/*
 * Pexeso – izolovaný stylesheet jen pro hru Pexeso.
 * Všechny selektory jsou prefixované .pexeso-* aby se nedotkly jiných her.
 */

/* =========================================
   CARD – 3D flip struktura
   ========================================= */
.pexeso-card {
  perspective: 900px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  outline: none;
}
.pexeso-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.55s cubic-bezier(0.34, 1.35, 0.64, 1), box-shadow 0.3s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.pexeso-card.flipped .pexeso-card-inner,
.pexeso-card.matched .pexeso-card-inner {
  transform: rotateY(180deg);
}

.pexeso-card-front,
.pexeso-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* =========================================
   FRONT – prémiový design (zakrytá strana)
   ========================================= */
.pexeso-card-front {
  z-index: 2;
  background: linear-gradient(135deg, var(--pexeso-c1, #3b82f6), var(--pexeso-c2, #4f46e5));
  box-shadow:
    inset 0 2px 0 rgba(255, 255, 255, 0.3),
    inset 0 -3px 8px rgba(0, 0, 0, 0.18),
    0 4px 12px rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(0, 0, 0, 0.06);
  border: 2px solid rgba(255, 255, 255, 0.25);
}
.pexeso-card-front::before {
  /* noise texture overlay */
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  pointer-events: none;
}
.pexeso-card-front::after {
  /* shine sweep na hover/focus */
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 35%, rgba(255, 255, 255, 0.35) 50%, transparent 65%);
  transform: translateX(-120%);
  pointer-events: none;
  transition: transform 0.7s ease;
}
.pexeso-card:hover .pexeso-card-front::after,
.pexeso-card:focus-visible .pexeso-card-front::after {
  transform: translateX(120%);
}

.pexeso-card-mark {
  color: #ffffff;
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 900;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  letter-spacing: 0.05em;
  z-index: 3;
  position: relative;
}

/* Hover – lift + brighten */
.pexeso-card:not(.flipped):not(.matched):hover .pexeso-card-inner {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
  filter: brightness(1.06);
}
.pexeso-card:not(.flipped):not(.matched):active .pexeso-card-inner {
  transform: translateY(-1px) scale(0.97);
  transition-duration: 0.1s;
}

/* Keyboard focus – glow ring */
.pexeso-card:focus-visible {
  outline: 3px solid #3b82f6;
  outline-offset: 3px;
  border-radius: 0.9rem;
}

/* =========================================
   BACK – odkrytá strana (obsah)
   ========================================= */
.pexeso-card-back {
  transform: rotateY(180deg);
  background: #ffffff;
  border: 2px solid rgba(15, 23, 42, 0.1);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}
.pexeso-card-back.is-emoji {
  background: radial-gradient(circle at 50% 40%, rgba(var(--pexeso-rgb, 59, 130, 246), 0.08), #ffffff 70%);
}
.pexeso-card-back.is-word {
  background: linear-gradient(160deg, rgba(var(--pexeso-rgb, 59, 130, 246), 0.06), #ffffff 60%);
  container-type: inline-size;
}
.pexeso-card-back.is-word > span {
  display: inline-block;
  max-width: 100%;
  padding-inline: 0.25rem;
  font-size: clamp(0.7rem, 15cqi, 1.25rem);
  line-height: 1.1;
  word-break: break-word;
  hyphens: auto;
  text-wrap: balance;
}
.pexeso-card-back.is-audio {
  background: linear-gradient(160deg, rgba(168, 85, 247, 0.1), #ffffff 60%);
}

/* Match state */
.pexeso-card.matched .pexeso-card-back {
  border-color: #10b981;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25), 0 0 16px rgba(16, 185, 129, 0.18);
}
.pexeso-card.matched-combo .pexeso-card-back {
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.4), 0 0 20px rgba(245, 158, 11, 0.35);
  border-color: #f59e0b;
}
.pexeso-card.matched-rainbow .pexeso-card-back {
  animation: pexeso-rainbow-glow 1.6s ease-in-out 1;
}

/* Badge ✓ / ✗ pro a11y colorblind */
.pexeso-match-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #10b981;
  color: #fff;
  font-size: 14px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
  animation: pexeso-badge-pop 0.4s ease;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
}
.pexeso-match-badge.is-wrong {
  background: #ef4444;
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.4);
}

