:root {
  --color-correct: #4caf50;
  --color-present: #f9a825;
  --color-missing: rgba(255, 255, 255, 0.08);
  --color-unknown: rgba(255, 255, 255, 0.09);
  --color-background: #0d0d0d;
  --color-surface: #151515;
  --color-missing-key: #B71C1C;
  --color-text: #FFFFFF;
  --color-key-bg: rgba(255, 255, 255, 0.10);
  --color-key-border: rgba(255, 255, 255, 0.06);
}

[data-theme="light"] {
  --color-correct: #4caf50;
  --color-present: #f9a825;
  --color-missing: #787c7e;
  --color-unknown: #d3d6da;
  --color-background: #f9f9f9;
  --color-surface: #f0f0f0;
  --color-missing-key: #787c7e;
  --color-text: #1a1a1b;
  --color-key-bg: #d3d6da;
  --color-key-border: #c0c3c6;
}

/* ===== Keyframe Animations ===== */

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

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

@keyframes dialog-enter {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, 10px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 50%, 90% { transform: translateX(-4px); }
  30%, 70% { transform: translateX(4px); }
}

/* ===== Base ===== */

html,
body {
  font-family: 'Avenir Next', 'Segoe UI', 'Noto Sans', sans-serif;
  width: 100%;
  min-height: 100vh;
  padding: 0;
  margin: 0;
  background-color: var(--color-background);
  color: var(--color-text);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.main {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.game-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  max-width: 500px;
  width: 100%;
}

/* ===== Grid ===== */

.grid {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 8px;
  padding: 10px;
  box-sizing: border-box;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 5/6;
  margin: 0 auto;
}

.row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 5px;
}

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

/* ===== Tiles ===== */

.tile {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight: bold;
  text-transform: uppercase;
  border: 2px solid var(--color-unknown);
  background-color: transparent;
  color: var(--color-text);
  user-select: none;
  border-radius: 6px;
  aspect-ratio: 1;
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

.tile.tile-pop {
  animation: pop 0.1s ease-in-out;
}

.tile.tile-filled {
  border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .tile.tile-filled {
  border-color: #878a8c;
}

.tile.tile-flip {
  animation: flip-in 0.5s ease-in-out;
  animation-fill-mode: both;
}

.tile.correct {
  background-color: var(--color-correct);
  border-color: var(--color-correct);
  color: #ffffff;
}

.tile.present {
  background-color: var(--color-present);
  border-color: var(--color-present);
  color: #ffffff;
}

.tile.missing {
  background-color: var(--color-missing);
  border-color: var(--color-missing);
}

.tile.unknown {
  border-color: var(--color-unknown);
  background-color: transparent;
}

/* ===== Keyboard ===== */

.keyboard {
  width: 100%;
  max-width: 400px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.keyboard-row {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.key {
  font-family: inherit;
  font-weight: bold;
  border: 1px solid var(--color-key-border);
  padding: 0;
  margin: 0;
  height: 52px;
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  background-color: var(--color-key-bg);
  color: var(--color-text);
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  text-transform: uppercase;
  font-size: 1.1rem;
  touch-action: manipulation;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.1s ease;
}

.key:hover {
  filter: brightness(1.15);
}

.key:active {
  transform: scale(0.95);
  opacity: 0.8;
}

.key.large {
  flex: 1.5;
  font-size: 0.8rem;
}

.key.action.enabled {
  background-color: #2196F3;
  color: white;
}

.key.action.disabled {
  background-color: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.30);
  cursor: default;
}

[data-theme="light"] .key.action.disabled {
  background-color: #d3d6da;
  color: rgba(0, 0, 0, 0.30);
}

.key.correct {
  background-color: var(--color-correct);
  color: #ffffff;
}

.key.present {
  background-color: var(--color-present);
  color: #ffffff;
}

.key.missing {
  background-color: var(--color-missing-key);
  color: #ffffff;
}

[data-theme="light"] .key.missing {
  color: #ffffff;
}

/* ===== Score Widgets ===== */

.score-widget {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

.score-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1.2rem;
}

.score-icon {
  width: 18px;
  height: 18px;
}

/* ===== Dialog ===== */

.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.dialog-content {
  background-color: var(--color-surface);
  border: 1px solid var(--color-unknown);
  padding: 24px;
  border-radius: 16px;
  max-width: 90%;
  width: 400px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  position: relative;
  animation: dialog-enter 0.2s ease-out;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.dialog-content h2 {
  padding-right: 36px;
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease;
}

.dialog-close:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .dialog-close:hover {
  background-color: rgba(0, 0, 0, 0.08);
}

/* ===== Header ===== */

.header {
  width: 100%;
  max-width: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px 20px;
  box-sizing: border-box;
  background-color: transparent;
  transition: none;
}

.header > :first-child {
  justify-self: start;
}

.header > :last-child {
  justify-self: end;
}

.header-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--color-text);
  text-transform: uppercase;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-button {
  background-color: var(--color-key-bg);
  border: 1px solid var(--color-key-border);
  color: var(--color-text);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.2s ease, transform 0.15s ease, border-color 0.2s ease;
}

