/* ─── Design Tokens ─────────────────────────────────────────────────────────── */
:root {
  --bg:           #080D16;
  --surface:      #0F1829;
  --card:         #141F33;
  --card-hover:   #1A2840;
  --border:       #1E2F4A;
  --border-light: #253756;

  --text:         #E4EBF8;
  --subtext:      #7A90B8;
  --muted:        #3D5278;

  --accent:       #4B8EFF;   /* blue — Ollama */
  --accent-glow:  rgba(75,142,255,0.18);
  --accent-dim:   rgba(75,142,255,0.10);

  --green:        #2DD4A0;   /* browser mode */
  --green-glow:   rgba(45,212,160,0.18);
  --green-dim:    rgba(45,212,160,0.10);

  --red:          #F87171;
  --yellow:       #FBBF24;

  --radius:       14px;
  --radius-sm:    8px;
  --radius-lg:    20px;

  --font-display: 'Sora', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --shadow:       0 4px 24px rgba(0,0,0,0.35);
  --shadow-lg:    0 8px 48px rgba(0,0,0,0.5);
  --trans:        0.2s ease;
}

/* ─── Base ───────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
input, textarea { font-family: inherit; color: inherit; background: none; border: none; outline: none; }
a { color: var(--accent); }
pre, code { font-family: var(--font-mono); }

/* ─── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ─── Icon button ────────────────────────────────────────────────────────────── */
.icon-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--subtext);
  font-size: 16px;
  transition: background var(--trans), color var(--trans);
}
.icon-btn:hover { background: var(--card); color: var(--text); }

/* ─── Primary / Ghost buttons ────────────────────────────────────────────────── */
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity var(--trans), transform var(--trans), box-shadow var(--trans);
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow); }
.btn-primary:disabled { opacity: 0.4; transform: none; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--subtext);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: border-color var(--trans), color var(--trans);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text); }

/* browser mode — green accent for primary buttons */
[data-backend="browser"] .btn-primary { background: var(--green); }
[data-backend="browser"] .btn-primary:hover { box-shadow: 0 4px 16px var(--green-glow); }

/* ─── Status badge ───────────────────────────────────────────────────────────── */
.status-badge {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 0.3rem 0.7rem;
  border-radius: 99px;
  white-space: nowrap;
}
.status-badge.running {
  background: rgba(45,212,160,0.12);
  color: var(--green);
  border: 1px solid rgba(45,212,160,0.25);
}
.status-badge.offline {
  background: rgba(248,113,113,0.10);
  color: var(--red);
  border: 1px solid rgba(248,113,113,0.2);
}

/* ════════════════════════════════════════════════════════════════════════════════
   SETUP OVERLAY
════════════════════════════════════════════════════════════════════════════════ */
#setup-overlay {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  background: var(--bg);
  overflow-y: auto;
  z-index: 10;
}

/* ── Setup header ── */
.setup-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0;
  background: var(--bg);
  z-index: 2;
  gap: 1rem;
}

.logo { display: flex; align-items: center; gap: 0.6rem; }
.logo-mark {
  font-size: 1.4rem;
  color: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}
.logo-text { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }

.header-actions { display: flex; align-items: center; gap: 0.5rem; }

/* ── Setup body ── */
.setup-body {
  flex: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem;
  width: 100%;
}

/* ── Backend toggle ── */
.backend-toggle-wrap { margin-bottom: 2.5rem; }

.backend-toggle {
  display: flex; gap: 0.75rem;
  margin-bottom: 1rem;
}

.toggle-btn {
  flex: 1;
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 0.15rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: var(--card);
  transition: border-color var(--trans), background var(--trans), box-shadow var(--trans);
  text-align: left;
  max-width: 260px;
}
.toggle-btn:hover { border-color: var(--border-light); background: var(--card-hover); }
.toggle-btn.active {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
[data-backend="browser"] .toggle-btn.active {
  border-color: var(--green);
  background: var(--green-dim);
  box-shadow: 0 0 0 4px var(--green-glow);
}

.toggle-icon { font-size: 1.3rem; margin-bottom: 0.1rem; }
.toggle-label { font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; }
.toggle-sub { font-size: 0.75rem; color: var(--subtext); }

