:root {
  color-scheme: light;
  --cell-size: 56px;
  --border-color: #2563eb;
  --bg: #f8f9fa;
  --fg: #1f2937;
  --panel-bg: #e0f2fe;
  --panel-border: #bfdbfe;
  --panel-shadow: 0 14px 28px rgba(37, 99, 235, 0.18);
  --black-cell: #0f172a;
  --total-bg: #f1f5f9;
  --total-progress: #fde2e9;
  --total-progress-fg: #9f1239;
  --total-complete: #dcfce7;
  --total-complete-fg: #166534;
  --input-color: #0f172a;
  --input-bg: transparent;
  --star-color: #f97316;
  --table-border: #bfdbfe;
  --table-header-bg: #dbeafe;
  --token-bg: #413bf6;
  --token-bg-used: #d1d5db;
  --token-color: #ffffff;
  --token-color-used: #4b5563;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 32px 20px 40px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1; /*1.65;*/
  background: linear-gradient(180deg, rgba(219, 234, 254, 0.65) 0%, rgba(248, 250, 252, 0.92) 100%);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  gap: 15px; /*32px;*/
  align-items: center;
}

body.modal-open {
  overflow: hidden;
}


h1 {
  margin: 0;
  font-size: 32px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #1d4ed8;
}

.brand-logo {
  width: min(60vw, 340px);
  height: auto;
  display: block;
}

.toggle-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.info-button-row {
  margin-top: 0px;
  display: flex;
  justify-content: center;
}

.how-to-button,
.modal-action {
  appearance: none;
  border: none;
  background: #111111;
  color: #ffffff;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.how-to-button:hover,
.modal-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.28);
}

.how-to-button:focus,
.modal-action:focus {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 3px;
}

.modal-action {
  display: flex;
  margin: 24px auto 0;
}

.grid-toggle {
  appearance: none;
  border: 2px solid #1d4ed8;
  background: transparent;
  color: #1d4ed8;
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.grid-toggle.active {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.25);
}

.grid-toggle:not(.active):hover {
  background: rgba(37, 99, 235, 0.12);
}
.grid-toggle[disabled],
.grid-toggle.unavailable {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}


.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 800;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
}

.modal-dialog {
  position: relative;
  background: #e9f2fe;
  color: var(--fg);
  border: 4px solid #1d4ed8;
  border-radius: 18px;
  padding: 32px 28px 28px;
  width: min(520px, 90vw);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.25);
}

.modal-dialog h2 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #1d4ed8;
  text-align: center;
}

.modal-subheading {
  margin: 8px 0 0;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #1f2937;
  text-align: center;
}

.modal-list {
  margin: 16px 0;
  padding-left: 22px;
  font-size: 1rem;
}

.modal-list li {
  margin-bottom: 8px;
}

.modal-tips-heading {
  margin: 24px 0 8px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #1f2937;
  text-align: center;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  border: none;
  background: transparent;
  color: #0f172a;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: #1d4ed8;
}


/* Timer Section - Properly Centered */
.timer-section {
    text-align: center;
    margin: 0;
    padding: 0px;
    width: 100%;
}

.timer-display {
    text-align: center;
    font-size: 1.1em;
    color: #374151;
}

#timer-text {
    font-family: 'Courier New', monospace;
    color: #2563eb;
    font-size: 1.5em;
    font-weight: bold;
    margin-right: 15px;
}

#completion-message {
    color: #065f46;
    background: #d1fae5;
    padding: 8px 16px;
    border-radius: 15px;
    border: 1px solid #10b981;
    font-size: 0.95em;
    margin-left: 15px;
 }
 






.board-area {
  display: flex;
  gap: 24px;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
}

.grid-wrapper,
.letter-panel {
  display: none;
}

.grid-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols, 6), var(--cell-size));
  grid-auto-rows: var(--cell-size);
  border: 3px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
}

.grid-stack {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.letter-array {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.letter-array-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
}

.letter-card {
  position: relative;
  border: 1px solid rgba(37, 99, 235, 0.25);
  background: rgba(255, 255, 255, 0.95);
  border-radius: 14px;
  min-height: 80px;
  padding: 18px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.12);
}

