:root {
  --bg: #0b0f17;
  --panel: #141a26;
  --panel-2: #1c2434;
  --text: #e8edf6;
  --muted: #8a96ac;
  --accent: #4f8cff;
  --accent-2: #2ee6a6;
  --danger: #ff5c6c;
  --radius: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
}
.topbar h1 { font-size: 18px; margin: 0; font-weight: 650; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.tag {
  font-size: 11px; color: var(--muted);
  padding: 4px 10px; border-radius: 999px;
  background: var(--panel); border: 1px solid #26304a;
}
.install-btn {
  appearance: none; cursor: pointer;
  font-size: 11px; font-weight: 600; color: var(--accent);
  background: transparent; border: 1px solid var(--accent);
  padding: 4px 10px; border-radius: 999px;
}
.install-btn[hidden] { display: none; }
.install-btn:active { transform: scale(.96); }

/* Small transient toast (used for the iOS install hint). */
.toast {
  position: fixed; left: 50%; bottom: calc(92px + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(10px);
  background: var(--panel-2); color: var(--text);
  border: 1px solid #2b3550; border-radius: 12px;
  padding: 12px 16px; font-size: 13px; max-width: 88%;
  text-align: center; z-index: 40;
  opacity: 0; pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

main { flex: 1; display: flex; flex-direction: column; gap: 16px; padding: 0 16px 120px; }

/* --- status orb --------------------------------------------------------- */
.stage { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 4px 0 2px; }
.orb {
  position: relative;
  width: 96px; height: 96px;
  display: grid; place-items: center;
  color: var(--accent); /* rings follow the accent */
}
.orb::after {
  content: "";
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); /* core follows the accent by default */
  transition: background .3s ease, transform .3s ease;
}
.orb .ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid transparent;
}
/* State colors + animation. */
.orb[data-state="listening"]::after { background: var(--accent-2); }
.orb[data-state="thinking"]::after  { background: var(--warm, #ffcf6b); }
.orb[data-state="speaking"]::after  { background: var(--accent); }
.orb[data-state="interrupted"]::after { background: var(--danger); }
.orb[data-state="connecting"]::after { background: var(--muted); }
.orb[data-state="error"]::after { background: var(--danger); }

.orb[data-state="listening"] .ring,
.orb[data-state="speaking"] .ring,
.orb[data-state="connecting"] .ring {
  border-color: currentColor;
  animation: ripple 1.8s ease-out infinite;
}
.orb[data-state="listening"] { color: var(--accent-2); }
.orb[data-state="speaking"] { color: var(--accent); }
.orb[data-state="connecting"] { color: var(--muted); }
.orb .ring:nth-child(2) { animation-delay: .6s; }
.orb .ring:nth-child(3) { animation-delay: 1.2s; }
@keyframes ripple {
  0% { transform: scale(.5); opacity: .8; }
  100% { transform: scale(1); opacity: 0; }
}
.orb[data-state="thinking"]::after { animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.25); } }

.status-label { margin: 0; font-size: 14px; color: var(--muted); min-height: 1.2em; }

/* --- transcript (collapsible) ------------------------------------------- */
.transcript-section {
  background: var(--panel);
  border: 1px solid #26304a;
  border-radius: var(--radius);
  overflow: hidden;
}
.transcript-section.collapsed #transcript { display: none; }
.count-badge {
  font-size: 11px; color: var(--muted);
  background: var(--panel-2); border-radius: 999px;
  padding: 1px 7px; margin-left: 4px; font-weight: 500;
}
.transcript {
  padding: 14px;
  display: flex; flex-direction: column; gap: 10px;
  max-height: 40dvh;
  overflow-y: auto;
}
.placeholder { margin: 0; color: var(--muted); font-size: calc(14px * var(--tscale, 1)); line-height: 1.5; }