.backend-note {
  font-size: 0.83rem;
  color: var(--subtext);
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

/* ── Models heading ── */
.models-heading {
  font-size: 0.85rem;
  color: var(--subtext);
  margin-bottom: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* ── Model grid ── */
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.25rem;
}

/* ── Model card ── */
.model-card {
  --accent: #4B8EFF;
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 0.85rem;
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
  overflow: hidden;
}
.model-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--trans);
}
.model-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3), 0 0 0 1px var(--accent);
}
.model-card:hover::before { opacity: 1; }

.model-card.recommended {
  border-color: var(--accent);
  background: linear-gradient(160deg, var(--card) 60%, color-mix(in srgb, var(--accent) 8%, transparent));
}
.model-card.recommended::before { opacity: 0.5; }

.rec-badge {
  position: absolute; top: 1rem; right: 1rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}

.card-header {}
.card-name {
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.15rem;
  color: var(--text);
}
.card-subtitle {
  font-size: 0.78rem;
  color: var(--subtext);
  margin-top: 0.1rem;
  font-family: var(--font-mono);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--subtext);
  line-height: 1.55;
  flex: 1;
}

.card-caps { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.cap-tag {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 99px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}

.card-stats { display: flex; gap: 1rem; }
.stat { display: flex; flex-direction: column; gap: 0.1rem; }
.stat-label { font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-stars { font-size: 0.8rem; letter-spacing: 0.05em; }
.stat-stars.speed   { color: #FBBF24; }
.stat-stars.quality { color: #60A5FA; }

.card-footer { display: flex; align-items: center; gap: 0.75rem; margin-top: auto; }
.card-size {
  font-size: 0.75rem;
  color: var(--muted);
  font-family: var(--font-mono);
  flex: 1;
}
.installed-tag {
  font-size: 0.72rem;
  color: var(--green);
  font-weight: 600;
}

.select-btn {
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  transition: opacity var(--trans), transform var(--trans);
}
.select-btn:hover { opacity: 0.85; transform: translateX(2px); }

/* ════════════════════════════════════════════════════════════════════════════════
   MODAL SCREENS  (install / loading / error)
════════════════════════════════════════════════════════════════════════════════ */
#install-screen,
#loading-screen,
#error-screen {
  position: fixed; inset: 0;
  display: flex;
  align-items: center; justify-content: center;
  background: rgba(8,13,22,0.85);
  backdrop-filter: blur(8px);
  z-index: 20;
  padding: 1.5rem;
}

.modal-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 500px;
  width: 100%;
  display: flex; flex-direction: column; gap: 1.2rem;
  box-shadow: var(--shadow-lg);
}

.modal-icon {
  font-size: 2.5rem;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 0.25rem;
}

.spinning { animation: spin 1.4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.modal-card h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
}
.modal-card p { font-size: 0.9rem; color: var(--subtext); line-height: 1.6; }

.install-cmd-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
}
.install-cmd-label { font-size: 0.75rem; color: var(--muted); display: block; margin-bottom: 0.4rem; }
.install-cmd {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--accent);
  word-break: break-all;
}

/* Progress bar */
.progress-label {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8rem; color: var(--subtext);
}
.progress-track {
  height: 6px;
  background: var(--surface);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.3s ease;
  box-shadow: 0 0 8px var(--accent-glow);
}
.progress-fill.browser { background: var(--green); box-shadow: 0 0 8px var(--green-glow); }

.loading-file-name {
  font-size: 0.73rem;
  color: var(--muted);
  font-family: var(--font-mono);
  word-break: break-all;
  min-height: 1rem;
}

.modal-actions { display: flex; gap: 0.75rem; justify-content: flex-end; margin-top: 0.5rem; }

.error-card .modal-icon { background: rgba(248,113,113,0.12); }
.error-detail {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--subtext);
  white-space: pre-wrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.8rem;
  max-height: 180px;
  overflow-y: auto;
}

/* ════════════════════════════════════════════════════════════════════════════════
   CHAT VIEW
════════════════════════════════════════════════════════════════════════════════ */
#chat-view {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  background: var(--bg);
  z-index: 10;
}

