:root {
  --bg: #0f1115;
  --panel: #1a1d24;
  --cell: #222631;
  --cell-hover: #2d3445;
  --text: #f2f4f8;
  --muted: #9aa3b2;
  --accent: #4fc3f7;
  --fill: rgba(79, 195, 247, 0.35);
  --ok: #4caf50;
  --warn: #ffb300;
  --bad: #ef5350;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

body { display: flex; flex-direction: column; }

[hidden] { display: none !important; }

button {
  font: inherit;
  color: var(--text);
  background: var(--cell);
  border: 1px solid #3a4152;
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
}
button:hover { background: var(--cell-hover); }
button.big { font-size: 1.25rem; padding: 14px 28px; background: var(--accent); color: #0b1a22; border: none; font-weight: 600; }
button.big.secondary { background: var(--cell); color: var(--text); }

/* Schermate centrate */
.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px 16px;
  text-align: center;
}
.screen h1 { font-size: clamp(2.5rem, 8vw, 4rem); margin: 0; }
.lead { font-size: 1.3rem; color: var(--muted); margin: 0; }
.tips { text-align: left; max-width: 34rem; line-height: 1.6; color: var(--muted); }
.status { min-height: 1.5em; color: var(--muted); }
.source-link { margin: 0; font-size: 0.85rem; color: var(--muted); }
.source-link a { color: var(--muted); }
.status.error { color: var(--bad); }
/* Voce clonata, nella schermata iniziale */
.voice-card {
  width: min(100%, 36rem);
  background: var(--panel);
  border-radius: 12px;
  padding: 16px 20px;
  text-align: left;
}
.voice-card h2 { margin: 0 0 4px; font-size: 1.2rem; }
.voice-card .status { margin: 0 0 12px; }
.voice-controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.voice-controls input:not([type=file]) {
  flex: 1;
  min-width: 12rem;
  font: inherit;
  color: var(--text);
  background: var(--cell);
  border: 1px solid #3a4152;
  border-radius: 8px;
  padding: 6px 10px;
}
.file-button { position: relative; overflow: hidden; background: var(--cell); border: 1px solid #3a4152; border-radius: 8px; padding: 6px 12px; cursor: pointer; }
.file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.muted { color: var(--muted); font-size: 0.9rem; }
.record-panel { margin-top: 12px; padding: 12px; border: 1px solid var(--bad); border-radius: 10px; }
.record-panel p { margin: 0 0 8px; }
.read-aloud { font-size: 1.1rem; line-height: 1.6; color: var(--text); }
.record-time { font-variant-numeric: tabular-nums; font-size: 1.2rem; color: var(--bad); }
.record-time::before { content: "● "; animation: blink 1s steps(1) infinite; }
#record-preview { width: 100%; margin-top: 8px; }
.license { display: flex; gap: 8px; align-items: flex-start; font-size: 0.9rem; color: var(--muted); line-height: 1.4; }
.license a { color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
.last-spoken.pending::after { content: " …"; color: var(--muted); }
#start { overflow-y: auto; }

.row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
/* Risultato e avviso: testo in alto, celle grandi da fissare in basso */
#result, #prompt { flex: 1; display: flex; flex-direction: column; min-height: 0; }
#prompt { position: fixed; inset: 0; z-index: 12; background: var(--bg); }
.result-info, .prompt-info { text-align: center; padding: 16px; }
.result-info h2, .prompt-info h2 { margin: 0 0 8px; }
.prompt-info p { font-size: 1.3rem; color: var(--muted); }
#result-body { font-size: 1.1rem; line-height: 1.5; max-width: 40rem; margin: 0 auto; }
#result-body p { margin: 4px 0; }
#result-body .big-number { font-size: 2.2rem; font-weight: 700; color: var(--accent); }
.cells { flex: 1; display: grid; gap: 12px; padding: 12px; min-height: 40vh; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 12px 20px;
  font-size: 1.2rem;
  z-index: 25;
}

/* Suggerimento sul menu, a destra del testo */
#compose .hint { margin-left: auto; padding-left: 16px; font-size: 0.9rem; color: var(--muted); flex: none; }

