:root {
  color-scheme: light;
  --paper: #f4f5f3;
  --surface: #ffffff;
  --ink: #17201d;
  --muted: #5d6864;
  --line: #cbd1ce;
  --line-strong: #7f8b86;
  --accent: #174e40;
  --accent-dark: #0d382e;
  --exact: #176b4e;
  --present: #9a6410;
  --absent: #515b57;
  --danger: #8e302d;
  --focus: #1769aa;
  --shadow: 0 12px 36px rgb(17 35 29 / 9%);
  --radius: 3px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--paper);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgb(23 32 29 / 3%) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 32px;
}

button {
  font: inherit;
}

button:not(:disabled) {
  cursor: pointer;
}

button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.app-shell {
  width: min(100% - 32px, 760px);
  margin-inline: auto;
  padding: 28px 0 22px;
}

.site-header,
.readout,
.input-heading-row,
.dialog-header,
.input-actions,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.development-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 4px 4px 9px;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.development-controls[hidden] {
  display: none;
}

.development-controls select {
  min-height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}

.development-controls .button {
  min-height: 34px;
  padding: 6px 9px;
}

.site-header {
  padding: 0 2px 18px;
  border-bottom: 2px solid var(--ink);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.75rem, 8vw, 2.55rem);
  letter-spacing: 0.18em;
  line-height: 1;
}

h2 {
  margin-bottom: 0;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

h3 {
  margin: 24px 0 8px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.eyebrow {
  margin-bottom: 7px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.69rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.instrument-panel {
  margin-top: 22px;
  padding: clamp(18px, 5vw, 32px);
  border: 1px solid var(--line);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.readout {
  padding-bottom: 11px;
  border-bottom: 1px solid var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.mode-indicator,
.guess-counter {
  margin-bottom: 0;
}

.mode-indicator::before {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--exact);
  content: "";
}

.status {
  min-height: 2.75rem;
  margin: 14px 0 18px;
  padding: 11px 13px;
  border-left: 3px solid var(--line-strong);
  background: #f3f5f4;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.status[data-tone="error"],
.status.error {
  border-color: var(--danger);
  color: var(--danger);
}

.board {
  display: grid;
  gap: 7px;
  width: min(100%, 390px);
  min-height: 0;
  margin-inline: auto;
}

.guess-row,
.board-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 7px;
}

.tile,
.cell,
.guess-cell,
.current-guess > * {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  min-width: 0;
  border: 2px solid var(--line-strong);
  border-radius: 2px;
  background-color: #fff;
  color: var(--ink);
  font-family: "Noto Sans Symbols 2", "Segoe UI Symbol", sans-serif;
  font-size: clamp(1.35rem, 7vw, 2rem);
  font-weight: 650;
}

.tile-glyph {
  line-height: 1;
}

.tile-letter {
  position: absolute;
  right: 4px;
  bottom: 3px;
  min-width: 1.15rem;
  padding: 2px 3px;
  border-radius: 2px;
  background: rgb(255 255 255 / 88%);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.58rem;
  font-weight: 900;
  line-height: 1;
  text-align: center;
}

[data-state="exact"],
[data-feedback="exact"],
.feedback-exact,
.exact,
.correct {
  border-color: var(--exact);
  background-color: var(--exact);
  background-image: linear-gradient(45deg, transparent 44%, rgb(255 255 255 / 18%) 45%, rgb(255 255 255 / 18%) 55%, transparent 56%);
  background-size: 12px 12px;
  color: #fff;
}

[data-state="present"],
[data-feedback="present"],
.feedback-present,
.present {
  border-color: var(--present);
  background-color: var(--present);
  background-image: radial-gradient(circle, rgb(255 255 255 / 24%) 1.2px, transparent 1.5px);
  background-size: 7px 7px;
  color: #fff;
}

[data-state="absent"],
[data-feedback="absent"],
.feedback-absent,
.absent {
  border-color: var(--absent);
  background-color: var(--absent);
  background-image: repeating-linear-gradient(135deg, transparent 0 6px, rgb(255 255 255 / 13%) 6px 8px);
  color: #fff;
}

.input-station {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.slot-count,
.field-help {
  color: var(--muted);
  font-size: 0.76rem;
}

.slot-count {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-transform: uppercase;
}

.current-guess {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 7px;
  width: min(100%, 390px);
  min-height: 50px;
  margin: 12px auto 20px;
}

.current-guess:empty::before {
  grid-column: 1 / -1;
  padding: 16px;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
  content: "No glyphs selected";
  font-size: 0.8rem;
  text-align: center;
}

.field-help {
  max-width: 60ch;
  margin-bottom: 10px;
  line-height: 1.45;
}

.palette {
  display: grid;
  grid-template-columns: repeat(7, minmax(42px, 1fr));
  gap: 6px;
}