.icon-button i {
  font-size: 0.95rem;
}

.icon-button:hover {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

[data-theme="light"] .icon-button:hover {
  background-color: rgba(0, 0, 0, 0.12);
  border-color: rgba(0, 0, 0, 0.2);
}

.icon-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* ===== Buttons ===== */

.primary-button {
  background-color: var(--color-correct);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 10px;
  font-weight: bold;
  transition: opacity 0.2s ease, transform 0.1s ease;
}

.primary-button:hover {
  opacity: 0.85;
}

.primary-button:active {
  transform: scale(0.97);
}

.secondary-button {
  background-color: #2196F3;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 10px;
  font-weight: bold;
  transition: opacity 0.2s ease, transform 0.1s ease;
}

.secondary-button:hover {
  opacity: 0.85;
}

.secondary-button:active {
  transform: scale(0.97);
}

.secondary-button.share-button {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dialog-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

/* ===== Toast ===== */

.toast {
  position: fixed;
  bottom: 10%;
  top: auto;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-text);
  color: var(--color-background);
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: bold;
  opacity: 0;
  z-index: 2000;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.toast.show {
  animation: toast-in 0.3s ease-out forwards;
}

/* ===== Difficulty Widget ===== */

.difficulty-widget {
  background-color: rgba(255, 255, 255, 0.12);
  padding: 4px 12px;
  border-radius: 24px;
  font-size: 0.9rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  transition: background-color 0.3s ease, color 0.3s ease;
}

[data-theme="light"] .difficulty-widget {
  background-color: rgba(0, 0, 0, 0.08);
}

.difficulty-widget.difficulty-easy {
  background-color: rgba(76, 175, 80, 0.20);
  color: var(--color-correct);
}

.difficulty-widget.difficulty-medium {
  background-color: rgba(249, 168, 37, 0.20);
  color: var(--color-present);
}

.difficulty-widget.difficulty-hard {
  background-color: rgba(244, 67, 54, 0.20);
  color: #f44336;
}

[data-theme="light"] .difficulty-widget.difficulty-easy {
  background-color: rgba(76, 175, 80, 0.15);
  color: #388e3c;
}

[data-theme="light"] .difficulty-widget.difficulty-medium {
  background-color: rgba(249, 168, 37, 0.15);
  color: #e65100;
}

[data-theme="light"] .difficulty-widget.difficulty-hard {
  background-color: rgba(244, 67, 54, 0.15);
  color: #c62828;
}

/* ===== Info Chip ===== */

.info-chip {
  background-color: #2196F3;
  color: white;
  border: none;
  padding: 4px 12px;
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.1s ease;
}

.info-chip:hover {
  opacity: 0.85;
}

.info-chip:active {
  transform: scale(0.95);
}

/* ===== HowTo Dialog ===== */

.how-to-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.how-to-content h3 {
  margin-top: 10px;
  margin-bottom: 5px;
}

.how-to-content p {
  margin: 0;
  line-height: 1.4;
}

.example-row {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.example-tile-wrapper {
  margin: 2px;
}

.dialog-spacer {
  height: 20px;
}

.dialog-footer-links {
  margin-top: 10px;
  font-size: 0.8rem;
  text-align: center;
  color: var(--color-text);
  opacity: 0.55;
}

.dialog-footer-links a {
  color: inherit;
  text-decoration: none;
}

.dialog-footer-links a:hover {
  text-decoration: underline;
}

/* ===== Stats Dialog ===== */

.stats-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.stats-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  text-align: center;
}

.stats-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stats-value {
  font-size: 2rem;
  font-weight: bold;
}

.stats-label {
  font-size: 0.75rem;
  opacity: 0.7;
  text-transform: uppercase;
}

.stats-distribution {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stats-bar-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats-bar-label {
  width: 14px;
  text-align: right;
  font-weight: bold;
  font-size: 0.9rem;
}

.stats-bar-track {
  flex: 1;
  background-color: var(--color-unknown);
  border-radius: 4px;
  overflow: hidden;
  min-height: 24px;
}

.stats-bar-fill {
  background-color: var(--color-correct);
  min-width: 24px;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 6px;
}

.stats-bar-fill.stats-bar-empty {
  background-color: var(--color-missing);
}

.stats-bar-count {
  font-size: 0.8rem;
  font-weight: bold;
  color: #fff;
}

.score-widget-button {
  background-color: var(--color-key-bg);
  border: 1px solid var(--color-key-border);
  border-radius: 999px;
  cursor: pointer;
  padding: 5px 8px;
  color: inherit;
  transition: background-color 0.2s ease, transform 0.15s ease, border-color 0.2s ease;
}

.score-widget-button:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

[data-theme="light"] .score-widget-button:hover {
  background-color: rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.2);
}

/* ===== Finish Dialog ===== */

.finish-dialog-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.finish-dialog-header {
  margin-bottom: 8px;
}

.finish-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

.finish-icon-lost {
  font-size: 4rem;
}

.finish-title {
  margin: 0;
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.finish-word-row {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin: 10px 0;
}

