/* RETRO ARCADE - LiveRamp AI Powered Development
   NES-era pixel aesthetic. No external CSS framework.
   Color palette inspired by the NES default palette, with LiveRamp accent. */

:root {
  --bg: #0a0a1a;
  --fg: #ffffff;
  --muted: #8a8aa8;
  --accent: #00e0ff;      /* electric cyan, LiveRamp-ish */
  --warn: #ff5050;
  --ok: #5dff5d;
  --shadow: #1a1a3a;
  --crt-glow: rgba(0, 224, 255, 0.15);
  --heart: #ff3060;
  --press-start: "Press Start 2P", "Courier New", monospace;
}

* {
  box-sizing: border-box;
  font-family: var(--press-start);
  image-rendering: pixelated;
  -webkit-font-smoothing: none;
  font-smooth: never;
}

html, body {
  margin: 0;
  padding: 0;
  background: #000;
  color: var(--fg);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* CRT wrapper: subtle vignette + scanlines overlay */
#crt {
  position: relative;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at center, var(--bg) 0%, #000 90%);
  padding: 24px 16px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.25) 3px,
    rgba(0, 0, 0, 0.25) 4px
  );
  z-index: 999;
}

/* HUD */
#hud {
  width: 100%;
  max-width: 900px;
  display: flex;
  justify-content: space-between;
  padding: 8px 16px;
  border: 3px solid var(--accent);
  background: #000;
  margin-bottom: 16px;
  font-size: 10px;
  letter-spacing: 1px;
}
#hud.hidden { display: none; }
#hud .label { color: var(--muted); margin: 0 6px 0 0; }
#hud-hearts { display: inline-flex; gap: 4px; margin: 0 12px 0 4px; vertical-align: middle; }
#mute-indicator {
  margin-left: 16px;
  padding: 2px 6px;
  border: 2px solid var(--accent);
  cursor: pointer;
}
#mute-indicator.muted { color: var(--muted); border-color: var(--muted); text-decoration: line-through; }

.heart {
  display: inline-block;
  width: 14px;
  height: 14px;
  background: var(--heart);
  position: relative;
  transform: rotate(45deg);
  margin: 2px;
}
.heart::before, .heart::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--heart);
  border-radius: 50%;
}
.heart::before { top: -7px; left: 0; }
.heart::after { left: -7px; top: 0; }
.heart.empty { background: #333; }
.heart.empty::before, .heart.empty::after { background: #333; }

/* Screens */
#screen {
  width: 100%;
  max-width: 900px;
}
.screen {
  display: none;
  text-align: center;
  padding: 32px 24px;
  border: 4px double var(--accent);
  background: rgba(10, 10, 26, 0.9);
  min-height: 60vh;
}
.screen.active { display: block; }

/* Title */
.title-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 24px 0 12px;
}
.art-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  position: relative;
}
.art-slot[data-img] {
  background-image: var(--bg-img);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}
.art-slot[data-img] > * { display: none; }

.pixel-logo {
  font-size: 36px;
  color: var(--accent);
  text-shadow:
    4px 0 0 var(--shadow),
    -4px 0 0 var(--shadow),
    0 4px 0 var(--shadow),
    0 -4px 0 var(--shadow),
    0 0 16px var(--crt-glow);
  padding: 16px 24px;
  border: 4px solid var(--accent);
  letter-spacing: 4px;
}
.cert-line {
  margin: 16px 0 0;
  font-size: 24px;
  color: var(--fg);
  letter-spacing: 8px;
}
.insert-coin {
  font-size: 18px;
  color: var(--warn);
  margin: 32px 0 8px;
}
.press-any {
  font-size: 11px;
  color: var(--muted);
  margin-top: 8px;
}
.credits {
  margin-top: 48px;
  font-size: 9px;
  color: var(--muted);
}

.blink { animation: blink 0.9s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }

