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

:root {
  --bg: #0b1020;
  --card: #161c30;
  --card2: #0f1424;
  --text: #e6e9f2;
  --muted: #9aa3bd;
  --accent: #4f8cff;
  --ok: #34d399;
  --err: #f87171;
  --line: #243049;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #16203c 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.app { width: 100%; max-width: 460px; display: flex; flex-direction: column; gap: 18px; }
.hidden { display: none !important; }

header { text-align: center; margin-top: 8px; }
h1 { font-size: 1.9rem; letter-spacing: 0.5px; }
.tag { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }

/* UI language selector (flags + 2-letter), own row above the title */
.uilang { display: flex; justify-content: flex-end; gap: 6px; margin-bottom: 10px; }
.flag {
  background: var(--card2); border: 1px solid var(--line); color: var(--muted);
  border-radius: 8px; padding: 4px 8px; font-size: 0.8rem; font-weight: 700; cursor: pointer;
}
.flag.active { color: var(--text); border-color: var(--accent); background: #1b2540; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* setup */
.field { display: flex; flex-direction: column; gap: 10px; }
.field > span { color: var(--muted); font-size: 0.85rem; }
.pair { display: flex; align-items: center; gap: 12px; }
.fixed {
  flex: 1; text-align: center; padding: 12px; border-radius: 10px;
  background: var(--card2); border: 1px solid var(--line); font-weight: 600;
}
.arrows { color: var(--muted); font-size: 1.2rem; }
select {
  flex: 1; padding: 12px; border-radius: 10px; font-size: 1rem; font-weight: 600;
  background: var(--card2); color: var(--text); border: 1px solid var(--line);
  text-align: center; appearance: none; cursor: pointer;
}

.modes { display: flex; flex-direction: column; gap: 12px; }
.mode {
  text-align: left; padding: 16px; border-radius: 14px; cursor: pointer;
  background: var(--card2); border: 1px solid var(--line); color: var(--text);
  display: flex; flex-direction: column; gap: 4px; transition: border-color 0.15s;
}
.mode:hover { border-color: var(--accent); }
.mode b { font-size: 1.05rem; }
.mode small { color: var(--muted); font-size: 0.83rem; }

/* shared */
.row { display: flex; align-items: center; justify-content: space-between; }
.pill {
  font-size: 0.8rem; padding: 5px 12px; border-radius: 999px;
  background: var(--card2); border: 1px solid var(--line); color: var(--muted);
}
.pill.ok { color: var(--ok); border-color: rgba(52, 211, 153, 0.4); }
.pill.err { color: var(--err); border-color: rgba(248, 113, 113, 0.4); }
.voice-tag { font-size: 0.8rem; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 0.8rem; }
.center { text-align: center; }

button.start {
  width: 100%; padding: 18px; font-size: 1.2rem; font-weight: 700; border: none;
  border-radius: 14px; color: white; cursor: pointer;
  background: linear-gradient(180deg, #5b93ff, #3b74e6);
  transition: transform 0.05s ease;
}
button.start:active { transform: scale(0.99); }
button.start.stop { background: linear-gradient(180deg, #f0616a, #d84450); }

.hint { color: var(--muted); font-size: 0.85rem; line-height: 1.4; text-align: center; }

/* single-phone "OK to talk" indicator */
.talk-indicator {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px; border-radius: 12px; font-weight: 800; font-size: 1.05rem;
  border: 1px solid var(--line);
}
.talk-indicator .dot { width: 14px; height: 14px; border-radius: 50%; flex: 0 0 auto; }
.talk-indicator.go { background: rgba(52, 211, 153, 0.12); color: var(--ok); border-color: rgba(52, 211, 153, 0.45); }
.talk-indicator.go .dot { background: var(--ok); box-shadow: 0 0 12px var(--ok); }
.talk-indicator.wait { background: rgba(248, 113, 113, 0.12); color: var(--err); border-color: rgba(248, 113, 113, 0.45); }
.talk-indicator.wait .dot { background: var(--err); }

/* full-screen talk state: the whole page glows green (talk) or red (wait) */
body { transition: background 0.25s ease; }
body.talk-go { background: radial-gradient(circle at 50% 22%, #18c574 0%, #0a7a45 78%); }
body.talk-wait { background: radial-gradient(circle at 50% 22%, #ef5a56 0%, #9e1b1b 78%); }
body.talk-go #solo, body.talk-wait #solo,
body.talk-go #room, body.talk-wait #room {
  background: transparent; border-color: transparent; box-shadow: none;
}
body.talk-go .talk-indicator, body.talk-wait .talk-indicator {
  background: transparent; border: none; color: #fff;
  font-size: 2rem; font-weight: 900; letter-spacing: 1px; text-transform: uppercase; padding: 6px;
}
body.talk-go .talk-indicator .dot, body.talk-wait .talk-indicator .dot {
  width: 20px; height: 20px; background: #fff; box-shadow: 0 0 16px rgba(255, 255, 255, 0.85);
}
body.talk-go .pill, body.talk-wait .pill,
body.talk-go .voice-tag, body.talk-wait .voice-tag { color: rgba(255, 255, 255, 0.85); }

.link {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font-size: 0.9rem; padding: 4px; text-align: left;
}
.back { color: var(--muted); align-self: flex-start; margin-top: 4px; }