.finish-description {
  font-size: 1rem;
  color: var(--color-text);
  max-width: 300px;
  line-height: 1.6;
  margin-top: 4px;
}

.finish-description b {
  display: block;
  margin-bottom: 4px;
}

.finish-guess-count {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 1px;
  opacity: 0.75;
  color: var(--color-text);
}

.finish-buttons {
  display: flex;
  gap: 12px;
  margin-top: 10px;
}

.primary-button.restart-button {
  background-color: var(--color-correct);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: bold;
}

/* ===== Settings Dialog ===== */

.settings-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.settings-content h3 {
  margin: 0 0 8px 0;
}

.settings-section {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-unknown);
}

.settings-section:last-child {
  border-bottom: none;
}

.settings-section h4 {
  margin: 0 0 6px 0;
  font-size: 0.95rem;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.settings-section p {
  margin: 0 0 10px 0;
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.4;
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.settings-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.theme-toggle-button {
  background-color: var(--color-key-bg);
  color: var(--color-text);
  border: 1px solid var(--color-unknown);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background-color 0.2s ease;
}

.theme-toggle-button:hover {
  background-color: rgba(255, 255, 255, 0.18);
}

[data-theme="light"] .theme-toggle-button:hover {
  background-color: rgba(0, 0, 0, 0.12);
}

/* ===== Download / Support Buttons ===== */

.download-buttons,
.support-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
  margin-top: 10px;
}

.download-buttons a img,
.support-buttons a img {
  height: 57px;
  border-radius: 8px;
}

.download-buttons a img {
  background: #000000;
}

.support-buttons a img {
  background: transparent;
}

/* ===== Color-Blind Mode ===== */

[data-colorblind="true"] {
  --color-correct: #0077BB;
  --color-present: #EE7733;
  --color-missing: #555555;
  --color-missing-key: #555555;
}

[data-colorblind="true"] .tile {
  position: relative;
  overflow: hidden;
}

[data-colorblind="true"] .tile.correct::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 3px,
    rgba(255, 255, 255, 0.15) 3px,
    rgba(255, 255, 255, 0.15) 6px
  );
  border-radius: inherit;
  pointer-events: none;
}

[data-colorblind="true"] .tile.present::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 1px, transparent 1px);
  background-size: 6px 6px;
  border-radius: inherit;
  pointer-events: none;
}

/* ===== Responsive: Tablet / Large Phone ===== */

@media (max-width: 600px) {
  .header-title {
    font-size: 1.2rem;
    letter-spacing: 2px;
  }

  .key {
    height: 48px;
    font-size: 1rem;
    border-radius: 6px;
  }

  .tile {
    font-size: 1.8rem;
    border-radius: 5px;
  }

  .dialog-content {
    width: 95%;
    padding: 20px;
    border-radius: 12px;
  }
}

/* ===== Responsive: Small Phone ===== */

@media (max-width: 380px) {
  .keyboard {
    gap: 4px;
    padding: 5px;
  }

  .keyboard-row {
    gap: 3px;
  }

  .key {
    height: 48px;
    font-size: 1rem;
    border-radius: 6px;
  }

  .grid {
    padding: 5px;
    gap: 4px;
  }

  .row {
    gap: 4px;
  }

  .tile {
    border-radius: 4px;
    font-size: 1.5rem;
    border-width: 2px;
  }

  .icon-button {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  .header {
    padding: 10px 10px;
  }

  .header-title {
    font-size: 1rem;
    letter-spacing: 1px;
  }
}

/* ===== Legal Pages ===== */

.legal-page {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  line-height: 1.6;
  color: var(--color-text);
}

.legal-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-unknown);
}

.legal-header h2 {
  color: var(--color-text);
  margin: 0;
}

.legal-body {
  padding: 0 4px;
}

.legal-body h3 {
  color: var(--color-correct);
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.legal-body h4 {
  margin-top: 18px;
  margin-bottom: 8px;
  font-size: 1rem;
  opacity: 0.9;
}

.legal-body p {
  margin: 0 0 10px 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.legal-page a {
  color: #2196F3;
  text-decoration: none;
}

.legal-page a:hover {
  text-decoration: underline;
}

/* ===== SEO Content ===== */

.seo-content {
  width: 100%;
  box-sizing: border-box;
  padding: 24px 16px 48px;
}

.seo-container {
  max-width: 760px;
  margin: 0 auto;
  color: var(--color-text);
  line-height: 1.65;
}

.seo-container h2 {
  margin: 0 0 14px;
  font-size: 1.4rem;
}

.seo-container h3 {
  margin: 18px 0 8px;
  font-size: 1.05rem;
}

.seo-container p {
  margin: 0 0 10px;
}

.seo-list {
  margin: 8px 0 14px;
  padding-left: 20px;
}

.seo-list li {
  margin-bottom: 6px;
}

.seo-links {
  margin-top: 16px;
  font-size: 0.95rem;
}

.seo-links a {
  color: inherit;
}

.seo-faq {
  margin-top: 18px;
}

[data-app-hydrated="true"] .prerender-legal {
  display: none;
}