/* Name entry */
#screen-name h2 { color: var(--accent); }
#name-input {
  display: block;
  margin: 24px auto;
  padding: 12px 16px;
  background: #000;
  color: var(--ok);
  border: 3px solid var(--accent);
  font-family: var(--press-start);
  font-size: 16px;
  text-align: center;
  letter-spacing: 2px;
  width: 320px;
  max-width: 90%;
}
#name-input:focus { outline: 2px solid var(--ok); }

.btn {
  background: var(--accent);
  color: #000;
  border: 4px solid var(--fg);
  padding: 14px 20px;
  font-family: var(--press-start);
  font-size: 12px;
  cursor: pointer;
  letter-spacing: 2px;
  box-shadow: 4px 4px 0 var(--shadow);
  transition: transform 0.08s;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--shadow); }
.btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 var(--shadow); }
.btn.ghost { background: transparent; color: var(--accent); }

/* Stage intro */
.stage-num {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 4px;
}
#boss-name {
  font-size: 20px;
  color: var(--warn);
  margin: 16px 0 4px;
  letter-spacing: 2px;
}
.boss-sub {
  color: var(--muted);
  font-size: 9px;
  margin-bottom: 24px;
}
.boss-art {
  min-height: 220px;
  margin: 16px auto;
}

/* CSS-drawn boss placeholders (when no PNG is present).
   Selectors target body[data-stage="N"] so we can swap by stage. */
body[data-stage="1"] .boss-art:not([data-img])::after {
  content: "[]";
  font-size: 80px;
  color: var(--accent);
  text-shadow: 0 0 8px var(--crt-glow);
}
body[data-stage="1"] .boss-art:not([data-img])::before {
  content: "0_0";
  position: absolute;
  font-size: 24px;
  top: 50%; left: 50%;
  transform: translate(-50%, -120%);
  color: var(--warn);
}

body[data-stage="2"] .boss-art:not([data-img])::after {
  content: "(o)";
  font-size: 80px;
  color: var(--accent);
  letter-spacing: -8px;
  text-shadow: 0 0 12px var(--accent);
}
body[data-stage="2"] .boss-art:not([data-img])::before {
  content: "* * *";
  position: absolute;
  font-size: 14px;
  top: 20%; left: 50%;
  transform: translateX(-50%);
  color: var(--ok);
  letter-spacing: 12px;
  width: 240px;
}

body[data-stage="3"] .boss-art:not([data-img]) {
  flex-direction: column;
  gap: 4px;
}
body[data-stage="3"] .boss-art:not([data-img])::after,
body[data-stage="3"] .boss-art:not([data-img])::before {
  content: "";
  height: 30px;
  background: var(--warn);
  border: 2px solid var(--fg);
}
body[data-stage="3"] .boss-art:not([data-img])::after {
  width: 160px;
}
body[data-stage="3"] .boss-art:not([data-img])::before {
  width: 220px;
}

body[data-stage="4"] .boss-art:not([data-img])::after {
  content: "@ @ @";
  font-size: 64px;
  color: var(--warn);
  letter-spacing: 8px;
  text-shadow: 0 0 12px var(--warn);
}
body[data-stage="4"] .boss-art:not([data-img])::before {
  content: "vvvvvvv";
  position: absolute;
  font-size: 24px;
  bottom: 20%; left: 50%;
  transform: translateX(-50%);
  color: var(--warn);
}

body[data-stage="5"] .boss-art:not([data-img])::after {
  content: "[+]";
  font-size: 80px;
  color: var(--ok);
  text-shadow: 0 0 12px var(--ok);
}

body[data-stage="6"] .boss-art:not([data-img])::after {
  content: "===";
  font-size: 64px;
  color: var(--accent);
}
body[data-stage="6"] .boss-art:not([data-img])::before {
  content: "<>";
  position: absolute;
  font-size: 48px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: var(--warn);
}

body[data-stage="7"] .boss-art:not([data-img])::after {
  content: "{}";
  font-size: 96px;
  color: var(--accent);
  text-shadow: 0 0 24px var(--accent);
}

