:root {
  --bg: #0f1117;
  --panel: #171a21;
  --panel-2: #1f232c;
  --bubble-user: #2563eb;
  --bubble-ai: #22262f;
  --text: #e8eaf0;
  --muted: #8b93a7;
  --accent: #4f9cff;
  --danger: #ef4444;
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Noto Sans Bengali", "Hind Siliguri", system-ui, sans-serif;
  display: flex;
  flex-direction: column;
  height: 100dvh;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid #2a2f3a;
  flex: 0 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.brand .title { font-weight: 600; font-size: 1.02rem; }
.brand .subtitle { color: var(--muted); font-size: .72rem; }
.controls { display: flex; align-items: center; gap: 10px; }
.voice-pick { display: flex; align-items: center; gap: 6px; font-size: .82rem; color: var(--muted); }
.voice-pick select {
  background: var(--panel-2); color: var(--text); border: 1px solid #2a2f3a;
  border-radius: 8px; padding: 5px 8px; font-size: .85rem;
}
.ghost {
  background: transparent; color: var(--text); border: 1px solid #2a2f3a;
  border-radius: 8px; padding: 6px 8px; cursor: pointer;
}
.ghost:hover { background: var(--panel-2); }

/* ---------- messages ---------- */
.messages { flex: 1 1 auto; overflow-y: auto; padding: 18px 16px 8px; }
.row { display: flex; margin: 10px 0; }
.row.user { justify-content: flex-end; }
.bubble {
  max-width: 78%; padding: 10px 14px; border-radius: var(--radius);
  line-height: 1.55; white-space: pre-wrap; word-break: break-word; font-size: .98rem;
}
.row.user .bubble { background: var(--bubble-user); color: #fff; border-bottom-right-radius: 4px; }
.row.ai .bubble { background: var(--bubble-ai); border: 1px solid #2a2f3a; border-bottom-left-radius: 4px; }
.bubble.speaking { box-shadow: 0 0 0 2px rgba(79,156,255,.45); }
.bubble .novoice { color: var(--muted); font-size: .72rem; display: block; margin-top: 4px; }

/* ---------- banner ---------- */
.banner {
  flex: 0 0 auto; margin: 0 16px; padding: 8px 12px; border-radius: 10px;
  background: #2a1a1f; color: #ffb4bf; border: 1px solid #5a2a35; font-size: .85rem;
}
.banner.warn { background: #2a2616; color: #ffe2a0; border-color: #5a4a1a; }

/* ---------- compose ---------- */
.compose {
  flex: 0 0 auto; display: flex; gap: 8px; align-items: center;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: var(--panel); border-top: 1px solid #2a2f3a;
}
.compose input {
  flex: 1 1 auto; background: var(--panel-2); color: var(--text);
  border: 1px solid #2a2f3a; border-radius: 12px; padding: 12px 14px; font-size: 1rem;
  outline: none;
}
.compose input:focus { border-color: var(--accent); }
.mic, .send {
  border: none; border-radius: 12px; padding: 12px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; color: #fff;
}
.mic { background: var(--panel-2); border: 1px solid #2a2f3a; color: var(--text); }
.mic.listening { background: var(--danger); color: #fff; }
.send { background: var(--accent); padding: 12px 16px; font-size: 1.1rem; }
.send.stop { background: var(--danger); padding: 12px 14px; }
.mic:active { transform: scale(.96); }
.send:disabled { opacity: .5; cursor: default; }

.hidden { display: none !important; }

@media (max-width: 600px) {
  .brand .subtitle { display: none; }
  .bubble { max-width: 88%; }
}

/* ============ call gallery + call screen ============ */
#gallery, #callScreen { flex: 1 1 auto; display: flex; flex-direction: column; min-height: 0; }

/* ---------- gallery ---------- */
.gallery-body { flex: 1 1 auto; overflow-y: auto; padding: 22px 18px 32px; }
.gallery-hint { color: var(--muted); font-size: .9rem; margin: 4px 2px 18px; }
.persona-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}
.persona-card {
  background: var(--panel); border: 1px solid #2a2f3a; border-radius: 18px;
  padding: 20px 16px 16px; display: flex; flex-direction: column; align-items: center;
  gap: 10px; cursor: pointer; color: var(--text); text-align: center;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
  position: relative;
}
.persona-card:hover {
  transform: translateY(-3px); border-color: var(--accent);
  box-shadow: 0 10px 26px rgba(0,0,0,.35);
}
.persona-card:active { transform: translateY(-1px) scale(.99); }
.card-avatar {
  width: 76px; height: 76px; border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-size: 1.7rem; font-weight: 600; color: #fff;
  overflow: hidden; box-shadow: 0 4px 14px rgba(0,0,0,.35);
}
.card-avatar img { width: 100%; height: 100%; object-fit: cover; }
.card-name { font-weight: 600; font-size: 1rem; }
.card-tag { color: var(--muted); font-size: .74rem; }
.card-call {
  margin-top: 4px; width: 40px; height: 40px; border-radius: 50%;
  background: #12331f; color: #55d98a; border: 1px solid #1f5a34;
  display: flex; align-items: center; justify-content: center;
}
.persona-card:hover .card-call { background: #17b866; color: #fff; border-color: #17b866; }

