* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}

.app {
  max-width: 520px;
  margin: 12px auto;
  padding: 12px;
  background: #F7F1E6;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

/* TITLE */
.yawp-title {
  text-align: center;
  font-family: 'Montserrat Alternates', sans-serif;
  font-size: 2.4rem;
  letter-spacing: 1px;
  margin: 0 0 6px;
  color: #333;
}

/* Griglia */
.grid {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 3px;
  margin-top: 8px;
}

/* Celle come pulsanti, font numerico come YaWp */
.grid button {
  width: 100%;
  aspect-ratio: 1 / 1;
  text-align: center;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: clamp(0.9rem, 3.6vw, 1.25rem);
  border-radius: 8px;
  border: 1px solid #ccc;
  padding: 0;
  background: #fff;
}

/* bordi tipo sudoku */
.grid button[data-row-border="true"] {
  border-top: 2px solid #000;
}

.grid button[data-col-border="true"] {
  border-left: 2px solid #000;
}

.grid button:focus {
  outline: 2px solid #007bff;
}

/* celle dove è possibile mettere il prossimo numero */
.grid button.allowed {
  background: #eef3ff;
}

/* suggerimento specifico */
.grid button.hint {
  background: #ffeecf;
}

/* cella con il numero più alto */
.grid button.highest {
  background: #fff8a6 !important;
}

/* Layout controlli B: [✔️ 💡] [frecce] [↩️ 🗑️] */
.controls-layout {
  margin-top: 12px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
}

/* Gruppi laterali di icone */
.side-group {
  display: flex;
  flex-direction: row;
  gap: 6px;
  flex: 0 0 auto;
}

/* Bottoni laterali piccoli */
.side-group button {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #007bff;
  color: white;
  font-size: 1.2rem;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Quick keys compatte */
.quick-keys {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.quick-row {
  display: flex;
  gap: 4px;
}

.qkey {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: none;
  background: #e9edf7;
  font-size: 0.85rem;
  cursor: pointer;
}

.qkey:active {
  background: #c7d3f5;
}

.quick-center {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  color: #777;
}

/* Niente media query che rompe il layout: resta sempre row */

/* Legend & testo */
.legend {
  margin-top: 8px;
  font-size: 0.75rem;
  color: #555;
}

.status {
  margin-top: 6px;
  font-size: 0.8rem;
  color: #333;
}

.rules {
  margin-top: 10px;
  color: #666;
  font-size: 0.75rem;
}

/* Tocco iOS */
button,
.grid button {
  -webkit-tap-highlight-color: transparent;
}



.yawp-title img {
  display: block;
  margin: 0 auto;
  animation: logo-bounce 0.9s ease-out 1;
  transform-origin: center center;
}

.yawp-title img:hover {
  transform: scale(1.03);
}

@keyframes logo-bounce {
  0%   { transform: translateY(-12px) scale(0.96); opacity: 0; }
  40%  { transform: translateY(4px)  scale(1.02); opacity: 1; }
  70%  { transform: translateY(-2px) scale(1.0); }
  100% { transform: translateY(0)    scale(1.0); }
}


/* Timer & best time */
.timer-box {
  text-align: center;
  font-family: 'Fredoka', sans-serif;
  font-size: 1.1rem;
  color: #444;
  margin-top: 6px;
  margin-bottom: 2px;
}

.best-time {
  font-size: 0.9rem;
}

.level-box {
  margin-top: 4px;
  text-align: center;
  font-size: 0.8rem;
}

.level-box label {
  margin-right: 4px;
}

.level-box select {
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 0.8rem;
}

/* celle fisse */
.grid button.fixed {
  background: #e0e0e0;
  color: #222;
  font-weight: 700;
}

/* animazioni fluide */
.grid button {
  transition: background-color 0.18s ease-out,
              transform 0.08s ease-out,
              box-shadow 0.12s ease-out;
}

.grid button.just-placed {
  transform: scale(1.06);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.06);
}


.grid button.fixed.allowed {
  box-shadow: 0 0 0 3px rgba(0,0,0,0.12);
}


/* victory overlay */
.victory-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,0,0,0.75), rgba(0,0,0,0.92));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
}
.victory-overlay.hidden { display: none; }

.victory-card {
  position: relative;
  background: linear-gradient(180deg, rgba(18,18,18,0.98), rgba(0,0,0,0.98));
  color: #fff;
  padding: 26px 20px;
  border-radius: 20px;
  text-align: center;
  max-width: 92%;
  width: 360px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.45);
  animation: victoryPop 0.6s cubic-bezier(.2,1.25,.35,1);
  z-index: 100001;
}
@keyframes victoryPop {
  0% { transform: scale(0.72); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
.victory-title { font-size: 1.65rem; margin-bottom: 10px; }
.victory-text { font-size: 1rem; opacity: 0.92; }
.victory-time { margin: 14px 0 18px 0; font-size: 1.05rem; opacity: 0.98; }
.victory-btn {
  border: none;
  border-radius: 999px;
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  background: linear-gradient(90deg, #00e0ff, #00ffa6);
  color: #000;
}

/* confetti */
.confetti-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 100000;
}
.confetti {
  position: absolute;
  top: -12px;
  width: 10px;
  height: 14px;
  opacity: 0.95;
  animation: confettiFall 1.3s linear forwards;
}
@keyframes confettiFall {
  0%   { transform: translateY(-20px) rotate(0deg); }
  100% { transform: translateY(110vh) rotate(720deg); }
}


/* highlight ultimo numero inserito */
.grid button.last-number {
  background: linear-gradient(180deg, #1aff7a, #0fbf5a);
  color: #000;
  box-shadow: 0 0 0 2px rgba(26,255,122,0.9),
              0 0 14px rgba(26,255,122,0.6);
}