:root {
  --bg-dark: #0a0a1a;
  --bg-panel: #0d0d24;
  --green: #33ff33;
  --green-dim: #1a5c1a;
  --green-glow: #33ff3366;
  --amber: #ffaa00;
  --cyan: #00cccc;
  --red: #ff3333;
  --magenta: #ff33ff;
  --white: #e0e0e0;
  --gray: #444466;
  --gray-dim: #222244;
  --font: 'Fira Code', 'Courier New', 'Lucida Console', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg-dark);
  color: var(--green);
  font-family: var(--font);
  font-size: 12px;
  overflow-x: hidden;
  min-height: 100vh;
}

#root { min-height: 100vh; display: flex; flex-direction: column; }

.scanline-overlay {
  pointer-events: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  z-index: 9999;
}

.glow { text-shadow: 0 0 6px var(--green-glow), 0 0 12px rgba(51, 255, 51, 0.2); }
.glow-amber { text-shadow: 0 0 6px rgba(255, 170, 0, 0.5), 0 0 12px rgba(255, 170, 0, 0.2); }

.panel {
  border: 1px solid var(--green-dim);
  background: var(--bg-panel);
  border-radius: 2px;
  overflow: hidden;
}

.panel-title {
  font-size: 10px;
  color: var(--cyan);
  padding: 4px 8px;
  background: rgba(0, 204, 204, 0.08);
  border-bottom: 1px solid var(--green-dim);
  letter-spacing: 1px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  border-bottom: 2px solid var(--green-dim);
  background: linear-gradient(180deg, #0f0f2a 0%, #0a0a1a 100%);
}

.header-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--green);
}

.header-subtitle {
  font-size: 9px;
  color: var(--cyan);
  letter-spacing: 1px;
}

.status-badge {
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 10px;
  font-weight: 600;
}

.status-ok { background: rgba(51, 255, 51, 0.15); color: var(--green); border: 1px solid var(--green-dim); }
.status-err { background: rgba(255, 51, 51, 0.15); color: var(--red); border: 1px solid #5c1a1a; }

.main-layout {
  display: grid;
  grid-template-columns: 260px 1fr 280px;
  gap: 8px;
  padding: 8px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.column { display: flex; flex-direction: column; gap: 8px; min-height: 0; overflow-y: auto; }

.register-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 8px;
  font-size: 13px;
}

.register-label { color: var(--cyan); font-weight: 600; }
.register-value { color: var(--green); font-weight: 700; font-size: 14px; }
.register-value.changed { color: var(--amber); animation: flash-amber 0.4s; }

@keyframes flash-amber {
  0% { color: var(--amber); text-shadow: 0 0 10px rgba(255, 170, 0, 0.8); }
  100% { color: var(--green); text-shadow: none; }
}

.flag-row { display: flex; gap: 4px; padding: 4px 8px; flex-wrap: wrap; }

.flag-box {
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700;
  border: 1px solid var(--green-dim);
  border-radius: 2px;
}

.flag-set { background: rgba(51, 255, 51, 0.2); color: var(--green); }
.flag-clear { background: rgba(68, 68, 102, 0.3); color: var(--gray); }

.btn {
  padding: 4px 10px;
  background: var(--bg-panel);
  color: var(--green);
  border: 1px solid var(--green-dim);
  font-family: var(--font);
  font-size: 11px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s;
  user-select: none;
}

.btn:hover { background: rgba(51, 255, 51, 0.1); border-color: var(--green); }
.btn:active { transform: translateY(1px); }
.btn.active { background: rgba(51, 255, 51, 0.15); border-color: var(--green); color: var(--amber); }

.btn-run.running {
  animation: pulse-glow 1s infinite;
  border-color: var(--amber);
  color: var(--amber);
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 4px rgba(255, 170, 0, 0.3); }
  50% { box-shadow: 0 0 12px rgba(255, 170, 0, 0.6); }
}

.control-bar {
  display: flex; gap: 6px; padding: 6px 8px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--green-dim);
  background: rgba(0, 0, 0, 0.3);
}

.disasm-view {
  flex: 1;
  overflow-y: auto;
  font-size: 11px;
  min-height: 200px;
}

.disasm-line {
  display: flex;
  padding: 1px 8px;
  cursor: pointer;
  align-items: center;
  gap: 8px;
}

.disasm-line:hover { background: rgba(51, 255, 51, 0.05); }
.disasm-line.current { background: rgba(255, 170, 0, 0.12); }

.disasm-bp {
  width: 10px; font-size: 10px; color: var(--red);
  cursor: pointer; flex-shrink: 0;
}

