:root {
  --color-bg: #121213;
  --color-header-border: #3a3a3c;
  --color-text-primary: #ffffff;
  --color-text-secondary: #818384;
  
  --color-correct: #538d4e;
  --color-present: #b59f3b;
  --color-absent: #3a3a3c;
  --color-empty-border: #3a3a3c;
  --color-active-border: #565758;

  --key-bg: #818384;
  --key-bg-hover: #9a9c9e;
  --key-text: #ffffff;

  --header-height: 50px;
  --game-max-width: 100%;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  height: 100dvh;
  min-height: -webkit-fill-available;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: 'Clear Sans', 'Helvetica Neue', Arial, sans-serif;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

#game {
  width: 100%;
  max-width: 100%;
  height: 100vh;
  height: 100dvh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  padding: 0 4px;
  padding-bottom: env(safe-area-inset-bottom, 2px);
  box-sizing: border-box;
  overflow: hidden;
}

.header {
  height: var(--header-height);
  border-bottom: 1px solid var(--color-header-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex: 0 0 auto;
  background-color: var(--color-bg);
  z-index: 10;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 70px;
}

.header-right {
  justify-content: flex-end;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.title {
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: 0.15rem;
  text-align: center;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge {
  font-size: 0.65rem;
  background: var(--color-correct);
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0;
  vertical-align: middle;
}

.toaster {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background-color: #ffffff;
  color: #000000;
  padding: 12px 18px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 23px 0 rgba(0, 0, 0, 0.4);
  animation: fadeIn 0.15s ease-out, fadeOut 0.2s ease-in 1.6s forwards;
}

.item-info {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 4px 0;
  flex: 0 0 auto;
  background-color: var(--color-bg);
  z-index: 9;
}

.level-pills {
  display: flex;
  align-items: center;
  gap: 3px;
  background: rgba(255, 255, 255, 0.05);
  padding: 3px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-right: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 95vw;
}

.level-pills::-webkit-scrollbar {
  display: none;
}

.level-pill {
  font-family: inherit;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  padding: 4px 10px;
  border-radius: 12px;
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  white-space: nowrap;
}

.level-pill:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

.level-pill.active {
  color: #ffffff;
}

.level-pill.active[data-level="daily"] {
  background-color: #f59e0b;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.4);
}

.level-pill.active[data-level="mix"] {
  background-color: #10b981;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}

.level-pill.active[data-level="easy"] {
  background-color: #0284c7;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.4);
}

.level-pill.active[data-level="medium"] {
  background-color: #8b5cf6;
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4);
}

.level-pill.active[data-level="hard"] {
  background-color: #e11d48;
  box-shadow: 0 2px 8px rgba(225, 29, 72, 0.4);
}

.level-pill.active[data-level="extreme"] {
  background-color: #d946ef;
  box-shadow: 0 2px 8px rgba(217, 70, 239, 0.4);
}

.info-pill {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 3px 12px;
  border-radius: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.branding-pill {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 3px 10px;
  border-radius: 12px;
  letter-spacing: 0.03em;
  margin-left: 6px;
}

.branding-pill strong, .game-footer strong {
  color: #38bdf8;
  font-weight: 700;
}

.game-footer {
  text-align: center;
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  padding: 2px 0 6px;
  flex: 0 0 auto;
  letter-spacing: 0.03em;
  background-color: var(--color-bg);
}

.board-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1 1 0;
  min-height: 0;
  padding: 4px 10px;
  width: 100%;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.board {
  display: flex;
  flex-direction: column;
  gap: clamp(2px, 0.5vh, 6px);
  width: fit-content;
  max-width: 98vw;
  max-height: 100%;
  margin: auto;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
}

.board .row {
  display: grid;
  width: fit-content;
  max-width: 98vw;
  justify-content: center;
  align-items: center;
  gap: clamp(2px, 0.4vw, 6px);
  margin: 0 auto;
}

