:root {
  --bg: #07080c;
  --panel: #12141c;
  --ink: #e8ecf4;
  --muted: #8b93a7;
  --accent: #ff3b4e;
  --accent2: #3dffb2;
  --amber: #ffc14d;
  --bezel: #1a1d28;
  --line: #2a3040;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(1200px 600px at 20% -10%, #1a1020 0%, transparent 50%),
    radial-gradient(900px 500px at 110% 10%, #0a1e22 0%, transparent 45%),
    var(--bg);
  color: var(--ink);
  overflow-x: hidden;
}

.scanline-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.015) 0px,
    rgba(255, 255, 255, 0.015) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px 8px;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.logo-mark {
  color: var(--accent);
  font-size: 14px;
  animation: pulse 1.6s ease-in-out infinite;
}
h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.28em;
  font-weight: 800;
}
.tag {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--accent2);
}
.status {
  display: flex;
  align-items: center;
  gap: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 13px;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 0 rgba(61, 255, 178, 0.6);
}
.dot.on {
  background: var(--accent2);
  box-shadow: 0 0 10px var(--accent2);
}

main { padding: 8px 24px 24px; }
.stage {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) 320px;
  gap: 28px;
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
}

.bezel {
  background: linear-gradient(180deg, #222636, #14161e);
  border: 1px solid #33384a;
  border-radius: 18px;
  padding: 22px 22px 14px;
  box-shadow: var(--shadow);
}
.crt-wrap {
  position: relative;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 256 / 240;
  display: grid;
  place-items: center;
}
.crt-wrap[data-system="gb"],
.crt-wrap.is-gb { aspect-ratio: 160 / 144; }
#screen {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  display: block;
  background: #000;
}
.crt-wrap.is-gb #screen {
  visibility: hidden;
  pointer-events: none;
}
.crt-wrap.smooth #screen,
.crt-wrap.smooth .ejs_canvas { image-rendering: auto; }
#gb-player {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.crt-wrap.is-gb #gb-player { display: block; }
#gb-player .ejs_parent,
#gb-player .ejs_game,
#gb-player .ejs_canvas_parent {
  width: 100% !important;
  height: 100% !important;
}
#gb-player .ejs_canvas {
  width: 100% !important;
  height: 100% !important;
  object-fit: contain;
  image-rendering: pixelated;
}
#gb-player .ejs_virtual_gamepad { z-index: 4; }
.crt-glass, .crt-vignette {
  position: absolute; inset: 0; pointer-events: none; z-index: 2;
}
.crt-wrap.crt-on .crt-glass {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), transparent 18%, transparent 72%, rgba(0,0,0,0.25)),
    repeating-linear-gradient(
      to bottom,
      rgba(0,0,0,0.15) 0px,
      rgba(0,0,0,0.15) 1px,
      transparent 1px,
      transparent 3px
    );
  mix-blend-mode: overlay;
}
.crt-wrap.crt-on .crt-vignette {
  box-shadow: inset 0 0 80px 18px rgba(0,0,0,0.55);
  border-radius: 8px;
}
.crt-wrap.crt-on #screen,
.crt-wrap.crt-on .ejs_canvas {
  filter: contrast(1.12) saturate(1.15) brightness(1.05);
}

.hint {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin: 12px 0 4px;
}
.hint code {
  color: var(--amber);
  background: #0006;
  padding: 1px 6px;
  border-radius: 4px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: #1c2030;
  color: var(--ink);
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { border-color: #4a5570; background: #252a3c; }
.btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
}
.btn.primary:hover { filter: brightness(1.08); }
.chk {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}
.meter {
  display: flex;
  justify-content: space-between;
  padding: 10px 0 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.panel h2 {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 16px 0 8px;
}
.keys { width: 100%; border-collapse: collapse; font-size: 13px; }
.keys td { padding: 5px 0; }
.keys td:first-child { color: var(--amber); width: 72px; }
.note, .legal { color: var(--muted); font-size: 12px; line-height: 1.45; }
.legal { margin-bottom: 0; }

footer {
  max-width: 1180px;
  margin: 0 auto 24px;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  color: #667;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.stage.drag {
  outline: 2px dashed var(--accent2);
  outline-offset: 6px;
  border-radius: 12px;
}

dialog#drive-setup,
dialog#zip-pick {
  max-width: 520px;
  width: calc(100% - 32px);
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
dialog#drive-setup::backdrop,
dialog#zip-pick::backdrop { background: rgba(0, 0, 0, 0.65); }
.drive-form h2 { margin: 0 0 8px; letter-spacing: 0.12em; font-size: 14px; }
.drive-form p, .drive-form li { color: var(--muted); font-size: 13px; line-height: 1.45; }
.drive-form ul, .drive-form ol { padding-left: 1.2em; }
.drive-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 10px 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.drive-form input {
  appearance: none;
  background: #0c0e14;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  padding: 8px 10px;
  font-size: 13px;
}
.zip-list {
  list-style: none;
  margin: 12px 0;
  padding: 0;
  max-height: 50vh;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.zip-list .btn { width: 100%; text-align: left; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

@media (max-width: 900px) {
  .stage { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
}