/* Entrance animace obsahu po flipu */
.pexeso-card.flipped .pexeso-card-back > *,
.pexeso-card.matched .pexeso-card-back > * {
  animation: pexeso-content-appear 0.35s ease 0.25s both;
}

/* =========================================
   KEYFRAMES – card flip, match, wrong, combo
   ========================================= */
@keyframes pexeso-content-appear {
  from { opacity: 0; transform: scale(0.75); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes pexeso-match-pulse {
  0%   { transform: rotateY(180deg) scale(1); }
  40%  { transform: rotateY(180deg) scale(var(--pexeso-match-scale, 1.1)); }
  100% { transform: rotateY(180deg) scale(1); }
}
@keyframes pexeso-shake-wrong {
  0%, 100% { transform: rotateY(180deg) translateX(0); }
  20% { transform: rotateY(180deg) translateX(-5px); }
  40% { transform: rotateY(180deg) translateX(5px); }
  60% { transform: rotateY(180deg) translateX(-3px); }
  80% { transform: rotateY(180deg) translateX(3px); }
}
@keyframes pexeso-combo-pop {
  0%   { transform: scale(0.6); opacity: 0; }
  50%  { transform: scale(1.22); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes pexeso-star-fill {
  0%   { transform: scale(0) rotate(-30deg); opacity: 0; }
  60%  { transform: scale(1.3) rotate(10deg); opacity: 1; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}
@keyframes pexeso-confetti-piece {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(420px) rotate(720deg); opacity: 0; }
}
@keyframes pexeso-record-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.07); }
}
@keyframes pexeso-toast-fade {
  0%   { opacity: 0; transform: translateY(8px); }
  15%  { opacity: 1; transform: translateY(0); }
  85%  { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-4px); }
}
@keyframes pexeso-particle-burst {
  0%   { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 1; }
  25%  { opacity: 1; }
  100% { transform: translate(var(--px), calc(var(--py) + 80px)) scale(0.2) rotate(var(--pr)); opacity: 0; }
}
@keyframes pexeso-particle-glow {
  0%   { transform: translate(0, 0) scale(0.5); opacity: 0; }
  15%  { transform: translate(calc(var(--px) * 0.1), calc(var(--py) * 0.1)) scale(1.3); opacity: 1; }
  100% { transform: translate(var(--px), calc(var(--py) + 60px)) scale(0); opacity: 0; }
}
@keyframes pexeso-particle-ring {
  0%   { transform: scale(0); opacity: 0.6; }
  50%  { opacity: 0.3; }
  100% { transform: scale(2.8); opacity: 0; }
}
@keyframes pexeso-badge-pop {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.35); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes pexeso-fade-in-up {
  from { opacity: 0; transform: translateY(10px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes pexeso-screen-flash {
  0%   { opacity: 0; }
  20%  { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes pexeso-screen-shake {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-4px, 2px); }
  40% { transform: translate(4px, -2px); }
  60% { transform: translate(-3px, -1px); }
  80% { transform: translate(3px, 1px); }
}
@keyframes pexeso-rainbow-glow {
  0%   { box-shadow: 0 0 0 2px #ef4444, 0 0 18px #ef4444; border-color: #ef4444; }
  16%  { box-shadow: 0 0 0 2px #f59e0b, 0 0 18px #f59e0b; border-color: #f59e0b; }
  33%  { box-shadow: 0 0 0 2px #eab308, 0 0 18px #eab308; border-color: #eab308; }
  50%  { box-shadow: 0 0 0 2px #22c55e, 0 0 18px #22c55e; border-color: #22c55e; }
  66%  { box-shadow: 0 0 0 2px #3b82f6, 0 0 18px #3b82f6; border-color: #3b82f6; }
  83%  { box-shadow: 0 0 0 2px #a855f7, 0 0 18px #a855f7; border-color: #a855f7; }
  100% { box-shadow: 0 0 0 2px #ec4899, 0 0 18px #ec4899; border-color: #ec4899; }
}
@keyframes pexeso-focus-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.5); }
  50%      { box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
}
@keyframes pexeso-score-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.18); color: #d97706; }
  100% { transform: scale(1); }
}
@keyframes pexeso-lift {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-4px); }
}