.tile {
  --tile-size: min(calc(90vw / var(--cols, 5)), calc(38dvh / var(--rows, 6)), 44px);
  width: var(--tile-size);
  height: var(--tile-size);
  aspect-ratio: 1 / 1;
  border: 2px solid var(--color-empty-border);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: clamp(0.65rem, calc(var(--tile-size) * 0.55), 1.6rem);
  line-height: 1;
  font-weight: bold;
  box-sizing: border-box;
  color: var(--color-text-primary);
  text-transform: uppercase;
  user-select: none;
  border-radius: 4px;
  margin: 0 auto;
  transition: transform 0.1s ease, border-color 0.1s ease;
}

.tile.space-tile {
  border: none;
  background: transparent;
  pointer-events: none;
  opacity: 0;
  width: clamp(4px, 1vw, 12px);
}

.tile.fixed-tile {
  border: none;
  background: transparent;
  color: #ffffff;
  font-weight: 800;
  pointer-events: none;
  width: auto;
  min-width: 6px;
  padding: 0 2px;
  font-size: clamp(0.9rem, calc(var(--tile-size) * 0.7), 1.8rem);
}

.tile[data-state="toggling"] {
  border-color: var(--color-active-border);
  animation: pop 0.1s ease-in-out;
}

.tile[data-state="correct"] {
  background-color: var(--color-correct);
  border-color: var(--color-correct);
  color: #ffffff;
}

.tile[data-state="correct-word"] {
  background-color: #0284c7;
  border-color: #0284c7;
  color: #ffffff;
}

.tile[data-state="present"] {
  background-color: var(--color-present);
  border-color: var(--color-present);
  color: #ffffff;
}

.tile[data-state="absent"] {
  background-color: var(--color-absent);
  border-color: var(--color-absent);
  color: #ffffff;
}

.keyboard {
  height: auto;
  width: 100%;
  max-width: min(96vw, 520px);
  margin: 0 auto 6px;
  display: flex;
  flex-direction: column;
  padding: 0 4px;
  flex-shrink: 0;
  background-color: var(--color-bg);
  z-index: 10;
}

.keyboard .row {
  display: flex;
  width: 100%;
  margin: 0 auto 3px;
  touch-action: manipulation;
}

.key {
  font-family: inherit;
  font-weight: bold;
  font-size: clamp(0.7rem, 2.2vw, 0.92rem);
  border: 0;
  padding: 0;
  margin: 0 3px 0 0;
  height: clamp(32px, 5.2vh, 42px);
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  background-color: var(--key-bg);
  color: var(--key-text);
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  text-transform: uppercase;
  -webkit-tap-highlight-color: rgba(0,0,0,0.3);
  transition: background-color 0.2s ease, transform 0.05s ease;
}

.key:active {
  transform: scale(0.96);
}

.key:last-child {
  margin-right: 0;
}

.key.one-and-a-half {
  flex: 1.4;
  font-size: clamp(0.65rem, 1.8vw, 0.78rem);
}

.spacer.half {
  flex: 0.5;
}

.key[data-state="correct"] {
  background-color: var(--color-correct);
}

.key[data-state="correct-word"] {
  background-color: #0284c7;
  color: #ffffff;
}

.key[data-state="present"] {
  background-color: var(--color-present);
}

.key[data-state="absent"] {
  background-color: var(--color-absent);
  opacity: 0.4;
}

.row.shake {
  animation: shake 0.5s ease-in-out;
}

.tile.flip {
  animation: flipTile 0.5s ease forwards;
}

.tile.bounce {
  animation: bounce 0.5s ease;
}

@keyframes pop {
  0% { transform: scale(0.8); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-4px); }
  40%, 60% { transform: translateX(4px); }
}

@keyframes flipTile {
  0% { transform: rotateX(0deg); }
  50% { transform: rotateX(90deg); }
  100% { transform: rotateX(0deg); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-30px); }
  60% { transform: translateY(-15px); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-10px); }
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal {
  background-color: var(--color-bg);
  border: 1px solid var(--color-header-border);
  border-radius: 8px;
  padding: 24px;
  width: 90%;
  max-width: 440px;
  position: relative;
  box-shadow: 0 4px 23px 0 rgba(0, 0, 0, 0.5);
}