.bubble {
  max-width: 85%;
  padding: 10px 13px;
  border-radius: 14px;
  font-size: calc(15px * var(--tscale, 1)); line-height: 1.4;
  animation: rise .18s ease;
}
.bubble.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.bubble.user.pending { opacity: .55; }
.bubble.assistant { align-self: flex-start; background: var(--panel-2); border: 1px solid #2b3550; border-bottom-left-radius: 4px; }
@keyframes rise { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.tool-chip {
  align-self: center;
  font-size: 12px; color: var(--muted);
  background: #0c1220; border: 1px solid #26304a;
  padding: 5px 10px; border-radius: 999px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
.tool-chip .tool-name { color: var(--accent-2); }
.sys-note { align-self: center; font-size: 12px; color: var(--danger); }

/* --- tool result cards -------------------------------------------------- */
.cards { display: flex; flex-direction: column; gap: 10px; }
.card {
  background: var(--panel);
  border: 1px solid #26304a;
  border-radius: var(--radius);
  overflow: hidden;
  animation: rise .2s ease;
}
.card-head { padding: 10px 14px; font-size: 13px; font-weight: 600; border-bottom: 1px solid #26304a; }
.card-body { padding: 14px; }
.muted { color: var(--muted); font-size: 13px; }

.wx-temp { font-size: 34px; font-weight: 700; }
.wx-meta { display: flex; flex-wrap: wrap; gap: 12px; color: var(--muted); font-size: 13px; margin-top: 6px; }

.timer-disp { font-size: 40px; font-weight: 700; font-variant-numeric: tabular-nums; }
.card.timer.done { border-color: var(--accent-2); box-shadow: 0 0 0 1px var(--accent-2) inset; }
.card.timer.done .timer-disp { color: var(--accent-2); }

.card.notes ul { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 4px; font-size: 14px; }

/* --- controls ----------------------------------------------------------- */
.controls {
  position: fixed;
  left: 0; right: 0;
  bottom: 0;
  display: flex; justify-content: center; gap: 10px;
  padding: 14px 16px calc(16px + env(safe-area-inset-bottom));
  background: linear-gradient(transparent, var(--bg) 40%);
}
.btn {
  appearance: none; border: 1px solid #2b3550;
  background: var(--panel-2); color: var(--text);
  padding: 15px 26px; font-size: 16px; font-weight: 650;
  border-radius: 999px; cursor: pointer;
  transition: transform .08s ease, background .2s ease;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 10px 30px rgba(79,140,255,.35); }
.btn.primary.connected { background: var(--danger); border-color: var(--danger); box-shadow: 0 10px 30px rgba(255,92,108,.35); }
.btn.ghost { background: transparent; }
.btn.ghost.muted { color: var(--danger); border-color: var(--danger); }

#remoteAudio { display: none; }

/* --- control panel ------------------------------------------------------ */
.panel {
  background: var(--panel);
  border: 1px solid #26304a;
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
}
.panel-head h2 { margin: 0; font-size: 13px; font-weight: 600; color: var(--muted); }
.panel-toggle {
  appearance: none; border: 0; background: transparent; color: var(--muted);
  font-size: 14px; cursor: pointer; transition: transform .2s ease;
}
.panel.collapsed .panel-toggle,
.transcript-section.collapsed .panel-toggle { transform: rotate(-90deg); }
.panel-body {
  display: flex; flex-direction: column; gap: 4px;
  padding: 4px 14px 12px;
}
.panel.collapsed .panel-body { display: none; }