/* Barra superiore */
#toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: var(--panel);
  min-height: 64px;
}
.cam { position: relative; flex: none; }
#video {
  width: 80px;
  height: 60px;
  object-fit: cover;
  border-radius: 6px;
  transform: scaleX(-1);
  border: 3px solid var(--bad);
  display: block;
}
#video.face { border-color: var(--ok); }
#video.blink { border-color: var(--warn); }
.face-status { position: absolute; left: 0; right: 0; bottom: -2px; font-size: 0.65rem; text-align: center; text-shadow: 0 0 3px #000; }
.last-spoken { flex: 1; font-size: 1.3rem; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.dwell { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); }
.dwell b { color: var(--text); min-width: 3.2em; text-align: center; }

/* Tabellone */
#board {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 12px;
  padding: 12px;
}
.cell {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8px;
  border-radius: 16px;
  background: var(--cell);
  font-size: clamp(1.2rem, 4.5vmin, 3rem);
  font-weight: 600;
  border: 3px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}
.cell .fill {
  position: absolute;
  inset: 0;
  background: var(--fill);
  transform: scaleY(var(--p, 0));
  transform-origin: bottom;
  pointer-events: none;
}
.cell .label { position: relative; white-space: pre-line; }
.cell .hint { position: absolute; bottom: 8px; left: 0; right: 0; font-size: 0.4em; font-weight: 400; color: var(--muted); }
.cell.hover { background: var(--cell-hover); border-color: var(--accent); }
.cell.empty { background: transparent; }
.cell.group .label { white-space: pre-line; letter-spacing: 0.08em; line-height: 1.3; }
.cell.letter { font-size: clamp(2rem, 9vmin, 5rem); }
.cell.suggest { color: var(--accent); background: #1b2733; }
.cell.cmd { background: #191c23; color: var(--muted); }
.cell.cmd.speak { color: var(--ok); }
.cell.cmd.hover { color: var(--text); }
.cell.cmd.save { color: var(--ok); }
.cell.cmd.remove { color: var(--bad); }

/* Testo in composizione */
#compose {
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 8px 20px;
  background: #0a0c10;
  border-bottom: 1px solid #262b36;
  font-size: clamp(1.4rem, 4vmin, 2.4rem);
  overflow: hidden;
  white-space: nowrap;
}
#compose-text { white-space: pre; }
#compose .caret {
  flex: none;
  width: 3px;
  height: 1.1em;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Modalità mouse: niente fotocamera né calibrazione */
#toolbar.mouse .cam, #toolbar.mouse #btn-calib, #toolbar.mouse #btn-last-result { display: none; }
.cell.selected { animation: flash 0.6s ease-out; }
@keyframes flash {
  from { background: var(--accent); color: #0b1a22; }
  to { background: var(--cell); }
}

#dasher { flex: 1; display: block; width: 100%; min-height: 0; }

/* Calibrazione */
#calib { position: fixed; inset: 0; background: #000; z-index: 10; }
#calib-target {
  position: absolute;
  width: 44px;
  height: 44px;
  margin: -22px 0 0 -22px;
  border-radius: 50%;
  background: var(--bad);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s; /* il movimento è animato da calibration.js */
}
#calib-target span { width: 8px; height: 8px; border-radius: 50%; background: #fff; }
#calib-target.collecting { transform: scale(0.5); background: var(--accent); }
#calib-msg {
  position: absolute;
  left: 50%;
  top: 30%;
  transform: translateX(-50%);
  width: min(90vw, 36rem);
  text-align: center;
  font-size: 1.3rem;
  color: var(--muted);
}

#diag { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 30; cursor: pointer; }

/* Conferma della calibrazione con il clic */
.click-mark {
  position: fixed;
  width: 44px;
  height: 44px;
  margin: -22px 0 0 -22px;
  border-radius: 50%;
  border: 3px solid var(--ok);
  pointer-events: none;
  z-index: 40;
  animation: click-mark 0.7s ease-out forwards;
}
.click-mark.skip { border-color: var(--muted); }
@keyframes click-mark { from { transform: scale(0.4); opacity: 1; } to { transform: scale(1.4); opacity: 0; } }

/* Punto dello sguardo */
#gaze-dot {
  position: fixed;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  background: rgba(79, 195, 247, 0.25);
  pointer-events: none;
  z-index: 20;
  will-change: transform;
}

@media (max-width: 600px) {
  .dwell { font-size: 0.85rem; }
  .last-spoken { font-size: 1rem; }
  #board { gap: 8px; padding: 8px; }
}