:root {
  --beige: #d8ccb0;
  --beige-dark: #b8a888;
  --brown: #4a3826;
  --brown-dark: #2c2015;
  --phos: #33ff66;
  --panel: #2a2620;
  --panel-line: #4a4238;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'IBM Plex Mono', monospace;
  background:
    radial-gradient(circle at 20% 10%, #3a3228 0%, transparent 50%),
    radial-gradient(circle at 80% 90%, #241f18 0%, transparent 50%),
    #1a1712;
  color: #e8e0cc;
  min-height: 100vh;
}

/* Header */
.coco-header {
  background: linear-gradient(180deg, var(--beige) 0%, var(--beige-dark) 100%);
  color: var(--brown-dark);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 4px solid var(--brown-dark);
  box-shadow: 0 4px 14px rgba(0,0,0,0.5);
}
.title {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 800;
  font-size: clamp(1.1rem, 3.5vw, 1.9rem);
  letter-spacing: -0.5px;
  margin: 0;
}
.badge {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 1px;
  background: var(--brown-dark);
  color: var(--beige);
  padding: 5px 10px;
  border-radius: 4px;
}
.pow-led {
  width: 14px; height: 14px; border-radius: 50%;
  background: #5a1a1a;
  box-shadow: inset 0 0 4px #000;
  transition: all .2s;
}
.pow-led.on {
  background: #ff3b3b;
  box-shadow: 0 0 12px #ff3b3b, inset 0 0 4px #ff8080;
}

/* CRT */
.crt-bezel {
  background: linear-gradient(145deg, var(--beige) 0%, var(--beige-dark) 100%);
  padding: 20px;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6), inset 0 2px 4px rgba(255,255,255,0.3);
  border: 2px solid var(--brown);
}
.crt-screen {
  background: #041004;
  border-radius: 10px;
  padding: 8px;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.9);
  position: relative;
  overflow: hidden;
}
.crt-canvas {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: pixelated;
  border-radius: 4px;
}
.crt-screen.fx::after {
  content: '';
  position: absolute; inset: 8px;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.18) 0px, rgba(0,0,0,0.18) 1px, transparent 2px, transparent 3px);
  pointer-events: none;
  border-radius: 4px;
}
.crt-screen.fx::before {
  content: '';
  position: absolute; inset: 8px;
  box-shadow: inset 0 0 60px rgba(51,255,102,0.12);
  pointer-events: none;
  border-radius: 4px;
  z-index: 2;
}

/* Status bar */
.statusbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--phos);
  background: #0c0f0a;
  border: 1px solid #1f3320;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
}
.status-msg {
  font-size: 0.75rem;
  color: #c9bfa4;
  background: rgba(0,0,0,0.25);
  padding: 6px 10px;
  border-radius: 6px;
  border-left: 3px solid var(--phos);
  margin: 0;
}

/* Chunky keys */
.coco-key {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 0.8rem;
  padding: 9px 14px;
  background: linear-gradient(180deg, #6b5a45 0%, #4a3a28 100%);
  color: #f0e8d4;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  box-shadow: 0 3px 0 #2c2015, 0 4px 6px rgba(0,0,0,0.4);
  transition: transform .05s, box-shadow .05s;
}
.coco-key:active { transform: translateY(2px); box-shadow: 0 1px 0 #2c2015; }
.coco-key.k-green { background: linear-gradient(180deg, #2f7a3a 0%, #1f5528 100%); box-shadow: 0 3px 0 #103018, 0 4px 6px rgba(0,0,0,0.4); }
.coco-key.k-red { background: linear-gradient(180deg, #a83232 0%, #7a1f1f 100%); box-shadow: 0 3px 0 #401010, 0 4px 6px rgba(0,0,0,0.4); }

/* Panels */
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.panel.cassette { border-color: #5a4a2a; background: #2e281c; }
.panel-h {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 4px;
  color: #f0e8d4;
}
.panel-sub { font-size: 0.7rem; color: #9a917c; margin: 0 0 8px; line-height: 1.4; }
.panel-toggle {
  width: 100%;
  text-align: left;
  background: none; border: none;
  font-family: 'Bricolage Grotesque', sans-serif;
  font-weight: 700; font-size: 1rem; color: #f0e8d4;
  cursor: pointer; padding: 0;
}

/* Upload zone */
.upload-zone {
  display: block;
  text-align: center;
  padding: 14px;
  border: 2px dashed #5a5040;
  border-radius: 9px;
  color: var(--phos);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  background: rgba(51,255,102,0.03);
  transition: all .15s;
}
.upload-zone:hover { border-color: var(--phos); background: rgba(51,255,102,0.08); }
.upload-zone.cass { color: #e0b060; border-color: #6a5530; background: rgba(224,176,96,0.05); }
.hidden { display: none; }

