/* MiniCPM5-2B WebGPU Chat
   Accents borrowed from the MiniCPM5 capability radar: coral #E85D4C, teal #2A9D8F. */

:root {
  --bg: #0f1113;
  --surface: #16191c;
  --surface-2: #1d2125;
  --line: #282d32;
  --line-soft: #21262b;
  --fg: #eceef0;
  --fg-dim: #9aa3ab;
  --fg-faint: #6b757d;
  --coral: #e85d4c;
  --teal: #2a9d8f;
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal); }
a:hover { color: #3fbdad; }

/* ── Gate ─────────────────────────────────────────────────────────────── */

.gate {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
  background:
    radial-gradient(70ch 50ch at 50% -10%, rgba(232, 93, 76, 0.14), transparent 70%),
    radial-gradient(60ch 40ch at 80% 110%, rgba(42, 157, 143, 0.12), transparent 70%);
}

.gate-inner {
  width: 100%;
  max-width: 560px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.gate h1 {
  margin: 0;
  font-size: clamp(38px, 9vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 650;
  background: linear-gradient(96deg, var(--coral), #f0a58c 45%, var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 16px auto 28px;
  max-width: 44ch;
  color: var(--fg-dim);
}

.spec-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.spec {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 16px;
  min-width: 118px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.015);
}

.spec-k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.spec-v { font-size: 14px; font-weight: 550; }

.fineprint {
  margin-top: 30px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--fg-faint);
}

.gate-error {
  margin-top: 18px;
  padding: 14px 16px;
  text-align: left;
  border: 1px solid rgba(232, 93, 76, 0.4);
  border-radius: 10px;
  background: rgba(232, 93, 76, 0.08);
  font-size: 13.5px;
  color: #f4b3a8;
}

.gate-error strong { color: #ffd9d1; }

/* ── Progress ─────────────────────────────────────────────────────────── */

.progress-wrap { margin-top: 24px; text-align: left; }

.progress-label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  text-align: center;
}

.progress-list { display: flex; flex-direction: column; gap: 7px; }

.pfile { font-family: var(--mono); font-size: 11px; color: var(--fg-faint); }

.pfile-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}

.pfile-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.pbar {
  height: 4px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.pbar > i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--coral), var(--teal));
  transition: width 0.18s ease-out;
}

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

button {
  font: inherit;
  cursor: pointer;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: background 0.14s, border-color 0.14s, color 0.14s, opacity 0.14s;
}

.primary {
  padding: 13px 26px;
  font-weight: 560;
  color: #fff;
  background: var(--coral);
  border-color: var(--coral);
}

.primary:hover:not(:disabled) { background: #f06b59; }

.primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ghost {
  padding: 7px 13px;
  font-size: 13px;
  color: var(--fg-dim);
  background: transparent;
  border-color: var(--line);
}

.ghost:hover { color: var(--fg); border-color: #3a4147; background: var(--surface-2); }

.stop {
  padding: 13px 22px;
  font-weight: 560;
  color: var(--fg);
  background: var(--surface-2);
  border-color: var(--line);
}

.stop:hover { border-color: var(--coral); color: #f0a094; }

/* ── App shell ────────────────────────────────────────────────────────── */

.app {
  height: 100dvh;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  max-width: 860px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
}

.brand { display: flex; align-items: center; gap: 9px; font-size: 14.5px; letter-spacing: -0.01em; }

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.18);
}

.badge {
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--fg-faint);
}

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--fg-dim);
  cursor: pointer;
  user-select: none;
}

.toggle:hover { border-color: #3a4147; }
.toggle input { accent-color: var(--teal); margin: 0; cursor: pointer; }
.toggle:has(input:checked) { color: var(--fg); border-color: rgba(42, 157, 143, 0.5); }

/* ── Settings ─────────────────────────────────────────────────────────── */

.settings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px 22px;
  padding: 16px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface);
}

.field { display: flex; flex-direction: column; gap: 6px; font-size: 12.5px; color: var(--fg-dim); }
.field > span { display: flex; justify-content: space-between; gap: 8px; }
.field output { font-family: var(--mono); color: var(--fg); }
.field input[type="range"] { accent-color: var(--coral); width: 100%; }

.settings-note {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 12px;
  color: var(--fg-faint);
}

/* ── Chat ─────────────────────────────────────────────────────────────── */

.chat {
  overflow-y: auto;
  padding: 24px 16px 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.empty { padding: 6vh 0 0; text-align: center; }

.empty h2 {
  margin: 0 0 20px;
  font-size: 19px;
  font-weight: 550;
  letter-spacing: -0.015em;
  color: var(--fg-dim);
}

.examples {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 9px;
  max-width: 620px;
  margin: 0 auto;
}

.example {
  padding: 13px 15px;
  text-align: left;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--fg-dim);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 11px;
}

.example:hover { color: var(--fg); border-color: var(--line); background: var(--surface-2); }

.msg { margin-bottom: 22px; display: flex; flex-direction: column; }

.msg.user { align-items: flex-end; }

.msg.user .bubble {
  max-width: 78%;
  padding: 11px 15px;
  border-radius: 16px 16px 4px 16px;
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.msg.bot .bubble { white-space: pre-wrap; overflow-wrap: anywhere; }

.msg.bot .bubble:empty::after {
  content: "▍";
  color: var(--fg-faint);
  animation: blink 1.1s steps(2, start) infinite;
}

@keyframes blink { to { visibility: hidden; } }

/* Reasoning panel */

.think {
  margin-bottom: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 11px;
  background: rgba(42, 157, 143, 0.045);
  overflow: hidden;
}

.think > summary {
  padding: 8px 13px;
  cursor: pointer;
  list-style: none;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--teal);
  user-select: none;
}

.think > summary::-webkit-details-marker { display: none; }
.think > summary::before { content: "▸ "; display: inline-block; transition: transform 0.15s; }
.think[open] > summary::before { content: "▾ "; }

.think-body {
  padding: 2px 13px 12px;
  font-size: 13.5px;
  line-height: 1.62;
  color: var(--fg-dim);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  border-top: 1px solid var(--line-soft);
  padding-top: 10px;
}

.msg-error {
  padding: 11px 14px;
  border: 1px solid rgba(232, 93, 76, 0.4);
  border-radius: 10px;
  background: rgba(232, 93, 76, 0.08);
  font-size: 13.5px;
  color: #f4b3a8;
}

/* ── Composer ─────────────────────────────────────────────────────────── */

.composer-wrap {
  padding: 10px 16px 14px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg);
}

.composer { display: flex; gap: 9px; align-items: flex-end; }

.composer textarea {
  flex: 1;
  resize: none;
  max-height: 180px;
  padding: 12px 14px;
  font: inherit;
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
}

.composer textarea:focus { border-color: #3d444b; }
.composer textarea::placeholder { color: var(--fg-faint); }

.send { padding: 12px 22px; }

.stats {
  margin: 8px 2px 0;
  min-height: 15px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-faint);
}

@media (max-width: 560px) {
  .topbar { flex-wrap: wrap; }
  .msg.user .bubble { max-width: 90%; }
}