@font-face {
  font-family: "IBMPlexMono";
  src: url("../IBMPlexMono-Regular.ttf");
}

@font-face {
  font-family: "IBMPlexMonoBold";
  src: url("../IBMPlexMono-Bold.ttf");
  font-weight: 500;
}

:root {
  color-scheme: dark;
  --bg: #020202;
  --fg: #f5f5f5;
  --accent: #5cf2ff;
  --grid-bg: #111;
  --block: #050505;
  --highlight: #2d8fff;
  --solved: #cccccc;
  --wrong: #ff3b30;
  --locked-bg: #dffaf2;
  --locked-fg: #03201a;
  --score-up: #7cf2c1;
  --score-down: #ff8a80;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBMPlexMono", monospace;
  .help-button {
    border: 1px solid #333;
    border-radius: 4px;
    font: inherit;
    background: transparent;
    color: var(--fg);
    padding: 0.35rem 0.75rem;
    cursor: pointer;
    transition: border 0.2s ease, color 0.2s ease;
  }

  .help-button:hover {
    border-color: var(--accent);
    color: var(--accent);
  }
  background: var(--bg);
  color: var(--fg);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
}

.page {
  width: min(1100px, 100%);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

header {

  .alphabet-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 2.4vw, 2.4rem);
}

.subtitle {
  margin: 0.25rem 0 0;
  color: #999;
}

.round-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.score-panel {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;

  .alphabet button.control-key {
    font-weight: 600;
    letter-spacing: 0.08em;
  }
  padding: 0.2rem 0.6rem;
  border: 1px solid #222;
  border-radius: 4px;
  background: rgba(92, 242, 255, 0.08);
}

.score-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #aaa;
}

.modal {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.65);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(2px);
  z-index: 2000;
}

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

body.modal-open {
  overflow: hidden;
}

.modal-content {
  background: #111;
  border: 1px solid #222;
  border-radius: 8px;
  max-width: 520px;
  width: min(520px, 100%);
  padding: 1.5rem;
  position: relative;
  line-height: 1.5;
}

.modal-content h2 {
  margin-top: 0;
}

.modal-content ol {
  padding-left: 1.2rem;
  color: #ccc;
}

.modal-close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  border: none;
  background: transparent;
  color: var(--fg);
  font-size: 1.35rem;
  cursor: pointer;
}

.summary-modal {
  text-align: center;
  padding-block-end: 2.5rem;
}

.summary-heading {
  margin: 0.5rem 0 0;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #bbbbbb;
}

.summary-round {
  margin: 0.1rem 0 1.2rem;
  font-size: 0.95rem;
  color: #999999;
}

.summary-score {
  margin: 0.25rem 0 1.5rem;
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--accent);
}

.summary-score.negative {
  color: var(--score-down);
}

.summary-stats {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.summary-stat {
  min-width: 140px;
  padding: 0.75rem 1rem;
  border: 1px solid #1f1f1f;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
}

.summary-stat span {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9e9e9e;
  margin-bottom: 0.25rem;
}

.summary-stat strong {
  font-size: 1.3rem;
}

.summary-breakdown {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
}

.summary-breakdown li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid #1a1a1a;
}

.summary-breakdown li:last-child {
  border-bottom: none;
}

.summary-breakdown .label {
  font-size: 0.95rem;
  color: #cccccc;
}

.summary-breakdown .value {
  font-size: 1rem;
  font-weight: 600;
}

.summary-breakdown .value.positive {
  color: var(--score-up);
}

.summary-breakdown .value.negative {
  color: var(--score-down);
}

.summary-breakdown .value.final {
  color: var(--accent);
}

.summary-breakdown .value.final-negative {
  color: var(--score-down);
}

.summary-dismiss {
  width: 100%;
  margin-top: 0.5rem;
}

#score-value {
  font-size: 1.35rem;
  font-weight: 600;
}

#score-delta {
  font-size: 0.95rem;
  min-width: 2.5rem;
  text-align: right;
  color: var(--score-up);
}

main {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(260px, 360px);
  gap: 2rem;
}

.grid-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.meta p {
  margin: 0;
}

#grid {
  --cols: 15;
  --cell-size: clamp(22px, 3vw, 44px);
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--cell-size));
  gap: 2px;
  background: var(--grid-bg);
  padding: 8px;
  border-radius: 8px;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  overflow: auto;
}

.cell {
  position: relative;
  width: var(--cell-size);
  height: var(--cell-size);
  border: none;
  font-family: "IBMPlexMonoBold", "IBMPlexMono", monospace;
  font-weight: 500;
  font-size: clamp(1.1rem, 2.2vw, 1.6rem);
  color: #000000;
  background: #cccccc;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.cell.block {
  background: var(--block);
  pointer-events: none;
}

.cell.revealed,
.cell.solved {
  background: #cccccc;
  color: #000000;
}

.cell.locked {
  background: var(--locked-bg);
  color: var(--locked-fg);
  box-shadow: inset 0 0 0 2px rgba(92, 242, 255, 0.45);
}

.cell.locked.revealed,
.cell.locked.solved {
  background: var(--locked-bg);
  color: var(--locked-fg);
}

.cell.locked.locked-wrong {
  box-shadow: inset 0 0 0 2px var(--wrong);
}

.cell.locked.locked-correct {
  box-shadow: inset 0 0 0 2px rgba(124, 242, 193, 0.6);
}

.cell.guess-wrong {
  color: var(--wrong);
}

.cell.highlight {
  outline: 4px solid var(--highlight);
  outline-offset: -4px;
  transform: translateY(-1px);
}

.cell.current-cell {
  background: #ffe066;
  color: #121212;
}

.cell.current-cell.locked {
  background: #ffe066;
  color: #121212;
}

.cell:focus-visible {
  background-color: #ffcc00;
}

.alphabet-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.instructions {
  font-size: 0.9rem;
  color: #bbb;
}

.alphabet {
  display: grid;
  grid-template-columns: repeat(7, minmax(34px, 1fr));
  gap: 0.4rem;
}

.alphabet button {
  border: 1px solid #333;
  border-radius: 4px;
  font: inherit;
  font-size: 1rem;
  padding: 0.4rem 0;
  background: #0d0d0d;
  color: var(--fg);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.alphabet-action {
  border: 1px solid #333;
  border-radius: 4px;
  font: inherit;
  padding: 0.45rem 0.75rem;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: border 0.2s ease, color 0.2s ease;
}

.alphabet-action:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.alphabet-action.wrong {
  background: rgba(255, 59, 48, 0.2);
  color: var(--wrong);
}

.alphabet button:hover:not(:disabled) {
  background: #1c1c1c;
}

.alphabet button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.alphabet button.wrong {
  background: rgba(255, 59, 48, 0.2);
  color: var(--wrong);
}

.status {
  min-height: 1.5rem;
  font-size: 0.95rem;
  color: var(--accent);
}

button#reset-round,
button#next-round {
  border: 1px solid #333;
  border-radius: 4px;
  font: inherit;
  background: transparent;
  color: var(--fg);
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: border 0.2s ease, color 0.2s ease;
}

button#reset-round:hover,
button#next-round:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 960px) {
  body {
    padding: 1rem;
  }

  .page {
    width: 100%;
  }

  main {
    grid-template-columns: 1fr;
  }

  .alphabet {
    grid-template-columns: repeat(6, minmax(34px, 1fr));
  }
}