hover { color: var(--accent); border-color: var(--accent); }
.code-block pre {
  margin: 0;
  padding: 12px 14px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.6px;
  line-height: 1.75;
}
.md table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8em 0;
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.md th, .md td { border: 1px solid var(--line-soft); padding: 7px 10px; text-align: start; }
.md th { background: var(--surface-2); font-weight: 700; font-size: 12.5px; }
.md tr:nth-child(even) td { background: var(--tint); }
.md .md-note { color: var(--mut); }
/* ---------------- composer ---------------- */
.dock {
  position: sticky;
  bottom: 0;
  z-index: 30;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
  background: var(--bg); /* fallback for engines without color-mix() */
  background: linear-gradient(to top, var(--bg) 68%, color-mix(in srgb, var(--bg) 0%, transparent));
}
.composer {
  max-width: 46rem;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 8px 10px 8px;
  transition: border-color 0.2s;
}
.composer:focus-within { border-color: var(--accent); }
.c-tools {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 4px 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.c-tools::-webkit-scrollbar { display: none; }
.tool-btn {
  flex: none;
  font-size: 11.5px;
  color: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  padding: 4px 10px;
  background: transparent;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.tool-btn:hover { color: var(--ink); border-color: var(--line); background: var(--surface-2); }
#btnDeep.active {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}
.deep-glyph { margin-inline-end: 2px; }
.stream-state { margin-inline-start: auto; font-size: 10.5px; color: var(--accent); white-space: nowrap; padding-inline-start: 8px; }
.c-row { display: flex; align-items: flex-end; gap: 8px; }
#messageInput {
  flex: 1;
  resize: none;
  border: 0;
  background: transparent;
  min-height: 30px;
  max-height: 180px;
  padding: 5px 2px;
  font-size: 14.5px;
  line-height: 1.65;
  outline: none;
}
.send-btn {
  flex: none;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  transition: opacity 0.15s, transform 0.1s;
}
.send-btn:hover { opacity: 0.92; }
.send-btn:active { transform: scale(0.96); }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.send-btn[hidden] { display: none !important; }
.send-btn.stop { background: var(--danger); color: #fff; }
.c-foot {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 4px 0;
  font-size: 10px;
  color: var(--mut);
}
.c-foot #charCount { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 9.5px; }
.foot-hint { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (min-width: 641px) { .foot-hint { white-space: normal; } }

/* ---------------- footer ---------------- */
.foot {
  border-top: 1px solid var(--line-soft);
  padding: 14px 16px calc(14px + env(safe-area-inset-bottom, 0px));
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 18px;
  font-size: 11px;
  color: var(--mut);
}
.foot-social { display: flex; flex-wrap: wrap; gap: 4px 14px; justify-content: center; }
.foot-social a { display: inline-flex; align-items: center; gap: 5px; color: var(--ink-2); font-size: 11.5px; }
.foot-social a:hover { color: var(--accent); text-decoration: none; }
.foot-social .social-handle { font-family: ui-monospace, monospace; font-size: 10.5px; color: var(--mut); }
.dot-sep { opacity: 0.5; margin: 0 4px; }
@media (max-width: 600px) { .foot-meta { flex-direction: column; gap: 2px; } .dot-sep { display: none; } }

/* ---------------- modals ---------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(0, 0, 0, 0.62); /* fallback for engines without color-mix() */
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}
.modal[hidden] { display: none; }
.modal-card {
  width: min(560px, 100%);
  max-height: min(720px, 92dvh);
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  animation: mIn 0.18s ease-out;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}
@keyframes mIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
}
.modal-head h3 { margin: 0; font-size: 14.5px; font-weight: 700; }
.modal-body { padding: 14px 16px 16px; overflow-y: auto; }
.modal-lede { margin: 0 0 12px; font-size: 12px; color: var(--mut); }
.modal-lede.current-label { margin: 14px 0 0; color: var(--ink-2); }
.modal-lede.current-label b { color: var(--accent); }
body.modal-open { overflow: hidden; }

/* platform tabs + search */
.ptabs { display: flex; gap: 6px; margin-bottom: 10px; overflow-x: auto; scrollbar-width: none; }
.ptabs::-webkit-scrollbar { display: none; }
.ptab {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  padding: 6px 11px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--ink-2);
  background: transparent;
  transition: all 0.15s;
}
.ptab:hover { border-color: var(--line); color: var(--ink); }
.ptab.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.ptab .muted-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--mut); opacity: 0.7; }
.ptab.active .muted-dot { background: var(--accent-ink); }
.search-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
#modelSearch {
  flex: 1 1 140px;
  min-width: 120px;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  padding: 7px 12px;
  font-size: 12.5px;
  outline: none;
}
#modelSearch:focus { border-color: var(--accent); }
.check-soft { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--ink-2); cursor: pointer; white-space: nowrap; }
.check-soft input { accent-color: var(--accent); width: 14px; height: 14px; }
.mini-note { font-size: 10.5px; color: var(--mut); margin-bottom: 8px; }
.mini-note.note-warn { color: var(--danger); border: 1px dashed var(--danger); border-radius: 8px; padding: 6px 10px; }