.close-btn {
  position: absolute;
  top: 14px;
  right: 16px;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.8rem;
  cursor: pointer;
}

.modal h2 {
  font-size: 1.2rem;
  letter-spacing: 0.1rem;
  text-align: center;
  margin-bottom: 12px;
}

.modal p.sub {
  text-align: center;
  font-size: 0.9rem;
  color: #d7dede;
  margin-bottom: 16px;
}

.modal ul {
  padding-left: 20px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #d7dede;
}

.examples {
  border-top: 1px solid var(--color-header-border);
  padding-top: 12px;
  margin-top: 8px;
}

.example-title {
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.color-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  background: rgba(255, 255, 255, 0.03);
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.tile-sample {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 4px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
}

.tile-sample.correct {
  background-color: var(--color-correct);
}

.tile-sample.correct-word {
  background-color: #0284c7;
}

.tile-sample.present {
  background-color: var(--color-present);
}

.tile-sample.absent {
  background-color: var(--color-absent);
}

.color-desc {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.color-name {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.color-name.green { color: #4ade80; }
.color-name.blue { color: #38bdf8; }
.color-name.yellow { color: #facc15; }
.color-name.gray { color: #9ca3af; }

.color-desc p {
  font-size: 0.8rem;
  color: #d1d5db;
  line-height: 1.25;
  margin: 0;
}

.statistics {
  display: flex;
  justify-content: space-around;
  margin: 20px 0;
}

.statistic-container {
  text-align: center;
}

.statistic {
  font-size: 2rem;
  font-weight: 400;
}

.statistic-container .label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.guess-distribution {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 16px 0;
}

.dist-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}

.dist-bar {
  background-color: var(--color-absent);
  color: #ffffff;
  padding: 2px 8px;
  font-weight: bold;
  min-width: 20px;
  text-align: right;
  border-radius: 2px;
}

.dist-bar.highlight {
  background-color: var(--color-correct);
}

.stats-actions {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

.play-btn {
  background-color: var(--color-correct);
  color: #ffffff;
  border: none;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.05rem;
}

.play-btn:hover {
  opacity: 0.9;
}

#confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 300;
}

.hidden {
  display: none !important;
}

/* Mobile Responsiveness (Phones & Small Screens) */
@media (max-width: 480px) {
  .header {
    padding: 0 8px;
  }

  .header-left, .header-right {
    width: auto;
    gap: 2px;
  }

  .title {
    font-size: clamp(1.2rem, 5vw, 1.5rem);
    letter-spacing: 0.08rem;
  }

  .icon-btn {
    padding: 3px;
  }

  .item-info {
    flex-direction: column;
    gap: 4px;
    padding: 2px 0;
  }

  .level-pills {
    margin-right: 0;
    max-width: 98vw;
    padding: 2px;
  }

  .level-pill {
    font-size: 0.62rem;
    padding: 3px 8px;
  }

  .info-pill {
    font-size: 0.7rem;
    padding: 2px 8px;
  }

  .keyboard {
    padding: 0 2px;
    margin: 0 auto 2px;
    max-width: 100vw;
    padding-bottom: max(4px, env(safe-area-inset-bottom));
  }

  .keyboard .row {
    margin-bottom: 2px;
  }

  .key {
    height: clamp(28px, 4.5dvh, 36px);
    margin-right: 1.5px;
    font-size: clamp(0.65rem, 3vw, 0.85rem);
    border-radius: 3px;
  }

  .key.one-and-a-half {
    flex: 1.35;
    font-size: clamp(0.54rem, 2.4vw, 0.7rem);
  }

  .modal {
    padding: 16px 14px;
    width: 95%;
    max-height: 88vh;
    overflow-y: auto;
  }

  .modal h2 {
    font-size: 1.05rem;
  }

  .modal p.sub {
    font-size: 0.82rem;
    margin-bottom: 10px;
  }

  .modal ul {
    font-size: 0.8rem;
    padding-left: 16px;
    margin-bottom: 14px;
  }

  .examples .tile {
    width: 30px;
    height: 30px;
    font-size: 1rem;
  }
}