.disasm-addr { color: var(--cyan); width: 50px; flex-shrink: 0; }
.disasm-bytes { color: var(--gray); width: 75px; flex-shrink: 0; }
.disasm-instr { font-weight: 600; flex: 1; }
.disasm-cycles { color: var(--gray); font-size: 10px; flex-shrink: 0; width: 35px; text-align: right; }

.cat-misc { color: var(--white); }
.cat-jump { color: var(--cyan); }
.cat-load { color: var(--amber); }
.cat-arith { color: var(--green); }
.cat-shift { color: var(--magenta); }

.hex-view {
  overflow-y: auto;
  font-size: 10px;
  line-height: 1.6;
  min-height: 120px;
}

.hex-row { display: flex; padding: 0 6px; white-space: nowrap; }
.hex-addr { color: var(--cyan); width: 45px; flex-shrink: 0; }
.hex-bytes { flex: 1; }
.hex-byte { display: inline-block; width: 22px; text-align: center; }
.hex-byte.pc-here { background: rgba(255, 170, 0, 0.15); color: var(--amber); }
.hex-byte.written { color: var(--amber); animation: flash-amber 0.5s; }
.hex-ascii { color: var(--gray); width: 140px; flex-shrink: 0; padding-left: 8px; }

.stack-view {
  overflow-y: auto;
  font-size: 10px;
  max-height: 140px;
}

.stack-row { padding: 1px 8px; display: flex; gap: 8px; }
.stack-row.current { background: rgba(255, 170, 0, 0.12); color: var(--amber); }

.console-panel {
  border-top: 2px solid var(--green-dim);
  background: var(--bg-panel);
  max-height: 160px;
  display: flex;
  flex-direction: column;
}

.console-log {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
  font-size: 10px;
  min-height: 60px;
  max-height: 120px;
}

.console-log-line { padding: 1px 0; }
.log-reset { color: var(--cyan); }
.log-error { color: var(--red); }
.log-ror { color: var(--magenta); }
.log-info { color: var(--green); }
.log-stop { color: var(--amber); }

.console-input {
  display: flex;
  border-top: 1px solid var(--green-dim);
  padding: 4px 8px;
  align-items: center;
}

.console-input input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
  outline: none;
}

.pixel-display {
  display: grid;
  grid-template-columns: repeat(32, 1fr);
  gap: 0;
  aspect-ratio: 1;
  border: 1px solid var(--green-dim);
  background: #000;
  image-rendering: pixelated;
}

.pixel-display canvas {
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  border: 1px solid var(--green-dim);
}

.ror-panel {
  padding: 8px;
  font-size: 10px;
  line-height: 1.5;
}

.ror-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  margin-top: 4px;
  border: 1px solid var(--green-dim);
  border-radius: 2px;
}

.ror-light {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--gray);
  transition: all 0.2s;
}

.ror-light.active {
  background: var(--magenta);
  box-shadow: 0 0 8px rgba(255, 51, 255, 0.6);
}

.toggle-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  cursor: pointer;
  font-size: 10px;
}

.toggle-track {
  width: 28px; height: 14px;
  background: var(--gray);
  border-radius: 7px;
  position: relative;
  transition: all 0.2s;
}

.toggle-track.on { background: var(--green-dim); }

.toggle-thumb {
  width: 10px; height: 10px;
  background: var(--white);
  border-radius: 50%;
  position: absolute;
  top: 2px; left: 2px;
  transition: all 0.2s;
}

.toggle-track.on .toggle-thumb { left: 16px; background: var(--green); }

.example-list { padding: 4px 8px; }

.example-item {
  padding: 3px 6px;
  cursor: pointer;
  font-size: 10px;
  border-radius: 2px;
}

.example-item:hover { background: rgba(51, 255, 51, 0.1); }

.addr-input {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
  padding: 2px 6px;
  width: 65px;
  outline: none;
}

.addr-input:focus { border-color: var(--green); }

.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--bg-panel);
  border: 1px solid var(--green-dim);
  padding: 16px;
  min-width: 400px;
  max-width: 90vw;
}

.modal textarea {
  width: 100%;
  min-height: 120px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
  padding: 8px;
  resize: vertical;
  outline: none;
}

.footer {
  text-align: center;
  padding: 8px;
  font-size: 9px;
  color: var(--gray);
  border-top: 1px solid var(--green-dim);
}

.footer a { color: var(--cyan); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

.blink-cursor {
  animation: blink 1s step-end infinite;
}

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

.info-card {
  padding: 8px;
  font-size: 10px;
  line-height: 1.5;
}

.info-card .mnemonic { color: var(--amber); font-weight: 700; font-size: 13px; }
.info-card .detail { color: var(--gray); }

@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
    overflow-y: auto;
  }
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--green-dim); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--green); }