/* ── Chat header ── */
.chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  flex-shrink: 0;
}
.chat-header-left { display: flex; align-items: center; gap: 0.75rem; }
.chat-header-right { display: flex; align-items: center; gap: 0.5rem; }

.chat-model-info { display: flex; align-items: center; gap: 0.6rem; }
.chat-model-name { font-family: var(--font-display); font-weight: 600; font-size: 1rem; }

.chat-backend-tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 99px;
}
.chat-backend-tag.ollama {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-glow);
}
.chat-backend-tag.browser {
  background: var(--green-dim);
  color: var(--green);
  border: 1px solid var(--green-glow);
}

/* ── Messages ── */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1rem;
  display: flex; flex-direction: column; gap: 1.25rem;
  scroll-behavior: smooth;
}

/* Base message bubble */
.message { display: flex; max-width: 820px; margin: 0 auto; width: 100%; }

/* System message */
.message.system {
  justify-content: center;
}
.message.system > * {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 1.1rem;
  font-size: 0.82rem;
  color: var(--subtext);
  max-width: 560px;
  text-align: center;
}

/* User message */
.message.user {
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}
.message.user .msg-text {
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius) var(--radius) 4px var(--radius);
  padding: 0.75rem 1.1rem;
  max-width: 640px;
  font-size: 0.9rem;
  line-height: 1.55;
  word-break: break-word;
}
[data-backend="browser"] .message.user .msg-text { background: var(--green); color: #001; }

.msg-image {
  max-width: 280px; max-height: 220px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border);
  align-self: flex-end;
}

.msg-file-tag {
  font-size: 0.78rem;
  color: var(--subtext);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  border-radius: 99px;
  align-self: flex-end;
}
.msg-file-tag.error { color: var(--red); border-color: rgba(248,113,113,0.3); }

/* Assistant message */
.message.assistant {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.75rem;
}

.model-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
}
[data-backend="browser"] .model-icon {
  background: var(--green-dim);
  border-color: color-mix(in srgb, var(--green) 30%, transparent);
  color: var(--green);
}

.msg-bubble { flex: 1; min-width: 0; }

.msg-bubble .msg-text {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text);
  word-break: break-word;
}
.msg-bubble .msg-text.error { color: var(--red); }

/* Streaming cursor */
.msg-text.streaming::after {
  content: '▋';
  animation: blink 0.8s step-end infinite;
  color: var(--accent);
  margin-left: 2px;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* Markdown inside messages */
.msg-bubble .msg-text p { margin-bottom: 0.65rem; }
.msg-bubble .msg-text p:last-child { margin-bottom: 0; }
.msg-bubble .msg-text h1,.msg-bubble .msg-text h2,.msg-bubble .msg-text h3 {
  font-family: var(--font-display); margin: 1rem 0 0.4rem; color: var(--text);
}
.msg-bubble .msg-text ul,.msg-bubble .msg-text ol { padding-left: 1.4rem; margin-bottom: 0.5rem; }
.msg-bubble .msg-text li { margin-bottom: 0.25rem; }
.msg-bubble .msg-text code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.85em;
  color: #93C5FD;
}
.msg-bubble .msg-text pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  overflow-x: auto;
  margin: 0.75rem 0;
}
.msg-bubble .msg-text pre code {
  background: none; border: none; padding: 0; color: inherit; font-size: 0.83rem;
}
.msg-bubble .msg-text blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.3rem 0.9rem;
  margin: 0.5rem 0;
  color: var(--subtext);
}
.msg-bubble .msg-text table { border-collapse: collapse; width: 100%; margin: 0.75rem 0; font-size: 0.85rem; }
.msg-bubble .msg-text th,.msg-bubble .msg-text td {
  border: 1px solid var(--border); padding: 0.4rem 0.75rem; text-align: left;
}
.msg-bubble .msg-text th { background: var(--card); font-weight: 600; }

/* ── Input area ── */
.input-area {
  border-top: 1px solid var(--border);
  padding: 0.9rem 1rem 0.75rem;
  flex-shrink: 0;
  background: var(--bg);
}

.file-error {
  font-size: 0.78rem;
  color: var(--red);
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.2);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.6rem;
}