/* ---------- call screen ---------- */
.call-screen {
  background: radial-gradient(1200px 700px at 50% -10%, #1b2540 0%, var(--bg) 60%);
  align-items: center;
}
.call-top {
  width: 100%; padding: 26px 18px 4px; text-align: center; flex: 0 0 auto;
}
.call-status { font-size: 1.05rem; color: var(--text); letter-spacing: .3px; }
.call-timer { color: var(--muted); font-size: .85rem; margin-top: 4px; font-variant-numeric: tabular-nums; }

.call-stage {
  flex: 1 1 auto; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 22px; width: 100%; padding: 12px 20px; min-height: 0;
}
.call-avatar { position: relative; width: 160px; height: 160px; display: flex; align-items: center; justify-content: center; }
.call-avatar-inner {
  width: 132px; height: 132px; border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-size: 3rem; font-weight: 600; color: #fff; overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,.5); z-index: 2;
}
.call-avatar-inner img { width: 100%; height: 100%; object-fit: cover; }
.call-avatar .ring {
  position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--accent);
  opacity: 0; z-index: 1;
}
/* calling: gentle expanding rings; speaking: faster glow; listening: soft breathe */
.call-avatar.calling .ring, .call-avatar.speaking .ring { animation: ring-pulse 2.2s ease-out infinite; }
.call-avatar.speaking .ring { border-color: #55d98a; animation-duration: 1.4s; }
.call-avatar.calling .ring2, .call-avatar.speaking .ring2 { animation-delay: .5s; }
.call-avatar.calling .ring3, .call-avatar.speaking .ring3 { animation-delay: 1s; }
/* listening: the avatar reacts to the caller's live mic level (--level, set from
   the RMS of each captured frame) so it's visible the mic is hearing them. */
.call-avatar.listening .call-avatar-inner {
  transform: scale(var(--level, 1));
  transition: transform 90ms ease-out, box-shadow 90ms ease-out;
  box-shadow: 0 0 0 calc(3px + (var(--level, 1) - 1) * 80px) rgba(79,156,255,.35),
              0 8px 30px rgba(0,0,0,.5);
}
.call-avatar.thinking .call-avatar-inner { animation: breathe 1s ease-in-out infinite; }

@keyframes ring-pulse {
  0%   { transform: scale(.85); opacity: .7; }
  80%  { opacity: 0; }
  100% { transform: scale(1.6); opacity: 0; }
}
@keyframes breathe {
  0%,100% { transform: scale(1); }
  50%     { transform: scale(1.05); }
}

.call-name { font-size: 1.5rem; font-weight: 600; }
.call-caption {
  color: var(--muted); font-size: 1rem; line-height: 1.5; max-width: 560px;
  text-align: center; min-height: 1.5em; padding: 0 10px;
}
/* animated "•••" shown while the bot is thinking (before the first token/audio),
   so the wait reads as intentional rather than a frozen screen. */
.typing { display: inline-flex; gap: 6px; align-items: center; height: 1.5em; }
.typing i { width: 7px; height: 7px; border-radius: 50%; background: currentColor;
  opacity: .3; animation: typing-blink 1.2s infinite ease-in-out; }
.typing i:nth-child(2) { animation-delay: .2s; }
.typing i:nth-child(3) { animation-delay: .4s; }
@keyframes typing-blink {
  0%, 60%, 100% { opacity: .25; transform: translateY(0); }
  30%           { opacity: 1;  transform: translateY(-3px); }
}

/* ---------- call transcript scrollback ---------- */
.call-transcript {
  width: 100%; max-width: 640px; max-height: 32vh; overflow-y: auto;
  padding: 2px 6px; margin-top: 6px; display: flex; flex-direction: column; gap: 8px;
  scrollbar-width: thin;
}
.call-transcript:empty { display: none; }
.call-transcript .turn { display: flex; flex-direction: column; gap: 2px; }
.call-transcript .turn.user { align-items: flex-end; }
.call-transcript .turn.assistant { align-items: flex-start; }
.call-transcript .turn-label { font-size: .68rem; color: var(--muted); padding: 0 4px; }
.call-transcript .turn-text {
  max-width: 86%; padding: 8px 12px; border-radius: 12px; font-size: .92rem;
  line-height: 1.45; white-space: pre-wrap; word-break: break-word;
}
.call-transcript .turn.user .turn-text { background: var(--bubble-user); color: #fff; border-bottom-right-radius: 4px; }
.call-transcript .turn.assistant .turn-text { background: var(--bubble-ai); border: 1px solid #2a2f3a; border-bottom-left-radius: 4px; }

