:root {
  --accent: #2F5CFF;
  --accent-dim: #8FA3FF;
  --alert: #FF4D4D;
  --text: #E6EDF3;
  --bg: #101418;
  --panel: #0B1220;
  --line: #12314A;
  --muted: #8A97A8;
  --user-bg: #D7E0EA;
  --user-fg: #101418;
  --withdrawn: #6B7380;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font: 15px/1.45 "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
header .mark {
  width: 28px; height: 28px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--accent-dim), var(--accent) 55%, #06101f 100%);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 60%, transparent);
}
header h1 { font-size: 16px; font-weight: 600; margin: 0; letter-spacing: 0.08em; }
header .tag { color: var(--muted); font-size: 13px; margin-left: auto; }
#status { font-size: 12px; color: var(--accent-dim); letter-spacing: 0.04em; }

#gate {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; padding: 24px;
}
#gate p { max-width: 36rem; color: var(--muted); text-align: center; }
#gate input[type=password], #gate input[type=text] {
  width: min(28rem, 90vw); padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: #070b12; color: var(--text);
}
button {
  background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 8px 14px; font: inherit; cursor: pointer;
}
button:hover { filter: brightness(1.08); }
button.ghost { background: transparent; color: var(--accent-dim); border: 1px solid var(--line); }
button:disabled { opacity: 0.5; cursor: default; }

#app { flex: 1; display: none; flex-direction: column; min-height: 0; }
#app.open { display: flex; }
#log {
  flex: 1; overflow: auto; padding: 18px 20px 8px; display: flex; flex-direction: column; gap: 10px;
}
.msg { max-width: 36rem; padding: 10px 14px; border-radius: 14px; position: relative; }
.msg.user { align-self: flex-end; background: var(--user-bg); color: var(--user-fg); }
.msg.assistant { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); }
.msg.partial { align-self: flex-start; opacity: 0.75; font-style: italic; border: 1px dashed var(--line); background: transparent; }
.msg.withdrawn { color: var(--withdrawn); text-decoration: line-through; background: transparent; border: 1px solid var(--line); }
.msg .cap { display: block; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 4px; opacity: 0.7; font-style: normal; text-decoration: none; }
.msg.interrupted .played { color: var(--text); }
.msg.interrupted .rest { color: var(--muted); text-decoration: line-through; }
.msg.interrupted { border-left: 3px solid var(--withdrawn); }

#composer {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px 16px; border-top: 1px solid var(--line); background: var(--panel);
}
#composer input[type=text] {
  flex: 1; padding: 10px 12px; border-radius: 20px;
  border: 1px solid var(--line); background: #070b12; color: var(--text);
}
#mic {
  width: 48px; height: 48px; border-radius: 50%; padding: 0;
  background: #182033; border: 2px solid var(--line); color: var(--text);
  font-size: 11px; letter-spacing: 0.08em; font-weight: 600;
}
#mic.held, #mic.listening { background: var(--accent); border-color: var(--accent-dim); }
#mic.speaking { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 45%, transparent); }
#modes { display: flex; gap: 0; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
#modes button {
  border-radius: 0; background: transparent; color: var(--muted);
  padding: 8px 12px; font-size: 12px; letter-spacing: 0.04em;
}
#modes button.on { background: var(--accent); color: #fff; }
#error { color: var(--alert); padding: 0 18px 8px; font-size: 13px; min-height: 1em; }
#secure-warn { display: none; color: var(--alert); max-width: 36rem; text-align: center; }