/* model list: hairline rows (not cards) */
.model-list { display: flex; flex-direction: column; border-top: 1px solid var(--line-soft); }
.model-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: start;
  padding: 10px 6px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-2);
  transition: background 0.12s, padding 0.12s;
}
.model-row:hover { background: var(--tint); padding-inline-start: 10px; }
.model-row.active { background: var(--accent-soft); }
.model-row.active .model-name { color: var(--accent); }
.model-name { font-size: 13px; font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.model-id { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 10px; color: var(--mut); direction: ltr; unicode-bidi: embed; align-self: flex-start; }
.model-desc { font-size: 11.5px; color: var(--mut); }
.badge {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--mut);
  white-space: nowrap;
}
.badge.free { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.danger { color: var(--danger); border-color: var(--danger); }
.model-empty { padding: 26px 10px; text-align: center; font-size: 12.5px; color: var(--mut); }

/* persona grid */
.persona-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 8px; }
.persona-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  text-align: start;
  border: 1px solid var(--line-soft);
  border-radius: 11px;
  padding: 11px 12px;
  background: var(--surface);
  transition: border-color 0.15s, background 0.15s;
  position: relative;
}
.persona-card:hover { border-color: var(--line); background: var(--surface-2); }
.persona-card.active { border-color: var(--accent); background: var(--accent-soft); }
.pc-top { display: flex; align-items: center; gap: 8px; }
.persona-emoji { font-size: 17px; }
.persona-name { font-size: 13px; font-weight: 700; color: var(--ink); }
.persona-tag { font-size: 11px; color: var(--mut); line-height: 1.6; }
.persona-exp { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; }
.persona-exp span {
  font-size: 9.5px;
  color: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  padding: 0 6px;
  line-height: 16px;
}
.persona-rec { font-size: 10px; color: var(--ink-2); display: flex; align-items: center; gap: 4px; margin-top: 2px; }
.persona-rec .mono { font-family: ui-monospace, monospace; font-size: 9px; direction: ltr; color: var(--mut); }
.persona-use-rec {
  font-size: 10px;
  color: var(--accent);
  border: 1px dashed var(--accent);
  border-radius: 7px;
  padding: 2px 8px;
  margin-top: 4px;
  align-self: flex-start;
  cursor: pointer;
  transition: background 0.15s;
}
.persona-use-rec:hover { background: var(--accent-soft); }

/* socials + feedback */
.social-list { display: flex; flex-direction: column; border-top: 1px solid var(--line-soft); margin-bottom: 14px; }
.social-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 4px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-2);
  font-size: 13px;
}
.social-row:hover { color: var(--accent); text-decoration: none; background: var(--tint); }
.social-icon { font-size: 15px; }
.social-handle { font-family: ui-monospace, monospace; font-size: 10.5px; color: var(--mut); margin-inline-start: auto; direction: ltr; }
.fb-form { display: flex; flex-direction: column; gap: 8px; }
.fb-label { font-size: 12px; color: var(--ink-2); }
#feedbackText {
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 13px;
  resize: vertical;
  min-height: 70px;
  outline: none;
}
#feedbackText:focus { border-color: var(--accent); }
.fb-msg { font-size: 11px; color: var(--ok); min-height: 15px; }
.fb-msg.err { color: var(--danger); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface-2);
  transition: filter 0.15s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* reset rows */
.reset-list { display: flex; flex-direction: column; gap: 8px; }
.reset-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: start;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  padding: 11px 14px;
  transition: border-color 0.15s, background 0.15s;
}
.reset-row:hover { border-color: var(--line); background: var(--surface-2); }
.reset-row b { font-size: 13px; color: var(--ink); font-weight: 600; }
.reset-row span { font-size: 11px; color: var(--mut); }
.reset-row.danger:hover { border-color: var(--danger); }
.reset-row.danger b { color: var(--danger); }

/* toasts */
.toast-wrap {
  position: fixed;
  bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-inline-start: 2px solid var(--accent);
  color: var(--ink);
  font-size: 12.5px;
  padding: 9px 16px;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  animation: tIn 0.2s ease-out;
  max-width: min(420px, 88vw);
}
.toast.err { border-inline-start-color: var(--danger); }
@keyframes tIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------------- responsive ---------------- */
@media (max-width: 640px) {
  .topbar-in { flex-wrap: wrap; padding: 8px 12px 6px; row-gap: 6px; }
  .top-chips { order: 3; width: 100%; margin: 0 0 2px; justify-content: flex-start; }
  .top-actions { margin-inline-start: auto; }
  .chip { max-width: none; }
  .chip-value { max-width: 40vw; }
  .brand-ver { display: none; }
  .stage .col { padding: 0 12px; }
  .chat-log { padding-top: 18px; gap: 22px; }
  .msg.user .body { max-width: 88%; }
  .msg-actions { padding-inline-start: 12px; }
  .md table { display: block; overflow-x: auto; }