.file-preview-row {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-bottom: 0.7rem;
}
.file-chip {
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.25rem 0.7rem 0.25rem 0.35rem;
  font-size: 0.78rem;
  color: var(--subtext);
}
.chip-thumb {
  width: 24px; height: 24px;
  border-radius: 50%;
  object-fit: cover;
}
.chip-remove {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  font-size: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background var(--trans), color var(--trans);
}
.chip-remove:hover { background: var(--red); color: #fff; }

.input-row {
  display: flex; align-items: flex-end; gap: 0.6rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.6rem 0.5rem 0.75rem;
  transition: border-color var(--trans), box-shadow var(--trans);
}
.input-row:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
[data-backend="browser"] .input-row:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}

.attach-btn {
  color: var(--subtext);
  padding: 0.3rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: color var(--trans), background var(--trans);
  margin-bottom: 2px;
}
.attach-btn:hover { color: var(--accent); background: var(--accent-dim); }

.user-input {
  flex: 1;
  min-height: 24px;
  max-height: 140px;
  resize: none;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text);
  overflow-y: auto;
}
.user-input::placeholder { color: var(--muted); }

.send-btn {
  background: var(--accent);
  color: #fff;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
  transition: opacity var(--trans), transform var(--trans);
  white-space: nowrap;
  margin-bottom: 1px;
}
.send-btn:hover:not(:disabled) { opacity: 0.85; }
.send-btn:disabled { opacity: 0.5; cursor: not-allowed; }
[data-backend="browser"] .send-btn { background: var(--green); color: #001; }

.input-hint {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 0.5rem;
  text-align: center;
}

/* Drag-over state */
#chat-view.drag-over .input-row {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

/* ════════════════════════════════════════════════════════════════════════════════
   SETTINGS PANEL
════════════════════════════════════════════════════════════════════════════════ */
.settings-overlay {
  position: fixed; inset: 0;
  background: rgba(8,13,22,0.6);
  backdrop-filter: blur(4px);
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--trans);
}
#settings-panel.open + .settings-overlay,  /* fallback */
.settings-overlay:has(+ #settings-panel.open) { display: none; }
#settings-panel.open ~ .settings-overlay {
  opacity: 1;
  pointer-events: all;
}

#settings-panel {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(420px, 100vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 50;
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
  box-shadow: var(--shadow-lg);
}
#settings-panel.open { transform: translateX(0); }

.settings-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.settings-header h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}

.settings-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1.5rem;
}

.settings-label {
  display: flex; flex-direction: column; gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}
.settings-hint {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--subtext);
  line-height: 1.45;
}
.settings-input {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-size: 0.88rem;
  color: var(--text);
  transition: border-color var(--trans);
  width: 100%;
}
.settings-input:focus { border-color: var(--accent); outline: none; }
.settings-textarea { resize: vertical; min-height: 90px; }

.settings-section-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.settings-code {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  font-size: 0.75rem;
  color: var(--subtext);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ════════════════════════════════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  .setup-header { padding: 1rem; }
  .setup-body   { padding: 1.25rem 1rem 2rem; }

  .backend-toggle { flex-direction: column; }
  .toggle-btn     { max-width: none; flex-direction: row; align-items: center; gap: 0.75rem; }
  .toggle-icon    { font-size: 1.1rem; }

  .model-grid { grid-template-columns: 1fr; }

  .messages   { padding: 1rem 0.75rem; }
  .input-area { padding: 0.75rem; }

  .message.user .msg-text { max-width: 100%; }

  #settings-panel { width: 100vw; }
}

/* ── Subtle gradient background shimmer ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 10%, rgba(75,142,255,0.05) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 90%, rgba(167,139,250,0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}
[data-backend="browser"] body::before {
  background:
    radial-gradient(ellipse 60% 50% at 20% 10%, rgba(45,212,160,0.05) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 90%, rgba(16,185,129,0.04) 0%, transparent 60%);
}
#setup-overlay, #chat-view, #install-screen, #loading-screen, #error-screen {
  position: relative; z-index: 1;
}

/* ─── Sub-model tags on browser model cards ─────────────────────────────── */
.card-submodels {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin: -0.2rem 0;
}
.submodel-tag {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}