/* Utility animace třídy */
.pexeso-animate-match-pulse .pexeso-card-inner { animation: pexeso-match-pulse 0.55s ease; }
.pexeso-animate-shake-wrong .pexeso-card-inner { animation: pexeso-shake-wrong 0.45s ease; }
.pexeso-animate-combo-pop { animation: pexeso-combo-pop 0.45s ease forwards; }
.pexeso-animate-star-fill { animation: pexeso-star-fill 0.55s ease forwards; }
.pexeso-animate-record-pulse { animation: pexeso-record-pulse 1.2s ease infinite; }
.pexeso-animate-toast-fade { animation: pexeso-toast-fade 2.4s ease forwards; }
.pexeso-animate-fade-in { animation: pexeso-fade-in-up 0.35s ease both; }
.pexeso-animate-score-pop { animation: pexeso-score-pop 0.5s ease; }

/* =========================================
   PARTICLES & VFX
   ========================================= */
.pexeso-match-particle {
  position: absolute;
  pointer-events: none;
  z-index: 40;
  border-radius: 50%;
  animation: pexeso-particle-burst var(--duration, 0.7s) cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.pexeso-match-particle-star {
  position: absolute;
  pointer-events: none;
  z-index: 40;
  animation: pexeso-particle-glow var(--duration, 0.8s) ease-out forwards;
}
.pexeso-match-particle-ring {
  position: absolute;
  pointer-events: none;
  z-index: 39;
  border: 2px solid;
  border-radius: 50%;
  animation: pexeso-particle-ring 0.7s ease-out forwards;
}

/* Screen flash overlay pro combo ≥ 3 */
.pexeso-screen-flash {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 60;
  background: #fbbf24;
  opacity: 0;
  animation: pexeso-screen-flash 0.4s ease forwards;
}

/* Screen shake wrapper pro combo 7+ */
.pexeso-screen-shake {
  animation: pexeso-screen-shake 0.4s ease;
}

/* =========================================
   COMBO WIDGET – progress ring
   ========================================= */
.pexeso-combo-widget {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(15, 23, 42, 0.08);
  transition: all 0.3s ease;
  font-variant-numeric: tabular-nums;
}
.pexeso-combo-widget.tier-0 { color: #64748b; }
.pexeso-combo-widget.tier-1 { color: #3b82f6; border-color: #3b82f6; }
.pexeso-combo-widget.tier-2 { color: #10b981; border-color: #10b981; background: rgba(16, 185, 129, 0.08); }
.pexeso-combo-widget.tier-3 { color: #f59e0b; border-color: #f59e0b; background: rgba(245, 158, 11, 0.1); font-weight: 700; }
.pexeso-combo-widget.tier-4 { color: #ffffff; border-color: #f97316; background: linear-gradient(135deg, #f59e0b, #ef4444); font-weight: 800; box-shadow: 0 0 12px rgba(249, 115, 22, 0.5); }
.pexeso-combo-widget.tier-5 {
  color: #ffffff; border-color: #a855f7; font-weight: 900;
  background: linear-gradient(135deg, #ef4444, #f59e0b, #eab308, #22c55e, #3b82f6, #a855f7, #ec4899);
  background-size: 400% 400%;
  animation: pexeso-combo-rainbow 3s ease infinite;
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.6);
}
@keyframes pexeso-combo-rainbow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* =========================================
   TIMER PROGRESS
   ========================================= */
.pexeso-timer-bar {
  position: relative;
  overflow: hidden;
}
.pexeso-timer-bar::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: var(--pexeso-timer-pct, 0%);
  background: linear-gradient(90deg, #10b981, #22c55e);
  transition: width 0.5s ease, background 0.4s ease;
}
.pexeso-timer-bar.warn::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.pexeso-timer-bar.danger::before { background: linear-gradient(90deg, #ef4444, #f97316); }

/* =========================================
   GAME OVER – result screen
   ========================================= */
.pexeso-score-big {
  font-size: clamp(3rem, 12vw, 5rem);
  font-weight: 900;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.pexeso-record-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
  font-weight: 800;
  font-size: 0.875rem;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
  animation: pexeso-record-pulse 1.2s ease infinite;
}

/* =========================================
   MODE BUTTONS (classic / audio)
   ========================================= */
.pexeso-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
  border: 2px solid #cbd5e1;
  background: #f1f5f9;
  color: #334155;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
  user-select: none;
}
.pexeso-mode-btn:hover {
  border-color: #93c5fd;
  background: #eff6ff;
  color: #1e40af;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(59, 130, 246, 0.12);
}
.pexeso-mode-btn:focus-visible {
  outline: 3px solid #3b82f6;
  outline-offset: 2px;
}
.pexeso-mode-btn-icon {
  font-size: 1.1rem;
  line-height: 1;
}
.pexeso-mode-btn.is-active {
  border-color: #3b82f6;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.35), 0 0 0 3px rgba(59, 130, 246, 0.15);
  transform: translateY(-1px);
}
.pexeso-mode-btn.is-active:hover {
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  color: #ffffff;
}