  /* modals → bottom sheet */
  .modal { align-items: flex-end; padding: 0; }
  .modal-card {
    width: 100%;
    max-height: 88dvh;
    border-radius: 16px 16px 0 0;
    border-bottom: 0;
    animation: sheetUp 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
  }
  .modal-head { position: sticky; top: 0; background: var(--surface); z-index: 2; }
  .modal-head::before { content: ""; position: absolute; top: 6px; left: 50%; transform: translateX(-50%); width: 38px; height: 4px; border-radius: 99px; background: var(--line); }
  .modal-head h3 { padding-top: 4px; }
  @keyframes sheetUp { from { transform: translateY(60%); opacity: 0.6; } to { transform: none; opacity: 1; } }

  .toast-wrap { width: 100%; }
  .toast { max-width: 92vw; }
  .persona-grid { grid-template-columns: 1fr; }
  .c-tools .tool-btn:nth-child(3) { display: none; }
}

@media (min-width: 641px) and (max-width: 900px) {
  .persona-grid { grid-template-columns: repeat(2, 1fr); }
}

/* compact desktop topbar spacing */
@media (min-width: 900px) {
  .topbar-in { padding: 0 20px; }
}

/* ---------------- misc ---------------- */
.spinner {
  display: inline-block;
  width: 13px;
  height: 13px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: -2px;
  margin-inline-end: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

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

@media print {
  .topbar, .dock, .foot, .msg-actions, .toast-wrap { display: none !important; }
  body { background: #fff; color: #000; }
}


/* ArenaAi attachment and voice controls */
#attachmentInput { display: none; }
#attachmentStatus { min-width: 0; font-size: 10px; color: var(--accent); }
#btnAttach, #btnVoice { border: 1px solid var(--line-soft); border-radius: 8px; padding: 3px 8px; }
#btnAttach:hover, #btnVoice:hover { border-color: var(--accent); color: var(--accent); }
#btnAttach:disabled, #btnVoice:disabled { opacity: .55; cursor: wait; }

.generated-image { display: block; width: min(100%, 720px); max-height: 620px; object-fit: contain; margin-top: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
#imagePrompt { width: 100%; resize: vertical; min-height: 100px; padding: 10px 12px; color: var(--ink); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; }
#imagePrompt:focus { outline: 1px solid var(--accent); }
#btnImage { border: 1px solid var(--line-soft); border-radius: 8px; padding: 3px 8px; }

/* Account registration and login gate */
.auth-gate{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:22px;background:rgba(7,9,13,.96);backdrop-filter:blur(12px)}
.auth-gate[hidden]{display:none}
.auth-panel{width:min(420px,100%);padding:34px 30px;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 80px rgba(0,0,0,.35)}
.auth-panel>img{margin-bottom:10px}
.auth-eyebrow{margin:0;color:var(--accent);font:10px ui-monospace,monospace;letter-spacing:.2em}
.auth-panel h1{margin:8px 0;font-size:23px;color:var(--ink)}
.auth-description{margin:0 0 22px;color:var(--mut);font-size:12.5px;line-height:1.9}
.auth-form{display:flex;flex-direction:column;gap:8px;text-align:start}
.auth-form label{font-size:12px;color:var(--ink-2);margin-top:5px}
.auth-form input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg-soft);color:var(--ink);outline:none;font-size:14px}
.auth-form input:focus{border-color:var(--accent)}
.auth-error{min-height:18px;margin:2px 0;color:var(--danger);font-size:11.5px;line-height:1.7}
.auth-submit{width:100%;min-height:42px;cursor:pointer}
.auth-switch{margin-top:17px;color:var(--accent);font-size:12px;text-decoration:underline}
.auth-privacy{margin:18px 0 0;color:var(--mut);font-size:10px}
@media(max-width:480px){.auth-panel{padding:28px 20px}}

.account-email{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:10px;color:var(--mut);direction:ltr}
.account-logout{font-size:10px;padding:5px 8px;border:1px solid var(--line-soft);border-radius:8px}


