.wordladders-app,
.wordladders-app * {
  box-sizing: border-box;
}

.wordladders-app {
  --paper: #F7F6F2;
  --ink: #1E2A38;
  --rail: #C9C6BE;
  --tile-line: #B4B0A6;
  --change: #1F6F5C;
  --change-on-dark: #7FCDB4;
  --warn: #A8321E;
  --muted: #6B7280;
  --tile: clamp(44px, 8vw, 80px);
  --tile-type: clamp(1.5rem, 4.6vw, 2.8rem);
  background: var(--paper);
  color: var(--ink);
  font-family: "Atkinson Hyperlegible", Verdana, sans-serif;
  line-height: 1.5;
  border-radius: 8px;
  padding: 0 1rem 1rem;
  margin: 1rem 0;
  width: min(960px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.wordladders-app .controls {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin: 1.1rem 0 0;
}

.wordladders-app .levels {
  display: flex;
  gap: 0.35rem;
}

.wordladders-app button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: 2px solid var(--ink);
  border-radius: 2px;
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
}

.wordladders-app button:focus-visible,
.wordladders-app input:focus-visible {
  outline: 3px solid var(--change);
  outline-offset: 2px;
}

.wordladders-app .levels button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}

.wordladders-app .counter {
  margin-left: auto;
  font-size: 0.9rem;
  color: var(--muted);
}

.wordladders-app .stage {
  padding: 1.4rem 0 0.6rem;
  max-height: 58vh;
  overflow-y: auto;
  scrollbar-width: thin;
}

.wordladders-app .ladder.compact {
  --tile: clamp(34px, 5.6vw, 54px);
  --tile-type: clamp(1.1rem, 3.2vw, 1.9rem);
}

.wordladders-app .ladder {
  display: flex;
  flex-direction: column;
}

.wordladders-app .rung {
  display: flex;
  justify-content: center;
}

.wordladders-app .tiles {
  position: relative;
  padding: 5px 26px;
  display: flex;
  gap: 0.4rem;
}

.wordladders-app .tiles::before,
.wordladders-app .tiles::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 9px;
  background: var(--rail);
}

.wordladders-app .tiles::before {
  left: 0;
}

.wordladders-app .tiles::after {
  right: 0;
}

.wordladders-app .rung:first-child .tiles::before,
.wordladders-app .rung:first-child .tiles::after {
  top: 13px;
  border-radius: 5px 5px 0 0;
}

.wordladders-app .rung:last-child .tiles::before,
.wordladders-app .rung:last-child .tiles::after {
  bottom: 13px;
  border-radius: 0 0 5px 5px;
}

.wordladders-app .cell {
  width: var(--tile);
  height: var(--tile);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--tile-type);
  font-weight: 700;
  border: 2px solid var(--tile-line);
  border-radius: 3px;
  background: var(--paper);
}

.wordladders-app .given .cell {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.wordladders-app .empty .cell {
  border-style: dashed;
  color: transparent;
}

.wordladders-app .next .cell {
  border-color: var(--ink);
  border-style: dashed;
  border-width: 3px;
}

.wordladders-app .cell.changed {
  color: var(--change);
  border-color: var(--change);
  border-width: 3px;
}

.wordladders-app .given .cell.changed {
  color: var(--change-on-dark);
  border-color: var(--change-on-dark);
}

.wordladders-app .pop {
  animation: wordladders-pop 0.2s ease-out;
}

@keyframes wordladders-pop {
  from {
    transform: scale(0.85);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.wordladders-app .shake {
  animation: wordladders-shake 0.32s;
}

@keyframes wordladders-shake {
  25% {
    transform: translateX(-7px);
  }
  75% {
    transform: translateX(7px);
  }
}

.wordladders-app .entry {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.wordladders-app input {
  font: inherit;
  font-weight: 700;
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  width: 7.5ch;
  padding: 0.35rem 0.5rem 0.35rem 0.7rem;
  text-align: center;
  border: 2px solid var(--ink);
  border-radius: 2px;
  background: var(--paper);
  color: var(--ink);
}

.wordladders-app input:disabled {
  border-color: var(--tile-line);
  color: var(--muted);
}

.wordladders-app .msg {
  min-height: 1.6em;
  text-align: center;
  font-size: 0.95rem;
  margin: 0.7rem 0 0;
}

.wordladders-app .msg.bad {
  color: var(--warn);
}

.wordladders-app .msg.good {
  color: var(--change);
  font-weight: 700;
}

.wordladders-app .actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  border-top: 2px solid var(--ink);
  padding-top: 0.9rem;
  margin-top: 1.2rem;
}

.wordladders-app .nav {
  margin-left: auto;
  display: flex;
  gap: 0.4rem;
}

@media (prefers-reduced-motion: reduce) {
  .wordladders-app .pop,
  .wordladders-app .shake {
    animation: none;
  }
}