/* chat.samttle.ai — terminal-donor dark palette mapped ONTO @smtl/ui-tokens
   variables. Components consume var(--smtl-*) only; the :root block below is
   the single place raw colors live (terminal public/index.html:11-29 donor). */

:root {
  --smtl-bg-app: #1a1a2e;
  --smtl-bg-sidebar: #0f0f23;
  --smtl-bg-editor: #0d1117;
  --smtl-bg-panel: #16213e;
  --smtl-bg-statusbar: #0f0f23;
  --smtl-bg-elevated: #1f2a4a;
  --smtl-bg-overlay: rgba(10, 10, 24, 0.92);
  --smtl-bg-hover: #232f52;
  --smtl-bg-active: #2a3a66;
  --smtl-text-primary: #c9d1d9;
  --smtl-text-secondary: #8b949e;
  --smtl-brand-primary: #58a6ff;
  --smtl-brand-accent: #3fb950;
  --smtl-border-default: #2d3a5a;
  --chat-danger: #f85149;
  --chat-warn: #e8a838;
  --chat-font-ui: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --chat-font-mono: 'Cascadia Code', 'Fira Code', Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--chat-font-ui);
  background: var(--smtl-bg-app);
  color: var(--smtl-text-primary);
}
.hidden { display: none !important; }
.accent { color: var(--smtl-brand-primary); }
button {
  font: inherit; border: 1px solid var(--smtl-border-default);
  background: var(--smtl-bg-elevated); color: var(--smtl-text-primary);
  border-radius: 6px; padding: 6px 14px; cursor: pointer;
}
button:hover { background: var(--smtl-bg-hover); }
button.ghost { background: transparent; border-color: transparent; color: var(--smtl-text-secondary); }
input, textarea, select {
  font: inherit; color: var(--smtl-text-primary);
  background: var(--smtl-bg-editor); border: 1px solid var(--smtl-border-default);
  border-radius: 6px; padding: 8px 10px;
}
input:focus, textarea:focus, select:focus { outline: 1px solid var(--smtl-brand-primary); }

/* ---- Login overlay (terminal 380px auth card) ---- */
#auth-screen {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: var(--smtl-bg-overlay); z-index: 10;
}
.auth-card {
  width: 380px; padding: 32px; border-radius: 12px;
  background: var(--smtl-bg-panel); border: 1px solid var(--smtl-border-default);
  display: flex; flex-direction: column; gap: 12px;
}
.auth-card h1 { margin: 0 0 4px; font-size: 22px; }
.auth-sub { margin: 0; color: var(--smtl-text-secondary); font-size: 13px; }
.auth-card form { display: flex; flex-direction: column; gap: 10px; }
.auth-card button[type="submit"] {
  background: var(--smtl-brand-primary); border-color: var(--smtl-brand-primary); color: #0d1117;
  font-weight: 600;
}
.auth-error { color: var(--chat-danger); font-size: 13px; }

/* ---- App shell: sidebar 260px + main column ---- */
#app { display: flex; height: 100vh; }
#sidebar {
  width: 260px; flex: none; background: var(--smtl-bg-sidebar);
  border-right: 1px solid var(--smtl-border-default);
  display: flex; flex-direction: column;
}
.sidebar-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px; border-bottom: 1px solid var(--smtl-border-default);
}
.brand { font-weight: 600; }
#conversation-list { flex: 1; overflow-y: auto; padding: 6px; }
.conv-item {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 10px; border-radius: 6px; cursor: pointer;
  color: var(--smtl-text-secondary); font-size: 13px;
}
.conv-item:hover { background: var(--smtl-bg-hover); color: var(--smtl-text-primary); }
.conv-item.active { background: var(--smtl-bg-active); color: var(--smtl-text-primary); }
.conv-item .title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv-item .del { visibility: hidden; color: var(--smtl-text-secondary); border: none; background: none; padding: 0 4px; }
.conv-item:hover .del { visibility: visible; }
.conv-item .del:hover { color: var(--chat-danger); }

#main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

/* ---- Topbar with picker ---- */
#topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px; background: var(--smtl-bg-panel);
  border-bottom: 1px solid var(--smtl-border-default);
}
#conv-title { font-weight: 600; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#picker { display: flex; gap: 10px; align-items: center; }
#picker label { display: flex; flex-direction: column; font-size: 11px; color: var(--smtl-text-secondary); gap: 2px; }
#picker select { min-width: 110px; max-width: 220px; padding: 4px 6px; font-size: 13px; }
.badge {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  background: var(--chat-warn); color: #0d1117; font-weight: 600;
}

/* ---- Transcript ---- */
#transcript { flex: 1; overflow-y: auto; padding: 20px 24px; display: flex; flex-direction: column; gap: 14px; }
.msg { max-width: 82%; padding: 10px 14px; border-radius: 10px; white-space: pre-wrap; word-wrap: break-word; font-size: 14px; line-height: 1.5; }
.msg.user { align-self: flex-end; background: var(--smtl-bg-active); }
.msg.assistant { align-self: flex-start; background: var(--smtl-bg-panel); border: 1px solid var(--smtl-border-default); font-family: var(--chat-font-mono); font-size: 13px; }
.msg.error { align-self: center; color: var(--chat-danger); background: transparent; border: 1px dashed var(--chat-danger); }
.msg .meta { display: block; margin-top: 6px; font-size: 11px; color: var(--smtl-text-secondary); font-family: var(--chat-font-ui); }
.msg.streaming::after { content: '▋'; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---- Composer + statusbar ---- */
#composer { display: flex; gap: 10px; padding: 12px 16px; border-top: 1px solid var(--smtl-border-default); background: var(--smtl-bg-panel); }
#input { flex: 1; resize: none; font-family: var(--chat-font-ui); }
.composer-actions { display: flex; flex-direction: column; gap: 6px; justify-content: flex-end; }
#send-btn { background: var(--smtl-brand-accent); border-color: var(--smtl-brand-accent); color: #0d1117; font-weight: 600; }
#stop-btn { background: var(--chat-danger); border-color: var(--chat-danger); color: #0d1117; font-weight: 600; }

#statusbar {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 12px; font-size: 12px; color: var(--smtl-text-secondary);
  background: var(--smtl-bg-statusbar); border-top: 1px solid var(--smtl-border-default);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--smtl-brand-accent); display: inline-block; }
.dot.busy { background: var(--chat-warn); }
.dot.err { background: var(--chat-danger); }
.spacer { flex: 1; }