/* ---------------- ArenaAi cinematic cyber background ---------------- */
:root,
html[data-theme="night"] {
  --scene-base: #070b16;
  --scene-glow-a: rgba(30, 104, 255, .25);
  --scene-glow-b: rgba(137, 56, 255, .20);
  --scene-glow-c: rgba(0, 218, 206, .12);
  --scene-stars: rgba(190, 211, 255, .42);
}
html[data-theme="sea"] {
  --scene-base: #06121b;
  --scene-glow-a: rgba(0, 174, 255, .27);
  --scene-glow-b: rgba(46, 91, 255, .19);
  --scene-glow-c: rgba(0, 235, 196, .15);
  --scene-stars: rgba(164, 231, 255, .42);
}
html[data-theme="forest"] {
  --scene-base: #08130f;
  --scene-glow-a: rgba(15, 190, 127, .22);
  --scene-glow-b: rgba(62, 115, 255, .16);
  --scene-glow-c: rgba(173, 218, 83, .12);
  --scene-stars: rgba(190, 240, 208, .34);
}
html[data-theme="day"],
html[data-theme="sand"] {
  --scene-base: var(--bg);
  --scene-glow-a: rgba(67, 135, 235, .12);
  --scene-glow-b: rgba(151, 105, 220, .10);
  --scene-glow-c: rgba(25, 174, 160, .07);
  --scene-stars: rgba(65, 91, 130, .20);
}
html { background: var(--scene-base, var(--bg)); }
body {
  position: relative;
  isolation: isolate;
  background: transparent;
}
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
body::before {
  background:
    radial-gradient(ellipse 38% 48% at 8% 18%, var(--scene-glow-a), transparent 75%),
    radial-gradient(ellipse 42% 55% at 94% 82%, var(--scene-glow-b), transparent 74%),
    radial-gradient(ellipse 34% 38% at 52% 48%, var(--scene-glow-c), transparent 78%),
    linear-gradient(128deg, var(--scene-base, var(--bg)) 0%, var(--bg) 48%, var(--scene-base, var(--bg)) 100%);
  background-size: 150% 150%;
  animation: arenaNebulaDrift 34s ease-in-out infinite alternate;
}
body::after {
  opacity: .62;
  background-image:
    radial-gradient(1px 1px at 8% 16%, var(--scene-stars) 99%, transparent),
    radial-gradient(1px 1px at 22% 72%, var(--scene-stars) 99%, transparent),
    radial-gradient(1.5px 1.5px at 41% 28%, var(--scene-stars) 99%, transparent),
    radial-gradient(1px 1px at 63% 84%, var(--scene-stars) 99%, transparent),
    radial-gradient(1px 1px at 78% 19%, var(--scene-stars) 99%, transparent),
    radial-gradient(1.5px 1.5px at 91% 54%, var(--scene-stars) 99%, transparent),
    linear-gradient(115deg, transparent 0 47%, rgba(120, 170, 255, .035) 48%, transparent 49% 100%);
  background-size: 190px 190px, 230px 230px, 270px 270px, 210px 210px, 250px 250px, 300px 300px, 100% 100%;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.55) 62%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.55) 62%, transparent 100%);
  animation: arenaStarSlide 70s linear infinite;
}
@keyframes arenaNebulaDrift {
  0% { transform: scale(1) translate3d(0, 0, 0); filter: saturate(1); }
  100% { transform: scale(1.08) translate3d(1.1%, -1%, 0); filter: saturate(1.18); }
}
@keyframes arenaStarSlide {
  from { background-position: 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 0 0; }
  to { background-position: 190px 190px, -230px 230px, 270px -270px, -210px -210px, 250px 250px, -300px 300px, 0 0; }
}
@media (max-width: 640px) {
  body::after { opacity: .34; }
  body::before { animation-duration: 48s; }
}
@media (prefers-reduced-motion: reduce) {
  body::before, body::after { animation: none !important; }
}


/* ---------------- larger, fully visible composer tools ---------------- */
.c-tools {
  flex-wrap: wrap;
  overflow: visible;
  align-items: stretch;
  gap: 8px;
  padding: 4px 2px 10px;
}
.c-tools::-webkit-scrollbar { display: none; }
.c-tools .tool-btn {
  flex: 1 1 auto;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12.5px;
  line-height: 1.4;
  padding: 7px 12px;
}
.c-tools .stream-state {
  flex: 1 0 100%;
  margin-inline-start: 0;
  padding: 2px 4px;
  min-height: 0;
}
@media (max-width: 640px) {
  .dock {
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
  }
  .composer {
    padding: 9px 9px 8px;
    border-radius: 13px;
  }
  .c-tools {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
    max-height: min(34vh, 230px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .c-tools .tool-btn {
    width: 100%;
    min-width: 0;
    min-height: 40px;
    white-space: normal;
    text-align: center;
    font-size: 12px;
    padding: 7px 6px;
  }
  .c-tools .stream-state {
    grid-column: 1 / -1;
  }
  .c-row { gap: 7px; }
  #messageInput { font-size: 14px; }
}