.ctl-row {
  display: flex; align-items: center; gap: 12px;
  min-height: 40px;
}
.ctl-label { flex: 0 0 84px; font-size: 14px; }
.ctl-row .val {
  margin-left: auto; font-size: 12px; color: var(--muted);
  font-variant-numeric: tabular-nums; text-transform: capitalize;
}
.ctl-row select {
  margin-left: auto;
  background: var(--panel-2); color: var(--text);
  border: 1px solid #2b3550; border-radius: 8px;
  padding: 6px 10px; font-size: 13px;
}
.ctl-row input[type="color"] {
  margin-left: auto;
  width: 40px; height: 28px; padding: 0;
  border: 1px solid #2b3550; border-radius: 8px; background: none; cursor: pointer;
}
.range-holder { margin-left: auto; display: flex; align-items: center; gap: 10px; flex: 1; max-width: 60%; }
.range-holder input[type="range"] { flex: 1; accent-color: var(--accent); }
.range-holder .val { margin-left: 0; min-width: 40px; text-align: right; }

/* Switch */
.switch { margin-left: auto; position: relative; display: inline-block; width: 44px; height: 26px; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.switch-track {
  position: absolute; inset: 0; border-radius: 999px;
  background: var(--panel-2); border: 1px solid #2b3550; transition: background .2s ease;
}
.switch-track::after {
  content: ""; position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--muted); transition: transform .2s ease, background .2s ease;
}
.switch input:checked + .switch-track { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(18px); background: #fff; }

/* --- brightness dimmer -------------------------------------------------- */
.dim {
  position: fixed; inset: 0;
  background: #000; opacity: 0;
  pointer-events: none; z-index: 5;
  transition: opacity .2s ease;
}

/* --- light theme (Theme control) ---------------------------------------- */
:root[data-theme="light"] {
  --bg: #f4f6fb; --panel: #ffffff; --panel-2: #eef2f9;
  --text: #0b0f17; --muted: #5b6577;
}
:root[data-theme="light"] .tag,
:root[data-theme="light"] .stage .status-label,
:root[data-theme="light"] .transcript,
:root[data-theme="light"] .card,
:root[data-theme="light"] .card-head,
:root[data-theme="light"] .panel,
:root[data-theme="light"] .bubble.assistant,
:root[data-theme="light"] .btn,
:root[data-theme="light"] .ctl-row select,
:root[data-theme="light"] .ctl-row input[type="color"],
:root[data-theme="light"] .switch-track { border-color: #d5dce8; }
:root[data-theme="light"] .bubble.assistant,
:root[data-theme="light"] .panel-2,
:root[data-theme="light"] .switch-track { background: #eef2f9; }
:root[data-theme="light"] .tool-chip { background: #eef2f9; border-color: #d5dce8; }

/* --- density (Density control) ------------------------------------------ */
:root[data-density="compact"] main { gap: 8px; }
:root[data-density="compact"] .transcript { padding: 8px; gap: 6px; }
:root[data-density="compact"] .bubble { padding: 7px 10px; }
:root[data-density="spacious"] main { gap: 26px; }
:root[data-density="spacious"] .transcript { padding: 22px; gap: 14px; }
:root[data-density="spacious"] .bubble { padding: 14px 17px; }

/* --- full-site lock ----------------------------------------------------- */
.lock {
  position: fixed; inset: 0;
  background: var(--bg);
  display: grid; place-items: center;
  z-index: 100; padding: 24px;
}
.lock[hidden] { display: none; }
.lock-card {
  width: 100%; max-width: 340px;
  display: flex; flex-direction: column;
}
.lock-checking { text-align: center; color: var(--muted); font-size: 28px; letter-spacing: 4px; }
.lock-form {
  display: flex; flex-direction: column; gap: 12px;
  background: var(--panel);
  border: 1px solid #26304a;
  border-radius: var(--radius);
  padding: 22px;
  animation: rise .18s ease;
}
.lock-form h2 { margin: 0; font-size: 18px; }
.lock-msg { margin: 0; font-size: 13px; color: var(--muted); }
.lock-msg.err { color: var(--danger); }
#lockInput {
  width: 100%; padding: 12px;
  border-radius: 10px; border: 1px solid #2b3550;
  background: var(--panel-2); color: var(--text);
  font-size: 16px;
}
.lock-form .btn { width: 100%; }