:root {
  --blue: #1565c0;
  --blue-dark: #0d47a1;
  --ink: #1a1a1a;
  --muted: #5f6368;
  --line: #cbd5e1;
  --ok: #2e7d32;
  --bad: #c62828;
  --bg: #ffffff;
  --card: #ffffff;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  -webkit-text-size-adjust: 100%;
}

#app {
  max-width: 560px;
  margin: 0 auto;
  padding: 12px 14px 40px;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  margin-bottom: 6px;
}
.topbar h1 { font-size: 20px; margin: 0; }
#backBtn {
  border: 0; background: transparent; color: var(--blue);
  font-size: 22px; padding: 6px 8px; cursor: pointer; border-radius: 8px;
}
#backBtn[hidden] { display: none; }

section[data-view][hidden] { display: none; }

button, .btn {
  font: inherit;
  color: #fff;
  background: var(--blue);
  border: 0;
  border-radius: 12px;
  padding: 13px 14px;
  cursor: pointer;
  text-align: center;
}
button:active { filter: brightness(0.94); }
button:disabled { opacity: 0.55; }

.btn-row { display: flex; gap: 8px; }
.btn-row > button { flex: 1; min-width: 0; }

.big { font-size: 18px; padding: 17px 14px; }
.wide { display: block; width: 100%; }
.mt { margin-top: 12px; }
.mt-sm { margin-top: 8px; }

.ghost { background: #eef2f7; color: var(--blue-dark); }
.hr { height: 1px; background: #dddddd; margin: 20px 0 14px; border: 0; }

.progress { font-weight: 700; color: var(--ink); margin: 4px 0 10px; }
.muted { color: var(--muted); font-size: 14px; }
.center { text-align: center; }
.label { color: var(--ink); font-size: 15px; margin-top: 12px; }

select {
  font: inherit; padding: 10px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
}

/* ---- home ---- */
#home h1 { font-size: 22px; }
.menu button { width: 100%; margin-top: 12px; }
.settings-row { display: flex; align-items: center; gap: 10px; margin-top: 18px; }

/* ---- scramble ---- */
#board {
  position: relative;
  margin-top: 10px;
  min-height: 300px;
  background: #fafafa;
  border-radius: 12px;
  padding: 12px;
}
#slots, #tray {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
#tray { margin-top: 28px; }
.slot, .tile {
  width: 46px; height: 46px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700;
}
.slot {
  border: 2px dashed #b0bec5;
  background: rgba(0,0,0,0.04);
}
.slot-gap { width: 22px; height: 46px; }
.tile {
  border: 2px solid #90a4ae;
  background: #fff; color: #1a1a1a;
  touch-action: none; user-select: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.18);
}
.tile.drag { position: fixed; z-index: 999; transform: scale(1.12); pointer-events: none; }
.tile.good { background: #e8f5e9; border-color: var(--ok); }
.tile.bad { background: #ffebee; border-color: var(--bad); }
.tile.locked { pointer-events: none; }

.feedback { text-align: center; font-weight: 700; font-size: 16px; padding: 10px 0 4px; min-height: 1.4em; }
.feedback.good { color: var(--ok); }
.feedback.bad { color: var(--bad); }

/* ---- choice ---- */
.opt { width: 100%; margin-top: 10px; font-size: 20px; padding: 15px 14px; }
.opt.good { background: var(--ok); }
.opt.bad { background: var(--bad); }

/* ---- dictée ---- */
.hint { font-family: ui-monospace, Menlo, Consolas, monospace; color: #00695c; font-size: 18px; padding: 6px 0; }
.hint[hidden] { display: none; }
.guess {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  text-align: center; font-size: 30px; font-weight: 700; padding: 12px;
  letter-spacing: 2px;
}
#keyboard {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-top: 4px;
}
#keyboard button { padding: 10px 0; font-size: 18px; border-radius: 9px; }
#keyboard button.space { grid-column: span 3; font-size: 13px; }

.card {
  margin-top: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}
.card .cap { color: var(--muted); font-size: 14px; }
.card .word {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 26px; padding: 2px 0 8px; color: var(--ink);
}
.card .summary { font-weight: 700; font-size: 17px; padding: 4px 0 10px; }
.answer-row[hidden] { display: none; }

.word .ok { color: var(--ok); }
.word .bad { color: var(--bad); }
.word .dim { color: #9e9e9e; }
.word .under { text-decoration: underline; }
.word .strike { text-decoration: line-through; }

/* ---- words / scan ---- */
textarea {
  width: 100%; font: inherit; padding: 10px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  min-height: 96px; resize: vertical;
}
.wordlist { margin-top: 6px; }
.wordlist .row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0; border-bottom: 1px solid #eee;
}
.wordlist .row span { flex: 1; font-size: 18px; }
.wordlist .row button { background: #eef2f7; color: var(--blue-dark); padding: 8px 12px; }

input[type="file"] { display: none; }