:root {
  color-scheme: dark;
  --bg: #000;
  --bg-accent: #0a1810;
  --fg: #d8ffd8;
  --muted: #74e996;
  --accent: #00ff41;
  --selected: #00e5ff;
  --panel: rgba(5, 18, 10, 0.96);
  --line: rgba(0, 255, 65, 0.35);
  --accent-rgb: 0, 255, 65;
  --control-bg: rgba(0, 30, 12, 0.9);
  --fill-bg: rgba(0, 20, 8, 0.8);
  --keyboard-bg: rgba(3, 12, 6, 0.97);
}

:root[data-theme="glitter"] {
  color-scheme: light;
  --bg: #fff4fc;
  --bg-accent: #fff0fa;
  --fg: #72114f;
  --muted: #bd2781;
  --accent: #ff1493;
  --selected: #9e28d7;
  --panel: rgba(255, 244, 252, 0.97);
  --line: rgba(255, 20, 147, 0.42);
  --accent-rgb: 255, 20, 147;
  --control-bg: rgba(255, 224, 244, 0.94);
  --fill-bg: rgba(255, 241, 250, 0.92);
  --keyboard-bg: rgba(255, 232, 247, 0.98);
}

* {
  box-sizing: border-box;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background: #000 url("assets/background-hacker.png") center top / 402px auto repeat-y;
  color: var(--fg);
  font-family: "Courier New", "Lucida Console", Monaco, monospace;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

:root[data-theme="glitter"] body {
  background-image: url("assets/background-glitter.png");
}

.card {
  position: relative;
  width: 100%;
  max-width: 64rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  box-shadow:
    0 1rem 2.5rem rgba(0, 0, 0, 0.65),
    inset 0 0 3rem rgba(0, 0, 0, 0.2);
}

.site-header {
  margin: 0;
  padding: 0;
}

.site-banner {
  display: block;
  width: 402px;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}

.solved-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.solved-overlay[hidden] {
  display: none;
}

.solved-panel {
  background: var(--bg-accent);
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  padding: 1.25rem;
  width: min(36rem, 90vw);
  box-shadow: 0 0 30px rgba(var(--accent-rgb), 0.16), 0 1rem 2.5rem rgba(0, 0, 0, 0.6);
}

.solved-heading {
  margin: 0 0 1.1rem;
  font-size: 1.25rem;
  color: var(--accent);
  text-align: center;
}

.solved-quote-figure {
  margin: 0 0 1.25rem;
}

.solved-quote {
  margin: 0 0 0.75rem;
  padding: 0;
  border: 0;
  font-size: clamp(1rem, 3.5vw, 1.2rem);
  line-height: 1.6;
  quotes: "\201C" "\201D";
}

.solved-quote::before {
  content: open-quote;
}

.solved-quote::after {
  content: close-quote;
}

.solved-author {
  color: var(--muted);
  font-style: italic;
  font-size: clamp(0.9rem, 3vw, 1rem);
  text-align: right;
}

.solved-author::before {
  content: "\2014\00a0";
}

.solved-close {
  display: block;
  width: 100%;
  padding: 0.6rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--bg);
  background: var(--accent);
  border: 0;
  border-radius: 0.2rem;
  cursor: pointer;
  text-shadow: none;
}

.solved-close:hover,
.solved-close:focus-visible {
  filter: brightness(1.08);
}

.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.settings-overlay[hidden] {
  display: none;
}

.settings-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  padding: 1.25rem;
  width: min(22rem, 90vw);
  box-shadow:
    0 1rem 2.5rem rgba(0, 0, 0, 0.6),
    0 0 20px rgba(var(--accent-rgb), 0.12);
}

.settings-heading {
  margin: 0 0 1.1rem;
  font-size: 1.1rem;
  color: var(--accent);
}

.theme-setting {
  margin: 0 0 1.25rem;
  padding: 0;
  border: 0;
}

.theme-setting legend {
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.theme-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  overflow: hidden;
}

.theme-options label {
  display: flex;
  min-width: 0;
  cursor: pointer;
}

.theme-options label + label {
  border-left: 1px solid var(--line);
}

.theme-options input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.theme-options span {
  width: 100%;
  padding: 0.65rem 0.4rem;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.25;
  text-align: center;
}

.theme-options input:checked + span {
  color: var(--bg);
  background: var(--accent);
  font-weight: 700;
}

.theme-options input:focus-visible + span {
  box-shadow: inset 0 0 0 2px var(--selected);
}

.settings-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.settings-item input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  cursor: pointer;
  accent-color: var(--accent);
}

.settings-close {
  display: block;
  width: 100%;
  padding: 0.6rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--bg);
  background: var(--accent);
  border: 0;
  border-radius: 0.2rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.settings-close:hover,
.settings-close:focus-visible {
  filter: brightness(1.08);
}