.letter-card-vowel {
  background: linear-gradient(180deg, rgba(219, 234, 254, 0.95) 0%, rgba(255, 255, 255, 0.95) 100%);
}

.letter-card-consonant {
  background: rgba(255, 255, 255, 0.95);
}

.letter-card-empty {
  border-style: dashed;
  border-color: rgba(148, 163, 184, 0.45);
  box-shadow: none;
  background: transparent;
}

.letter-card-absent {
  border-style: dashed;
  border-color: rgba(148, 163, 184, 0.55);
  background: rgba(226, 232, 240, 0.45);
  color: #475569;
  box-shadow: none;
}

.letter-card-absent .letter-card-value {
  color: #475569;
}

.letter-card.depleted {
  background: var(--total-progress);
  color: var(--total-progress-fg);
  box-shadow: none;
}

.letter-card.partial {
  box-shadow: 0 10px 24px rgba(234, 179, 8, 0.26);
}

.letter-card-letter {
  font-size: 1.4rem;
  line-height: 1;
}

.letter-card-value {
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #1e3a8a;
}

.letter-card-token-strip {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.letter-card-token {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--token-bg);
  opacity: 0.65;
  transition: opacity 0.2s ease, background 0.2s ease;
}

.letter-card-token.used {
  background: var(--token-bg-used);
  opacity: 0.65;
}

.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  border: 1px solid rgba(37, 99, 235, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 600;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.95);
  position: relative;
  transition: background 0.25s ease;
}

.cell.black {
  background: var(--black-cell);
  border-color: var(--black-cell);
}

.cell.total {
  background: var(--total-bg);
  font-size: 1.2rem;
  font-weight: 700;
  color: #1e293b;
  transition: background 0.25s ease, color 0.25s ease;
}

.cell.total.progress {
  background: var(--total-progress);
  color: var(--total-progress-fg);
}

.cell.total.complete {
  background: var(--total-complete);
  color: var(--total-complete-fg);
}

.cell.no-total {
  background: #e2e8f0;
  border-top: 0;
  border-left: 0;
}

.cell[data-mask="star"]::before {
  content: '*';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--star-color);
  font-size: 1.8rem;
  font-weight: 700;
  pointer-events: none;
  transition: opacity 0.15s ease-in-out;
}

.cell.filled[data-mask="star"]::before {
  opacity: 0;
}

.cell input {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  background: var(--input-bg);
  color: var(--input-color);
  font: inherit;
  text-align: center;
  text-transform: uppercase;
}

.cell input::placeholder {
  color: rgba(100, 116, 139, 0.55);
}

.cell input:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.7);
  outline-offset: -2px;
  box-shadow: 0 0 0 3px rgba(191, 219, 254, 0.9);
}

.letter-panel {
  display: none;
}

.letter-table {
  flex: 1 1 auto;
  border-collapse: collapse;
  width: 100%;
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 14px;
  overflow: hidden;
}

.letter-table th,
.letter-table td {
  border: 1px solid var(--table-border);
  padding: 9px 14px;
  text-align: left;
  min-width: 72px;
  vertical-align: middle;
}

.letter-table th[colspan="2"] {
  background: linear-gradient(180deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.letter-table thead tr:nth-child(2) th {
  background: var(--table-header-bg);
  color: #1d4ed8;
  font-weight: 700;
}

.letter-table tbody tr:nth-child(even) {
  background: rgba(219, 234, 254, 0.55);
}

.letter-table tbody td {
  font-size: 1.05rem;
}

.letter-table td.value-cell {
  color: #1e3a8a;
  font-weight: 700;
  text-align: center;
}

.letter-token {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin: 0 6px 6px 0;
  background: var(--token-bg);
  color: var(--token-color);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  transition: opacity 0.2s ease;
}

.letter-token.used {
  background: var(--token-bg-used);
  color: var(--token-color-used);
  text-decoration: line-through;
  opacity: 0.55;
}