/* room */
.room-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.code { font-size: 1.7rem; font-weight: 800; letter-spacing: 6px; font-variant-numeric: tabular-nums; }
.qr-wrap { background: #fff; padding: 6px; border-radius: 10px; line-height: 0; }
.qr-wrap img { width: 110px; height: 110px; display: block; }
.share { display: flex; align-items: center; justify-content: space-between; gap: 10px; }

.roles { display: flex; gap: 12px; margin-top: 8px; }
.role {
  flex: 1; padding: 14px; border-radius: 12px; font-size: 1rem; font-weight: 700;
  cursor: pointer; color: var(--text); background: var(--card2); border: 1px solid var(--line);
}
.role:hover:not(:disabled) { border-color: var(--accent); }
.role:disabled { opacity: 0.45; cursor: default; }

/* live controls (mute + stop/start on one row) */
.live-controls { display: flex; gap: 10px; }
.live-controls .start { flex: 2; width: auto; margin-bottom: 0; }
.secondary {
  flex: 1; width: auto; padding: 14px; border-radius: 12px; font-size: 1rem; font-weight: 700;
  cursor: pointer; background: var(--card2); color: var(--text); border: 1px solid var(--line);
}
.secondary.active { background: #4a2b2b; border-color: #7a3b3b; color: #ffd9d9; }

/* room entry: create or join */
#roomStart { display: flex; flex-direction: column; gap: 12px; }
.or { text-align: center; color: var(--muted); font-size: 0.85rem; }
.join { display: flex; gap: 10px; }
#joinCode {
  flex: 1; padding: 14px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--card2); color: var(--text); font-size: 1.1rem; text-align: center;
  letter-spacing: 4px; font-variant-numeric: tabular-nums;
}
.join .role { flex: 0 0 auto; padding: 14px 22px; }

/* connection banner + lost-connection red screen */
.conn-banner { text-align: center; padding: 10px 12px; border-radius: 10px; font-weight: 800; font-size: 0.9rem; }
.conn-banner.lost { background: rgba(158, 27, 27, 0.85); color: #fff; border: 1px solid #ef5a56; }
.conn-banner.ok { background: rgba(10, 122, 69, 0.85); color: #fff; border: 1px solid #18c574; }
body.conn-lost { background: radial-gradient(circle at 50% 22%, #e0524f 0%, #7a1414 82%); transition: background 0.25s ease; }
body.conn-lost #room { background: transparent; border-color: transparent; box-shadow: none; }
body.conn-lost .pill, body.conn-lost .voice-tag, body.conn-lost .muted { color: rgba(255, 255, 255, 0.9); }

/* saved rooms: account form + bridge list */
#account input, #account select { width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card2); color: var(--text); font-size: 1rem; }
#registerExtra { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
.bridge-row {
  width: 100%; text-align: left; background: var(--card2); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px; cursor: pointer; color: var(--text);
  display: flex; flex-direction: column; gap: 2px;
}
.bridge-row:hover { border-color: var(--accent); }
.bridge-name { font-weight: 700; }
.bridge-last { color: var(--muted); font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* two-phone text input */
.text-row { display: flex; gap: 8px; margin-top: 10px; }
.text-row input {
  flex: 1; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card2); color: var(--text); font-size: 1rem;
}
.text-row .role { flex: 0 0 auto; padding: 12px 18px; }

/* transcripts */
.log { display: flex; flex-direction: column; gap: 8px; min-height: 60px; }
.line {
  padding: 10px 14px; border-radius: 12px; font-size: 0.95rem; line-height: 1.35;
  max-width: 88%; word-wrap: break-word;
}
.line.user { align-self: flex-end; background: #23407a; color: #eaf1ff; }
.line.agent { align-self: flex-start; background: var(--card2); border: 1px solid var(--line); }
.line.them { align-self: flex-start; background: #1d2b1f; border: 1px solid #2f5136; color: #d7f5dd; }
.line.err { align-self: center; background: rgba(248, 113, 113, 0.12); color: var(--err); font-size: 0.85rem; }
.line.note {
  align-self: flex-start; background: rgba(79, 140, 255, 0.1); border: 1px solid rgba(79, 140, 255, 0.35);
  color: #cbdcff; font-size: 0.82rem; font-style: italic; max-width: 92%;
}

/* Cultural read card */
.culture-card {
  background: var(--card2); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; display: flex; flex-direction: column; gap: 6px;
}
.cc-title { font-weight: 700; font-size: 0.9rem; }
.cc-point { color: var(--text); font-size: 0.85rem; line-height: 1.4; }
.cc-friction { color: var(--muted); font-size: 0.8rem; border-top: 1px solid var(--line); padding-top: 6px; margin-top: 2px; }

/* Cultural intent toggle */
.toggle { display: flex; align-items: flex-start; gap: 10px; cursor: pointer; padding: 4px 2px; }
.toggle input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--accent); }
.toggle b { display: block; font-size: 0.9rem; }
.toggle small { display: block; color: var(--muted); font-size: 0.78rem; }

/* Listen mode: big, readable live captions */
.log.big { gap: 10px; }
.log.big .line { font-size: 1.3rem; line-height: 1.45; max-width: 100%; padding: 12px 16px; }

footer { text-align: center; color: var(--muted); font-size: 0.78rem; padding-bottom: 10px; }