.settings-remove {
  display: block;
  width: 100%;
  margin-bottom: 0.75rem;
  padding: 0.6rem;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 0.2rem;
  font-size: 0.95rem;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.settings-remove:hover,
.settings-remove:focus-visible {
  background: rgba(var(--accent-rgb), 0.12);
}

.settings-remove[hidden] {
  display: none;
}

.settings-github {
  display: block;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.settings-github:hover,
.settings-github:focus-visible {
  color: var(--accent);
}

.help-text {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.status {
  margin: 1rem clamp(0.3rem, 1vw, 0.65rem) 0;
  color: var(--muted);
  text-align: center;
  font-size: 1rem;
}

.quote-text {
  margin: 0 0 1rem;
  font-size: clamp(1.25rem, 5vw, 1.9rem);
  quotes: "\201C" "\201D";
}

.quote-text::before {
  content: open-quote;
}

.quote-text::after {
  content: close-quote;
}

.quote-author {
  color: var(--muted);
  font-style: italic;
  font-size: clamp(1rem, 3.5vw, 1.15rem);
  text-align: right;
}

.quote-author::before {
  content: "\2014\00a0";
}

.decoder-grid {
  margin: 1rem clamp(0.3rem, 1vw, 0.65rem) 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-family: "Courier New", Courier, monospace;
  align-items: flex-start;
  overflow-x: auto;
}

.decoder-word {
  display: inline-flex;
  flex: 0 0 auto;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: 0.25rem;
  max-width: 100%;
}

.decoder-word--break {
  flex-wrap: wrap;
  max-width: 100%;
}

.decoder-cell {
  min-width: 1.45rem;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
}

.decoder-fill {
  width: 1.45rem;
  height: 1.55rem;
  border: 1px solid var(--line);
  border-radius: 0.1rem;
  background: var(--fill-bg);
  color: var(--fg);
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  text-transform: uppercase;
}

.decoder-fill[data-selected="true"] {
  border-color: var(--selected);
  box-shadow: 0 0 0 1px var(--selected), 0 0 10px rgba(0, 229, 255, 0.4);
}

.decoder-fill--error {
  border-color: #ff0055;
  color: #ff0055;
  box-shadow: 0 0 0 1px #ff0055;
}

.decoder-cell--wrap-end .decoder-fill {
  border-right-color: var(--accent);
}

.decoder-cell--wrap-start .decoder-fill {
  border-left-color: var(--accent);
}

:root[data-theme="glitter"] .decoder-cell--wrap-end .decoder-fill {
  border-right-width: 3px;
}

:root[data-theme="glitter"] .decoder-cell--wrap-start .decoder-fill {
  border-left-width: 3px;
}

.decoder-encoded {
  color: var(--muted);
  font-size: 0.9rem;
}

.decoder-space {
  min-width: 1.2rem;
  border: 0;
  background: transparent;
  cursor: default;
}

.keyboard {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.5rem
    max(0.5rem, env(safe-area-inset-right))
    max(0.5rem, env(safe-area-inset-bottom))
    max(0.5rem, env(safe-area-inset-left));
  background: var(--keyboard-bg);
  border-top: 1px solid var(--line);
  box-shadow: 0 -0.5rem 1.5rem rgba(0, 0, 0, 0.5);
  z-index: 100;
}

.keyboard-row {
  display: flex;
  gap: 0.35rem;
}

.keyboard-key {
  flex: 1;
  min-height: 2.25rem;
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  background: var(--control-bg);
  color: var(--fg);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  text-shadow: 0 0 6px rgba(231, 255, 231, 0.45);
  cursor: pointer;
}

.keyboard-key:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.keyboard-key[data-used="true"] {
  opacity: 0.4;
  text-shadow: none;
}

.keyboard-key[data-selected="true"] {
  border-color: var(--selected);
  box-shadow: 0 0 0 1px var(--selected), 0 0 10px rgba(0, 229, 255, 0.35);
  opacity: 1;
}

.control-row {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin: 1rem clamp(0.3rem, 1vw, 0.65rem) 10px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  font: inherit;
  font-size: 1.05rem;
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.06);
  border: 1px solid var(--accent);
  border-radius: 0.2rem;
  cursor: pointer;
  touch-action: manipulation;
}

.icon-btn svg {
  width: 1.4rem;
  height: 1.4rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.12);
  box-shadow: 0 0 0 1px var(--accent), 0 0 16px rgba(var(--accent-rgb), 0.3);
}

.icon-btn:active {
  transform: translateY(1px);
}

.icon-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

body.has-keyboard {
  padding-bottom: max(13rem, calc(11rem + env(safe-area-inset-bottom)));
}