/* file rows */
.file-row {
  display: flex; justify-content: space-between; align-items: center;
  gap: 8px;
  background: #201c16;
  border: 1px solid #3a342a;
  border-radius: 7px;
  padding: 7px 9px;
}
.file-name { font-size: 0.75rem; color: #d8cfb8; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 130px; }
.file-size { color: #7a7260; font-size: 0.65rem; }
.hex-prefix { color: var(--phos); font-weight: 700; font-size: 0.85rem; }
.addr-input {
  width: 60px;
  background: #0c0f0a;
  border: 1px solid #2a3a28;
  color: var(--phos);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  padding: 4px 6px;
  border-radius: 5px;
  text-transform: uppercase;
}
.addr-input:focus { outline: 1px solid var(--phos); }
.mini-btn {
  font-size: 0.68rem; font-weight: 600;
  padding: 4px 8px; border: none; border-radius: 5px; cursor: pointer;
}
.mini-btn.load { background: #2f7a3a; color: #fff; }
.mini-btn.del { background: #6a2020; color: #fff; }
.wide-btn {
  width: 100%; padding: 9px; border: none; border-radius: 7px;
  background: linear-gradient(180deg, #3a8a48 0%, #256030 100%);
  color: #fff; font-weight: 700; font-size: 0.85rem; cursor: pointer;
  box-shadow: 0 3px 0 #143518;
}
.wide-btn:active { transform: translateY(2px); box-shadow: 0 1px 0 #143518; }
.mt-3 { margin-top: 12px; }

/* settings */
.setting-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px;
  font-size: 0.78rem; color: #d0c7b0;
  padding: 5px 0;
  border-bottom: 1px solid #322c22;
}
.setting-row:last-child { border-bottom: none; }
.sel {
  background: #0c0f0a; color: var(--phos); border: 1px solid #2a3a28;
  border-radius: 5px; padding: 4px 8px; font-family: inherit; font-size: 0.78rem;
}
.toggle {
  background: #322c22; color: #b0a890; border: 1px solid #4a4238;
  border-radius: 20px; padding: 4px 14px; font-size: 0.72rem; font-weight: 600;
  cursor: pointer; font-family: inherit;
}
.toggle.on { background: #2f7a3a; color: #fff; border-color: #2f7a3a; }

/* inspector */
.reg-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.reg-cell {
  background: #0c0f0a; border: 1px solid #1f3320; border-radius: 5px;
  padding: 5px; text-align: center; display: flex; flex-direction: column;
}
.reg-name { font-size: 0.62rem; color: #7a9a7a; }
.reg-val { font-size: 0.8rem; color: var(--phos); font-weight: 600; }
.cc-row { display: flex; gap: 4px; justify-content: center; }
.cc-flag {
  width: 22px; height: 22px; display: flex; align-items: center; justify-content: center;
  border-radius: 4px; font-size: 0.68rem; font-weight: 700;
  background: #241f18; color: #5a5344; border: 1px solid #3a342a;
}
.cc-flag.on { background: var(--phos); color: #041004; box-shadow: 0 0 8px rgba(51,255,102,0.5); }
.io-box {
  background: #0c0f0a; border: 1px solid #1f3320; border-radius: 6px;
  padding: 8px; font-size: 0.68rem; color: #a0c0a0; line-height: 1.7;
}
.mem-view { }
.hexdump {
  background: #0c0f0a; color: var(--phos);
  font-size: 0.62rem; line-height: 1.4;
  padding: 8px; border-radius: 6px; border: 1px solid #1f3320;
  overflow-x: auto; white-space: pre; margin: 0;
}

/* virtual keyboard */
.vkbd {
  background: #241f18; border: 1px solid #3a342a; border-radius: 10px; padding: 10px;
}
.vkbd-row { display: flex; gap: 4px; justify-content: center; margin-bottom: 4px; flex-wrap: wrap; }
.vk {
  min-width: 26px; padding: 8px 6px;
  background: linear-gradient(180deg, #5a4a38 0%, #3a2e20 100%);
  color: #e8dcc4; border: none; border-radius: 5px;
  font-size: 0.72rem; font-weight: 600; cursor: pointer;
  box-shadow: 0 2px 0 #201810;
  font-family: 'IBM Plex Mono', monospace;
}
.vk:active { transform: translateY(1px); box-shadow: 0 1px 0 #201810; }
.vk-wide { min-width: 120px; }

/* footer */
.coco-footer {
  background: var(--brown-dark);
  color: #a89880;
  font-size: 0.72rem;
  padding: 14px 18px;
  text-align: center;
  border-top: 3px solid var(--brown);
  margin-top: auto;
}
.remix { color: var(--phos); font-weight: 600; text-decoration: none; border-bottom: 1px dotted var(--phos); }
.remix:hover { color: #66ff88; }

@media (max-width: 640px) {
  .reg-grid { grid-template-columns: repeat(4, 1fr); }
  .vk { min-width: 22px; padding: 7px 4px; font-size: 0.65rem; }
  .vk-wide { min-width: 80px; }
}