/* kT — Game of Life (standalone C64-Look) */

@font-face {
  font-family: "VT323";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/vt323-latin.woff2") format("woff2");
}

:root {
  --c64-cyan: #74f7ff;
  --c64-green: #7fff73;
  --c64-blue: #352879;
  --bg: #090b12;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  min-width: 20rem;
  min-height: 100dvh;
  background: #070912;
  color: var(--c64-cyan);
  font-family: "VT323", ui-monospace, monospace;
  font-size: 1.25rem;
  line-height: 1.35;
  text-transform: uppercase;
}

a {
  color: var(--c64-cyan);
}

/* Container */
.c64menu {
  display: grid;
  place-items: center;
  padding: 24px;
  min-height: 100dvh;
  padding-top: max(24px, env(safe-area-inset-top));
  padding-bottom: max(24px, env(safe-area-inset-bottom));
}

.c64menu-frame {
  display: inline-block;
  max-width: min(100%, 52rem);
  border: 2px solid var(--c64-cyan);
  background: var(--bg);
  padding: 16px;
  box-shadow: 0 0 26px rgba(116, 247, 255, 0.24);
  text-align: left;
}

.c64menu-head {
  margin: 4px 0;
  color: var(--c64-cyan);
}

.c64menu-line {
  margin: 2px 0;
}

.c64menu-line.ok {
  color: var(--c64-green);
}

.c64menu-list {
  display: grid;
  gap: 8px;
  margin: 10px 0;
  justify-items: stretch;
}

.c64menu-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 10px;
  border: 1px solid var(--c64-cyan);
  background: transparent;
  color: var(--c64-cyan);
  font: inherit;
  text-transform: inherit;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, box-shadow 0.2s, outline-color 0.15s;
}

.c64menu-item[hidden] {
  display: none !important;
}

.c64menu-item:hover,
.c64menu-item:focus-visible {
  background: rgba(116, 247, 255, 0.18);
  box-shadow: 0 0 6px rgba(116, 247, 255, 0.25) inset;
}

.c64menu-item.active {
  background: rgba(116, 247, 255, 0.25);
  outline: 2px solid var(--c64-green);
  outline-offset: 1px;
}

.num,
.hot {
  color: var(--c64-green);
  margin-right: 2px;
}

.foot-min {
  margin-top: 8px;
}

.c64menu-cursor {
  display: inline-block;
  width: 9px;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .c64menu-cursor { animation: none; }
}

.c64menu-legal {
  margin-top: 12px;
  font-size: 0.9em;
  text-align: center;
  opacity: 0.9;
}

.c64menu-legal a {
  color: var(--c64-cyan);
  text-decoration: none;
  padding: 0 4px;
}

.c64menu-legal a:hover {
  text-decoration: underline;
  opacity: 1;
}

.panel {
  margin-top: 12px;
}

.panel h2 {
  margin: 0 0 0.6rem;
  color: var(--c64-cyan);
  font-size: 1.5rem;
  font-weight: 400;
}

.panel p {
  margin: 0 0 0.7rem;
}

.panel.legal p,
.panel.legal h2 {
  text-transform: none;
}

.btn-c64 {
  font: inherit;
  text-transform: inherit;
  cursor: pointer;
  padding: 6px 12px;
  border: 1px solid var(--c64-cyan);
  background: rgba(0, 0, 0, 0.6);
  color: var(--c64-cyan);
  box-shadow: 0 0 6px rgba(116, 247, 255, 0.25) inset;
  transition: background 0.2s, box-shadow 0.2s;
}

.btn-c64:hover,
.btn-c64:focus-visible {
  background: rgba(116, 247, 255, 0.18);
  box-shadow: 0 0 8px rgba(116, 247, 255, 0.35);
}

.btn-c64:active {
  transform: translateY(1px);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 8px 0 10px;
}

.controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px dashed var(--c64-cyan);
  padding: 4px 8px;
}

.controls input[type="range"] {
  width: min(160px, 36vw);
}

.controls .wrap {
  border: none;
  padding: 0;
}

.canvas-wrap {
  position: relative;
  width: min(100%, 720px);
  aspect-ratio: 1 / 1;
  border: 2px solid var(--c64-cyan);
  margin: 8px 0;
  background: #05060c;
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.35) inset, 0 0 24px rgba(116, 247, 255, 0.15);
}

#life {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  user-select: none;
  image-rendering: pixelated;
}

.hint,
.line {
  opacity: 0.85;
}

#installBtn {
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid var(--c64-cyan);
  color: var(--c64-cyan);
  padding: 6px 12px;
  box-shadow: 0 0 6px rgba(116, 247, 255, 0.25) inset;
}

@media (max-width: 600px) {
  body { font-size: 1.1rem; }
  .c64menu { padding: 16px; }
  .c64menu-frame { padding: 14px; }
  .c64menu-item {
    padding: 8px 10px;
    white-space: normal;
  }
  .controls input[type="range"] { width: min(140px, 42vw); }
}