@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@300;400;500;600;700&display=swap');

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

:root {
  --bg: #0a0a0e;
  --panel-bg: #0e0e18;
  --panel-border: #1a2a4a;
  --text: #00FF41;
  --text-dim: #007722;
  --text-bright: #44FF77;
  --accent: #00FFFF;
  --red: #FF4444;
  --yellow: #FFFF00;
  --amber: #FFB000;
  --btn-bg: #151528;
  --btn-border: #2a2a5a;
  --input-bg: #0a0a14;
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.4;
  overflow-x: hidden;
  min-height: 100vh;
}

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

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1600px;
  margin: 0 auto;
  padding: 8px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.header-title {
  font-size: 20px;
  font-weight: 700;
  text-shadow: 0 0 10px var(--text), 0 0 20px rgba(0,255,65,0.3);
  letter-spacing: 1px;
}

.chip-icon {
  color: var(--amber);
  text-shadow: 0 0 8px var(--amber);
}

.header-sub {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.status-text { font-weight: 600; font-size: 12px; }
.cycle-counter { color: var(--text-dim); font-size: 12px; }
.error-msg { color: var(--red); font-size: 11px; max-width: 300px; }

/* Panels */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  padding: 6px;
  overflow: hidden;
}

.panel-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
  text-shadow: 0 0 6px rgba(0,255,255,0.3);
  white-space: nowrap;
  letter-spacing: 1px;
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

/* Main Layout */
.main-layout {
  display: grid;
  grid-template-columns: 200px 1fr 220px;
  gap: 8px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

@media (max-width: 900px) {
  .main-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
}

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

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

/* Register Panel */
.register-panel {
  overflow-y: auto;
  font-size: 12px;
}

.reg-section { margin-bottom: 6px; }
.reg-section-title {
  font-size: 10px;
  color: var(--text-dim);
  margin: 4px 0 2px;
  text-align: center;
}

.reg-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 4px;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.15s;
}

.reg-row:hover { background: rgba(0,255,65,0.08); }

.reg-changed {
  animation: regFlash 0.6s ease-out;
}

@keyframes regFlash {
  0% { background: rgba(255,255,0,0.3); }
  100% { background: transparent; }
}

.reg-label {
  color: var(--amber);
  font-weight: 600;
  width: 28px;
}

.reg-val { color: var(--text-bright); font-weight: 500; }
.reg-hi, .reg-lo { color: var(--text-bright); }
.reg-sep { color: var(--text-dim); margin: 0 1px; }

.reg-edit {
  background: var(--input-bg);
  border: 1px solid var(--accent);
  color: var(--text-bright);
  font-family: inherit;
  font-size: 12px;
  width: 50px;
  padding: 1px 3px;
  text-align: right;
}

.phys-addr {
  font-size: 10px;
  color: var(--text-dim);
  text-align: center;
  padding: 2px;
}

/* Flags */
.flags-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.flag-item {
  text-align: center;
  padding: 2px;
  cursor: pointer;
  border: 1px solid #1a1a2e;
  border-radius: 2px;
  transition: all 0.15s;
}

.flag-item:hover { border-color: var(--text-dim); }

.flag-set {
  background: rgba(0,255,65,0.15);
  border-color: var(--text);
}

.flag-name { font-size: 9px; color: var(--amber); }
.flag-val { font-size: 11px; font-weight: 700; }
.flag-set .flag-val { color: var(--text-bright); text-shadow: 0 0 4px var(--text); }

/* Disassembly */
.disasm-panel { flex: 1; min-height: 200px; display: flex; flex-direction: column; }
.disasm-list {
  flex: 1;
  overflow-y: auto;
  font-size: 12px;
}

.disasm-line {
  display: flex;
  align-items: center;
  padding: 1px 4px;
  cursor: pointer;
  white-space: nowrap;
  border-left: 3px solid transparent;
}

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

.disasm-current {
  background: rgba(0,255,255,0.1) !important;
  border-left-color: var(--accent);
}

.disasm-bp { background: rgba(255,68,68,0.1); }
.disasm-bp-dot { color: var(--red); width: 12px; font-size: 10px; }
.disasm-arrow { color: var(--accent); width: 12px; font-weight: bold; }
.disasm-addr { color: var(--text-dim); width: 90px; font-size: 11px; }
.disasm-bytes { color: #555588; width: 100px; font-size: 11px; }
.disasm-mnemonic { color: var(--text-bright); font-weight: 500; }