.call-controls { flex: 0 0 auto; display: flex; gap: 40px; align-items: center; padding: 20px 0 calc(30px + env(safe-area-inset-bottom)); }
.call-btn {
  width: 64px; height: 64px; border-radius: 50%; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; color: #fff;
  transition: transform .12s ease, filter .12s ease;
}
.call-btn:active { transform: scale(.94); }
.call-btn.mute { background: var(--panel-2); border: 1px solid #2a2f3a; color: var(--text); }
.call-btn.mute.active { background: var(--danger); color: #fff; border-color: var(--danger); }
.call-btn.hangup { background: var(--danger); box-shadow: 0 6px 18px rgba(239,68,68,.45); }
.call-btn.hangup svg { transform: rotate(135deg); }
.call-btn.hangup:hover { filter: brightness(1.08); }

@media (max-width: 600px) {
  .call-avatar { width: 140px; height: 140px; }
  .call-avatar-inner { width: 116px; height: 116px; font-size: 2.6rem; }
  .call-name { font-size: 1.3rem; }
}

/* ---------- admin portal ---------- */
.topbar a.ghost { text-decoration: none; line-height: 1; }
.gate {
  flex: 1 1 auto; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 12px; padding: 24px; text-align: center;
}
.gate input {
  background: var(--panel-2); color: var(--text); border: 1px solid #2a2f3a;
  border-radius: 10px; padding: 11px 14px; font-size: 1rem; min-width: 260px; outline: none;
}
.gate input:focus { border-color: var(--accent); }

.admin { flex: 1 1 auto; display: flex; min-height: 0; }
.persona-list {
  flex: 0 0 260px; border-right: 1px solid #2a2f3a; background: var(--panel);
  overflow-y: auto; padding: 12px;
}
.persona-list ul { list-style: none; margin: 10px 0 0; padding: 0; }
.persona-list li {
  padding: 9px 11px; border-radius: 10px; cursor: pointer; color: var(--text);
  border: 1px solid transparent; margin-bottom: 4px; font-size: .92rem;
}
.persona-list li:hover { background: var(--panel-2); }
.persona-list li.active { background: var(--panel-2); border-color: var(--accent); }
.persona-list li .meta { color: var(--muted); font-size: .72rem; display: block; margin-top: 2px; }

.persona-editor { flex: 1 1 auto; overflow-y: auto; padding: 20px 22px; }
.persona-editor h2 { margin: 0 0 16px; font-size: 1.05rem; }
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.field label { font-size: .8rem; color: var(--muted); }
.field input, .field textarea, .field select {
  background: var(--panel-2); color: var(--text); border: 1px solid #2a2f3a;
  border-radius: 10px; padding: 10px 12px; font-size: .95rem; outline: none; width: 100%;
  font-family: inherit;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); }
.field textarea { min-height: 110px; resize: vertical; line-height: 1.5; }
.field.row2 { flex-direction: row; gap: 20px; }
.field.row2 > div { flex: 1 1 0; display: flex; flex-direction: column; gap: 5px; }
.field-inline { display: flex; align-items: center; gap: 8px; }
.field-inline input { width: auto; }

.btn {
  background: var(--accent); color: #fff; border: none; border-radius: 10px;
  padding: 10px 16px; font-size: .95rem; cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary { background: var(--panel-2); color: var(--text); border: 1px solid #2a2f3a; }
.btn.danger { background: var(--danger); }
.btn:disabled { opacity: .5; cursor: default; }
.actions { display: flex; gap: 10px; margin-top: 6px; flex-wrap: wrap; }

.docs { margin-top: 26px; border-top: 1px solid #2a2f3a; padding-top: 18px; }
.docs h3 { margin: 0 0 12px; font-size: .95rem; }
.doc-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--panel); border: 1px solid #2a2f3a; border-radius: 10px;
  padding: 10px 12px; margin-bottom: 8px; font-size: .88rem;
}
.doc-item .doc-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { font-size: .68rem; padding: 2px 7px; border-radius: 999px; margin-left: 8px; }
.tag.ok { background: #12331f; color: #7ee0a2; border: 1px solid #1f5a34; }
.tag.warn { background: #33301a; color: #ffe2a0; border: 1px solid #5a4a1a; }
.hint { color: var(--muted); font-size: .78rem; margin: 4px 0 0; }

.avatar-panel { margin-top: 26px; border-top: 1px solid #2a2f3a; padding-top: 18px; }
.avatar-panel h3 { margin: 0 0 12px; font-size: .95rem; }
.avatar-row { display: flex; align-items: center; gap: 16px; }
.avatar-preview {
  width: 72px; height: 72px; border-radius: 50%; overflow: hidden; flex: 0 0 auto;
  background: var(--panel-2); border: 1px solid #2a2f3a; display: flex;
  align-items: center; justify-content: center; color: var(--muted); font-size: .7rem;
}
.avatar-preview img { width: 100%; height: 100%; object-fit: cover; }