/* =========================================
   STREAK BADGE
   ========================================= */
.pexeso-streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #f97316, #ef4444);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.15);
  animation: pexeso-streak-pop 0.4s ease both;
}
.pexeso-streak-badge .flame {
  font-size: 1.15rem;
  line-height: 1;
  filter: drop-shadow(0 0 6px rgba(255, 200, 50, 0.6));
}
@keyframes pexeso-streak-pop {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* =========================================
   ONBOARDING – tutorial tooltip
   ========================================= */
.pexeso-tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(2px);
  pointer-events: auto;
}
.pexeso-tutorial-spotlight {
  position: absolute;
  border-radius: 0.9rem;
  box-shadow: 0 0 0 9999px rgba(15, 23, 42, 0.55);
  transition: all 0.35s ease;
  pointer-events: none;
}
.pexeso-tutorial-bubble {
  position: absolute;
  max-width: 280px;
  padding: 0.9rem 1rem;
  background: #ffffff;
  border-radius: 0.8rem;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  font-size: 0.875rem;
  color: #1e293b;
  pointer-events: auto;
  animation: pexeso-fade-in-up 0.3s ease both;
}
.pexeso-tutorial-bubble::before {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  background: #ffffff;
  transform: rotate(45deg);
}
.pexeso-tutorial-bubble.pos-top::before    { top: -6px; left: 50%; margin-left: -7px; }
.pexeso-tutorial-bubble.pos-bottom::before { bottom: -6px; left: 50%; margin-left: -7px; }
.pexeso-tutorial-bubble.pos-left::before   { left: -6px; top: 50%; margin-top: -7px; }
.pexeso-tutorial-bubble.pos-right::before  { right: -6px; top: 50%; margin-top: -7px; }

.pexeso-tutorial-skip {
  background: none;
  border: none;
  color: #64748b;
  font-size: 0.75rem;
  text-decoration: underline;
  cursor: pointer;
  margin-top: 0.5rem;
}

/* =========================================
   DIALOG (confirm leave, modal)
   ========================================= */
.pexeso-dialog {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pexeso-dialog.hidden {
  display: none !important;
}
.pexeso-tutorial-overlay.hidden {
  display: none !important;
}
.pexeso-dialog-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  animation: pexeso-fade-in-up 0.25s ease;
  pointer-events: none; /* Aby neblokoval klik na dialog content */
}
.pexeso-dialog-content {
  position: relative;
  z-index: 1;
  background: #ffffff;
  border-radius: 1rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  padding: 1.5rem;
  max-width: 24rem;
  margin: 0 1rem;
  animation: pexeso-fade-in-up 0.3s ease;
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 360px) {
  #game-board {
    max-width: 340px !important;
  }
}

/* Touch hit target – speaker/control buttony ≥ 44px */
@media (pointer: coarse) {
  .pexeso-speak-btn {
    min-width: 44px;
    min-height: 44px;
  }
}

/* =========================================
   REDUCED MOTION
   ========================================= */
@media (prefers-reduced-motion: reduce) {
  .pexeso-card-inner { transition: none !important; }
  .pexeso-card-front::after { transition: none !important; }
  .pexeso-animate-match-pulse .pexeso-card-inner,
  .pexeso-animate-shake-wrong .pexeso-card-inner,
  .pexeso-animate-combo-pop,
  .pexeso-animate-star-fill,
  .pexeso-animate-record-pulse,
  .pexeso-animate-toast-fade,
  .pexeso-animate-fade-in,
  .pexeso-animate-score-pop,
  .pexeso-tutorial-bubble,
  .pexeso-dialog-content,
  .pexeso-dialog-backdrop,
  .pexeso-record-badge,
  .pexeso-combo-widget.tier-5 { animation: none !important; }
  .pexeso-card:not(.flipped):not(.matched):hover .pexeso-card-inner { transform: none; }
  .pexeso-match-particle,
  .pexeso-match-particle-star,
  .pexeso-match-particle-ring { display: none !important; }
  .pexeso-screen-flash,
  .pexeso-screen-shake { animation: none !important; }
  #word-preview-container { transition: none !important; }
}