.palette button,
.glyph-button {
  position: relative;
  min-height: 58px;
  padding: 7px 4px 15px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: #f9faf9;
  color: var(--ink);
  font-family: "Noto Sans Symbols 2", "Segoe UI Symbol", sans-serif;
  font-size: 1.45rem;
  font-weight: 650;
  line-height: 1;
  transition: border-color 100ms ease, background-color 100ms ease, transform 100ms ease;
  touch-action: manipulation;
}

.palette button:hover,
.glyph-button:hover {
  border-color: var(--accent);
  background: #edf3f0;
}

.palette button:active,
.glyph-button:active {
  transform: translateY(1px);
}

.picker-letter {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
}

.picker-glyph {
  display: block;
  line-height: 1;
}

.input-actions {
  justify-content: flex-end;
  margin-top: 16px;
}

.button,
.icon-button {
  min-height: 44px;
  border-radius: 2px;
  font-weight: 750;
}

.button {
  padding: 10px 16px;
  border: 1px solid var(--accent);
}

.button--primary {
  min-width: 145px;
  background: var(--accent);
  color: #fff;
}

.button--primary:hover:not(:disabled) {
  background: var(--accent-dark);
}

.button--secondary,
.button--quiet {
  background: transparent;
  color: var(--accent);
}

.button--secondary:hover:not(:disabled),
.button--quiet:hover:not(:disabled) {
  background: #e8efec;
}

.button:disabled {
  border-color: var(--line);
  background: #eceeec;
  color: #8a928f;
  cursor: not-allowed;
}

.answer-reveal {
  margin-top: 22px;
  padding: 16px;
  border: 1px solid var(--accent);
  background: #eaf2ef;
  text-align: center;
}

.answer-reveal p {
  margin: 8px 0 0;
}

.reveal-outcome {
  display: block;
  font-size: 1.05rem;
}

.rendered-answer span {
  font-family: "Noto Sans Symbols 2", "Segoe UI Symbol", sans-serif;
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.answer-reveal[hidden] {
  display: none;
}

.site-footer {
  align-items: flex-start;
  padding: 15px 2px 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.rules-dialog {
  width: min(calc(100% - 30px), 610px);
  max-height: min(85vh, 760px);
  padding: 0;
  overflow: auto;
  border: 1px solid var(--line-strong);
  border-top: 5px solid var(--accent);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--surface);
  box-shadow: 0 24px 80px rgb(0 0 0 / 25%);
}

.rules-dialog::backdrop {
  background: rgb(15 25 21 / 58%);
  backdrop-filter: blur(2px);
}

.dialog-header {
  position: sticky;
  z-index: 1;
  top: 0;
  padding: 20px 22px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.dialog-header h2 {
  font-size: 1.35rem;
}

.icon-button {
  display: grid;
  flex: 0 0 44px;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  font-size: 1.5rem;
}

.icon-button:hover {
  background: #edf1ef;
}

.rules-content {
  padding: 20px 22px 26px;
  font-size: 0.92rem;
  line-height: 1.55;
}

.rules-content ol {
  padding-left: 1.35rem;
}

.rules-content li + li {
  margin-top: 8px;
}

.feedback-key {
  display: grid;
  gap: 8px;
  padding: 0;
  list-style: none;
}

.feedback-key li {
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 10px;
}

.key-swatch {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 2px solid;
  color: #fff;
  font-weight: 900;
}

.key-swatch--exact {
  border-color: var(--exact);
  background: var(--exact) linear-gradient(45deg, transparent 44%, rgb(255 255 255 / 18%) 45% 55%, transparent 56%);
  background-size: 12px 12px;
}

.key-swatch--present {
  border-color: var(--present);
  background: var(--present) radial-gradient(circle, rgb(255 255 255 / 24%) 1.2px, transparent 1.5px);
  background-size: 7px 7px;
}

.key-swatch--absent {
  border-color: var(--absent);
  background: var(--absent) repeating-linear-gradient(135deg, transparent 0 6px, rgb(255 255 255 / 13%) 6px 8px);
}

.rules-note {
  margin: 22px 0 0;
  padding: 12px;
  border-left: 3px solid var(--accent);
  background: #edf3f0;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 560px) {
  .app-shell {
    width: min(100% - 20px, 760px);
    padding-top: 18px;
  }

  .site-header {
    align-items: stretch;
    flex-direction: column;
  }

  .instrument-panel {
    padding-inline: 14px;
  }

  .header-actions {
    width: 100%;
    gap: 5px;
  }

  .development-controls {
    flex: 1;
    padding-left: 6px;
  }

  .header-actions .button {
    min-height: 36px;
    padding: 6px 10px;
  }

  .palette {
    grid-template-columns: repeat(5, minmax(45px, 1fr));
  }

  .input-actions .button {
    flex: 1;
  }

  .site-footer {
    display: grid;
    gap: 5px;
  }
}

@media (max-width: 370px) {
  .palette {
    gap: 4px;
  }

  .palette button,
  .glyph-button {
    min-height: 54px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --line: #737c78;
    --line-strong: #26312d;
  }
}