/* Question screen */
.q-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 9px;
  color: var(--muted);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--shadow);
  letter-spacing: 1px;
}
.diff-tag {
  padding: 2px 6px;
  border: 2px solid var(--muted);
  color: var(--muted);
}
.diff-tag.easy { color: var(--ok); border-color: var(--ok); }
.diff-tag.medium { color: var(--accent); border-color: var(--accent); }
.diff-tag.hard { color: var(--warn); border-color: var(--warn); }

.q-prompt {
  font-size: 13px;
  line-height: 1.8;
  text-align: left;
  margin: 16px 0 32px;
  color: var(--fg);
}
.options {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.options .opt {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
  background: #000;
  color: var(--fg);
  border: 3px solid var(--shadow);
  padding: 14px 16px;
  font-family: var(--press-start);
  font-size: 11px;
  line-height: 1.7;
  cursor: pointer;
  width: 100%;
  transition: background 0.06s, border-color 0.06s;
}
.options .opt:hover { border-color: var(--accent); background: #0e0e22; }
.options .opt .key {
  flex: 0 0 28px;
  height: 28px;
  background: var(--accent);
  color: #000;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}
.options .opt.correct { border-color: var(--ok); background: #002a0a; }
.options .opt.wrong   { border-color: var(--warn); background: #2a0008; }
.options .opt.dim     { opacity: 0.35; }

.hint {
  color: var(--muted);
  margin-top: 24px;
  font-size: 9px;
}

/* Stage clear / game over */
.cleared {
  color: var(--ok);
  font-size: 28px;
  letter-spacing: 4px;
  margin: 64px 0 16px;
}
.game-over-text {
  color: var(--warn);
  font-size: 36px;
  letter-spacing: 8px;
  margin: 32px 0;
  text-shadow: 4px 4px 0 var(--shadow);
}
.continue-prompt {
  font-size: 16px;
  color: var(--accent);
  margin: 24px 0 8px;
  letter-spacing: 4px;
}

/* Results */
.results-h {
  color: var(--accent);
  font-size: 24px;
  letter-spacing: 4px;
}
.final-score {
  font-size: 18px;
  color: var(--ok);
  margin: 24px 0;
}
.breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
  margin: 24px 0;
}
.breakdown .b-cell {
  border: 2px solid var(--shadow);
  padding: 12px 8px;
  font-size: 10px;
  background: #000;
}
.breakdown .b-cell .b-week { color: var(--muted); display: block; margin-bottom: 6px; }
.breakdown .b-cell .b-score { color: var(--fg); font-size: 12px; }
.breakdown .b-cell.full { border-color: var(--ok); }
.breakdown .b-cell.half { border-color: var(--accent); }
.breakdown .b-cell.low  { border-color: var(--warn); }

.wrong-list {
  text-align: left;
  margin: 24px 0;
  border: 2px solid var(--shadow);
  padding: 12px;
  background: #000;
  font-size: 10px;
  line-height: 1.7;
}
.wrong-list summary { cursor: pointer; color: var(--accent); padding: 6px; }
.wrong-item {
  border-bottom: 1px dashed var(--shadow);
  padding: 12px 4px;
}
.wrong-item:last-child { border-bottom: none; }
.wrong-item .w-id { color: var(--warn); }
.wrong-item .w-given { color: var(--warn); }
.wrong-item .w-correct { color: var(--ok); }
.wrong-item .w-rationale { color: var(--muted); margin-top: 8px; }

.result-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin: 24px 0;
  flex-wrap: wrap;
}

.muted { color: var(--muted); }
.small { font-size: 9px; }
code {
  background: #000;
  border: 1px solid var(--shadow);
  padding: 2px 4px;
  color: var(--accent);
  font-family: var(--press-start);
  font-size: 9px;
}

@media (max-width: 600px) {
  body { font-size: 12px; }
  .pixel-logo { font-size: 24px; padding: 12px 16px; }
  .cert-line { font-size: 18px; }
  .q-prompt { font-size: 11px; }
  .options .opt { font-size: 10px; }
}