/* ============================================================
   Tetris — Game Page Styles
   ============================================================ */

/* ── Page layout ── */
.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Top nav bar ── */
.topbar {
  width: 100%;
  max-width: 900px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 8px;
}

.game-title-bar {
  font-size: 13px;
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan);
  letter-spacing: 0.15em;
}

.music-btn {
  font-family: var(--font);
  font-size: 8px;
  background: transparent;
  border: 1px solid rgba(0,255,255,0.35);
  color: rgba(0,255,255,0.6);
  padding: 5px 10px;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: all 0.15s;
}
.music-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.music-btn.muted { border-color: rgba(255,255,255,0.2); color: rgba(255,255,255,0.3); }

/* ── Main game area ── */
.game-area {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: flex-start;
  gap: 16px;
  padding: 8px 20px 16px;
  width: 100%;
  flex: 1;
}

/* ── Left / Right side panels ── */
.side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 100px;
}
#left-panel  { justify-self: end; }
#right-panel { justify-self: start; }

.panel-box {
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(0,255,255,0.2);
  padding: 10px 12px;
}
.panel-label {
  font-size: 6px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.3em;
  margin-bottom: 6px;
}
.panel-value {
  font-size: 16px;
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan);
  letter-spacing: 0.05em;
}
.panel-value.best {
  font-size: 13px;
  color: var(--yellow);
  text-shadow: 0 0 8px var(--yellow);
}
.panel-value.lvl {
  font-size: 20px;
}
.panel-value.lines {
  font-size: 14px;
  color: var(--magenta);
  text-shadow: 0 0 8px var(--magenta);
}

/* ── Next piece canvas ── */
#next-canvas {
  display: block;
  background: rgba(0,0,0,0.4);
}

/* ── Game canvas wrapper ── */
.canvas-wrapper {
  position: relative;
  flex-shrink: 0;
}

#game-canvas {
  display: block;
  background: #000;
  image-rendering: pixelated;
}

/* Canvas border glow */
.canvas-glow {
  position: absolute;
  inset: -3px;
  border: 2px solid var(--cyan);
  box-shadow: 0 0 12px var(--cyan), 0 0 30px rgba(0,255,255,0.25), inset 0 0 12px rgba(0,255,255,0.06);
  pointer-events: none;
}

/* ── Overlay screens (start / pause / game-over) ── */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.82);
  gap: 16px;
  z-index: 10;
}
.overlay.hidden { display: none; }

.overlay-title {
  font-size: clamp(9px, 1.8vw, 13px);
  letter-spacing: 0.15em;
  text-align: center;
}

.overlay-sub {
  font-size: 6px;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.2em;
  text-align: center;
  line-height: 2.2;
}

/* ── Mobile/desktop hint visibility ── */
.mobile-hints  { display: none; }
.desktop-hints { display: block; }

@media (pointer: coarse) {
  .mobile-hints  { display: block; }
  .desktop-hints { display: none; }
}

.overlay-score {
  font-size: 11px;
  color: var(--yellow);
  text-shadow: 0 0 10px var(--yellow);
  letter-spacing: 0.1em;
}

.overlay-btn {
  font-family: var(--font);
  font-size: 9px;
  letter-spacing: 0.2em;
  padding: 10px 22px;
  background: transparent;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  cursor: pointer;
  transition: all 0.15s;
  margin-top: 6px;
}
.overlay-btn:hover {
  background: rgba(0,255,255,0.12);
  box-shadow: 0 0 22px var(--cyan);
}
.overlay-btn:active { transform: scale(0.95); }

/* ── Controls hint ── */
.controls-hint {
  font-size: 9px;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.15em;
  text-align: center;
  padding: 8px 20px 20px;
  line-height: 2.4;
}

/* ── Mobile on-screen controls ── */
.touch-controls {
  display: none; /* shown via JS when touch detected */
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 20px 20px;
  user-select: none;
  -webkit-user-select: none;
}

.dpad-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

.dpad-btn {
  width: 52px;
  height: 52px;
  background: rgba(0,0,0,0.6);
  border: 1px solid rgba(0,255,255,0.35);
  color: var(--cyan);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.1s, box-shadow 0.1s;
  border-radius: 4px;
}
.dpad-btn:active,
.dpad-btn.pressed {
  background: rgba(0,255,255,0.15);
  box-shadow: 0 0 12px var(--cyan);
}

.dpad-btn.hard-drop {
  width: 116px;
  font-size: 10px;
  letter-spacing: 0.15em;
  height: 40px;
  font-family: var(--font);
  border-color: rgba(255,255,0,0.4);
  color: var(--yellow);
}
.dpad-btn.hard-drop:active { background: rgba(255,255,0,0.12); box-shadow: 0 0 12px var(--yellow); }

.dpad-btn.pause-small {
  width: 52px;
  height: 40px;
  font-size: 8px;
  font-family: var(--font);
  letter-spacing: 0.1em;
  border-color: rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.4);
}

/* ── Responsive ── */
@media (max-width: 700px) {
  .game-area { gap: 8px; padding: 4px 10px 8px; grid-template-columns: 1fr auto 1fr; }
  .side-panel { min-width: 76px; }
  .panel-value { font-size: 13px; }
  .panel-box { padding: 8px 8px; }
  .panel-label { font-size: 5px; }
  .touch-controls { display: flex; }
  .controls-hint { display: none; }
}

@media (max-width: 440px) {
  .topbar { padding: 10px 12px 4px; }
  .game-title-bar { font-size: 10px; }
  .side-panel { min-width: 64px; gap: 8px; }
  .panel-value { font-size: 11px; }
  .panel-value.lvl { font-size: 16px; }
  .game-area { gap: 6px; padding: 2px 6px 6px; }
}

@media (orientation: portrait) and (max-width: 640px) {
  html, body { overflow: hidden; height: 100%; }
  .touch-controls { display: none; }
  .controls-hint  { display: none; }

  /* Stack vertically: stats → canvas → next */
  .game-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 4px 0 12px;
  }

  /* Scores strip — top */
  #left-panel {
    order: 1;
    flex-direction: row;
    width: 95vw;
    min-width: unset;
    justify-content: space-between;
    gap: 6px;
  }
  #left-panel .panel-box {
    flex: 1;
    text-align: center;
    padding: 6px 4px;
  }
  #left-panel .panel-label { font-size: 5px; margin-bottom: 3px; }
  #left-panel .panel-value { font-size: 11px; }
  #left-panel .panel-value.best { font-size: 9px; }
  #left-panel .panel-value.lvl  { font-size: 13px; }
  #left-panel .panel-value.lines { font-size: 10px; }

  /* Canvas — middle */
  .canvas-wrapper { order: 2; }

  /* Hide next piece panel entirely */
  #right-panel { display: none; }
}

/* ── Rotate-device overlay (landscape → ask for portrait) ── */
.rotate-prompt {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #000;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.rotate-icon {
  font-size: 64px;
  color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan);
  animation: rotate-hint 1.8s ease-in-out infinite;
}
.rotate-text {
  font-family: var(--font);
  font-size: 13px;
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan);
  letter-spacing: 0.15em;
}
.rotate-sub {
  font-family: var(--font);
  font-size: 7px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.15em;
  text-align: center;
}
@keyframes rotate-hint {
  0%   { transform: rotate(0deg); }
  40%  { transform: rotate(-90deg); }
  60%  { transform: rotate(-90deg); }
  100% { transform: rotate(0deg); }
}

@media (orientation: landscape) and (max-height: 640px) {
  .rotate-prompt { display: flex; }
  .page          { display: none; }
}