/* Memory */
.memory-panel { display: flex; flex-direction: column; }

.mem-nav {
  display: flex;
  gap: 4px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.mem-input {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  padding: 3px 6px;
  width: 90px;
}

.mem-view { font-size: 11px; overflow-x: auto; }

.mem-row {
  display: flex;
  gap: 8px;
  padding: 1px 0;
  white-space: nowrap;
}

.mem-addr { color: var(--text-dim); width: 50px; }
.mem-bytes { display: flex; gap: 4px; }
.mem-byte { color: var(--text); }
.mem-read { color: #4488FF; }
.mem-write { color: var(--red); }
.mem-ascii { color: #556655; margin-left: 4px; }

/* Stack */
.stack-panel { min-height: 150px; }
.stack-list { font-size: 12px; }

.stack-entry {
  display: flex;
  gap: 8px;
  padding: 2px 4px;
}

.stack-top {
  background: rgba(0,255,255,0.08);
  border-left: 2px solid var(--accent);
}

.stack-addr { color: var(--text-dim); width: 80px; font-size: 11px; }
.stack-val { color: var(--text-bright); font-weight: 500; }
.stack-sp { color: var(--accent); font-size: 10px; }

/* Console */
.console-panel { min-height: 100px; display: flex; flex-direction: column; }

.console-output {
  flex: 1;
  background: #000;
  color: var(--text);
  padding: 6px;
  font-size: 13px;
  overflow-y: auto;
  border: 1px solid #0a1a0a;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 60px;
  text-shadow: 0 0 4px rgba(0,255,65,0.4);
}

/* Controls */
.controls-bar {
  display: flex;
  gap: 8px;
  padding: 8px 0;
  align-items: flex-start;
  flex-wrap: wrap;
}

.control-buttons {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-ctrl {
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.15s;
  font-weight: 600;
}

.btn-ctrl:hover {
  background: rgba(0,255,65,0.1);
  border-color: var(--text);
  text-shadow: 0 0 6px var(--text);
}

.btn-run { color: var(--accent); border-color: rgba(0,255,255,0.3); }
.btn-run:hover { border-color: var(--accent); }
.btn-reset { color: var(--amber); border-color: rgba(255,176,0,0.3); }
.btn-reset:hover { border-color: var(--amber); }

.btn-sm {
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--text-dim);
  font-family: inherit;
  font-size: 10px;
  padding: 2px 6px;
  cursor: pointer;
}

.btn-sm:hover { color: var(--text); border-color: var(--text-dim); }

.speed-control {
  display: flex;
  align-items: center;
  gap: 6px;
}

.speed-label { color: var(--text-dim); font-size: 11px; }

.speed-slider {
  width: 100px;
  accent-color: var(--text);
}

.speed-val { color: var(--text-dim); font-size: 10px; min-width: 70px; }

/* Loader */
.loader-panel {
  flex: 1;
  min-width: 300px;
}

.loader-row {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 4px;
}

.example-select {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  color: var(--text);
  font-family: inherit;
  font-size: 11px;
  padding: 4px;
  flex: 1;
  max-width: 360px;
}

.hex-input {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-bright);
  font-family: inherit;
  font-size: 12px;
  padding: 6px;
  width: 100%;
  resize: vertical;
}

.hex-input:focus, .mem-input:focus, .reg-edit:focus, .addr-input:focus, .example-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 4px rgba(0,255,255,0.2);
}

.loader-label { color: var(--text-dim); font-size: 11px; }

.addr-input {
  background: var(--input-bg);
  border: 1px solid var(--panel-border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  padding: 3px 6px;
  width: 80px;
}

.btn-load {
  background: rgba(0,255,65,0.1);
  border: 1px solid var(--text);
  color: var(--text-bright);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  cursor: pointer;
}

.btn-load:hover {
  background: rgba(0,255,65,0.2);
  text-shadow: 0 0 6px var(--text);
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 12px;
  font-size: 11px;
}

.app-footer a {
  color: var(--text-dim);
  text-decoration: none;
}

.app-footer a:hover {
  color: var(--text);
  text-shadow: 0 0 6px var(--text);
}

/* Scrollbars */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--panel-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* Option styling */
option { background: var(--panel-bg); color: var(--text); }