.reset-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 12px;
}

.reset-button {
  appearance: none;
  border: 2px solid #1d4ed8;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 12px 42px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 14px 24px rgba(37, 99, 235, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.reset-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 28px rgba(37, 99, 235, 0.32);
  filter: brightness(1.05);
}

.reset-button:active {
  transform: translateY(1px);
  box-shadow: 0 10px 18px rgba(37, 99, 235, 0.24);
}

.reset-button:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.55);
  outline-offset: 4px;
}

.legend {
  font-size: 1rem;
  line-height: 1.7;
  max-width: 640px;
  text-align: center;
  color: #334155;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(191, 219, 254, 0.8);
  padding: 16px 24px;
  border-radius: 18px;
}

.legend strong {
  color: #1d4ed8;
}

@media (max-width: 900px) {
  :root {
    --cell-size: 48px;
  }
  h1 {
    font-size: 28px;
  }
  .cell {
    font-size: 1.4rem;
  }
  .letter-card {
    min-height: 80px;
    padding: 16px 14px;
    font-size: 1.4rem;
  }
  .letter-card-letter {
    font-size: 1.8rem;
  }
}

@media (max-width: 820px) {
  .board-area {
    flex-direction: column;
    align-items: center;
    gap: 22px;
  }
  .grid-wrapper,
  .letter-panel {
    width: 100%;
    max-width: none;
  }
  .grid-wrapper {
    order: 0;
  }
  .letter-panel {
    order: 1;
    min-width: 0;
  }
}
@media (max-width: 640px) {
  :root {
    --cell-size: 42px;
  }
  body {
    padding: 20px 12px 28px;
    gap: 24px;
  }
  .toggle-buttons {
    flex-wrap: wrap;
    gap: 10px;
  }
  .info-button-row {
    margin-top: 0px;
  }
  .how-to-button,
  .modal-action {
    width: 100%;
    max-width: 320px;
  }
  .modal-dialog {
    width: 92vw;
    padding: 28px 22px 24px;
  }
  .grid-toggle {
    flex: 0 1 auto;
    min-width: 120px;
    padding: 8px 16px;
  }
  .board-area {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }
  .grid-wrapper,
  .letter-panel {
    width: 100%;
    max-width: none;
  }
  .letter-panel {
    min-width: 0;
  }
  .letter-array {
    gap: 10px;
  }
  .letter-array-row {
    gap: 10px;
  }
  .letter-card {
    min-height: 72px;
    padding: 14px 12px;
    font-size: 1.3rem;
  }
  .letter-card-letter {
    font-size: 1.6rem;
  }
  .letter-card-token-strip {
    bottom: 8px;
    gap: 4px;
  }
  .letter-card-token {
    width: 10px;
    height: 10px;
  }
  .letter-table {
    font-size: 0.9rem;
  }
  .letter-table th,
  .letter-table td {
    padding: 8px 10px;
  }
  .letter-token {
    width: 24px;
    height: 24px;
    font-size: 0.8rem;
  }
  .legend {
    font-size: 0.95rem;
    padding: 14px 18px;
  }
}

@media (max-width: 480px) {
  :root {
    --cell-size: 36px;
  }
  body {
    padding: 18px 10px 24px;
  }
  h1 {
    font-size: 24px;
  }
  .cell {
    font-size: 1.2rem;
  }
  .grid-toggle {
    flex: 0 1 auto;
    min-width: 110px;
    padding: 8px 10px;
    font-size: 0.7rem;
  }
  .how-to-button,
  .modal-action {
    width: 100%;
    max-width: none;
  }
  .modal-dialog {
    width: 94vw;
    padding: 24px 18px 22px;
  }
  .letter-array {
    gap: 8px;
  }
  .letter-array-row {
    gap: 8px;
  }
  .letter-card {
    min-height: 66px;
    padding: 12px 10px;
    font-size: 1.2rem;
  }
  .letter-card-letter {
    font-size: 1.4rem;
  }
  .letter-card-token-strip {
    bottom: 6px;
    gap: 3px;
  }
  .letter-card-token {
    width: 9px;
    height: 9px;
  }
  .letter-table th,
  .letter-table td {
    padding: 7px 8px;
  }
  .legend {
    font-size: 0.9rem;
  }
}