/* llm.go — dark monospace UI */

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

:root {
  --bg:      #0d0f12;
  --surface: #151820;
  --border:  #252b38;
  --accent:  #5ba4f5;
  --muted:   #4a5568;
  --text:    #e2e8f0;
  --user-bg: #1a2235;
  --bot-bg:  #141b24;
  --green:   #68d391;
  --font:    "JetBrains Mono", "Fira Code", "Cascadia Code", ui-monospace, monospace;
}

html, body { height: 100%; }

body {
  font-family: var(--font);
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── header ────────────────────────────────────────────────────────────────── */
header {
  padding: 24px 32px 16px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
}

header h1 .dot { color: var(--accent); }

.tagline {
  margin-top: 4px;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.sub {
  margin-top: 6px;
  font-size: 11px;
  color: var(--muted);
}

.sub a { color: var(--accent); text-decoration: none; }
.sub a:hover { text-decoration: underline; }

/* ── status bar ────────────────────────────────────────────────────────────── */
#status {
  padding: 6px 32px;
  font-size: 11px;
  color: var(--green);
  background: #0b1018;
  border-bottom: 1px solid var(--border);
  min-height: 28px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── main ──────────────────────────────────────────────────────────────────── */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── message log ───────────────────────────────────────────────────────────── */
#log {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  line-height: 1.6;
}

.msg.user      { background: var(--user-bg); }
.msg.assistant { background: var(--bot-bg); }

.msg .label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  min-width: 44px;
  padding-top: 2px;
}

.msg.user      .label { color: var(--accent); }
.msg.assistant .label { color: var(--green); }

.msg .body {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── composer ──────────────────────────────────────────────────────────────── */
#composer {
  display: flex;
  gap: 10px;
  padding: 16px 0 24px;
  border-top: 1px solid var(--border);
}

#input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  padding: 10px 14px;
  resize: none;
  outline: none;
  transition: border-color 0.15s;
}

#input:focus { border-color: var(--accent); }
#input:disabled { opacity: 0.4; cursor: not-allowed; }

#send {
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #0d0f12;
  cursor: pointer;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  padding: 0 20px;
  transition: opacity 0.15s;
  white-space: nowrap;
}

#send:hover:not(:disabled) { opacity: 0.85; }
#send:disabled { opacity: 0.3; cursor: not-allowed; }