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

:root {
  --bg: #0f0f1a;
  --bg2: #1a1a2e;
  --panel: #16162a;
  --border: #2a2a4a;
  --orange: #e8751a;
  --orange-dim: #a35010;
  --green: #33ff33;
  --red: #ff3333;
  --text: #e0dcd0;
  --text-dim: #888;
  --key-bg: #3a3a3a;
  --key-hover: #4a4a4a;
  --key-active: #2a2a2a;
}

body {
  font-family: 'VT323', 'Share Tech Mono', monospace;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 15px;
}

/* HEADER */
#header {
  text-align: center;
  padding: 12px 0 8px;
  border-bottom: 2px solid var(--orange);
  margin-bottom: 15px;
}

.header-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.oric-logo {
  background: var(--orange);
  color: #fff;
  font-size: 28px;
  font-weight: bold;
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 3px;
}

#header h1 {
  font-size: 32px;
  color: var(--text);
  letter-spacing: 2px;
}

.header-chips {
  font-size: 14px;
  color: var(--orange-dim);
  margin-top: 4px;
  letter-spacing: 1px;
}

/* CRT DISPLAY */
#display-section {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.crt-bezel {
  background: linear-gradient(145deg, #2a2520, #1a1510);
  border: 3px solid #3a3530;
  border-radius: 18px;
  padding: 18px 22px 10px;
  box-shadow: 0 0 30px rgba(0,0,0,0.7), inset 0 0 15px rgba(0,0,0,0.4);
  position: relative;
}

.crt-inner {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 0 50px rgba(232, 117, 26, 0.15), inset 0 0 30px rgba(0,0,0,0.6);
  background: #000;
}

#screen {
  display: block;
  width: 720px;
  height: 672px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
}

.scanlines {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0,0,0,0.12) 0px,
    rgba(0,0,0,0.12) 1px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
  border-radius: 10px;
}

.led-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 0 4px;
  font-size: 14px;
}

.led {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid #555;
}

.led-green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.led-red { background: var(--red); box-shadow: 0 0 6px var(--red); }

#speed-display {
  margin-left: auto;
  color: var(--orange);
  font-size: 16px;
}

/* CONTROLS */
#controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 12px;
}

.ctrl-btn {
  font-family: 'VT323', monospace;
  font-size: 16px;
  background: linear-gradient(180deg, #444, #333);
  color: var(--text);
  border: 2px solid #555;
  border-bottom-color: #222;
  border-right-color: #222;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.1s;
  white-space: nowrap;
}

.ctrl-btn:hover { background: linear-gradient(180deg, #555, #444); }
.ctrl-btn:active {
  border-top-color: #222;
  border-left-color: #222;
  border-bottom-color: #555;
  border-right-color: #555;
  transform: translateY(1px);
}
.ctrl-btn:disabled { opacity: 0.4; cursor: default; }
.ctrl-btn.small { font-size: 13px; padding: 3px 8px; }

.file-btn { position: relative; cursor: pointer; }

#file-info {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-dim);
}

.load-addr-row {
  display: flex;
  align-items: center;
  gap: 4px;
}

.load-addr-row input, #mem-addr {
  font-family: 'Share Tech Mono', monospace;
  font-size: 14px;
  width: 50px;
  background: #111;
  color: var(--orange);
  border: 1px solid var(--border);
  padding: 2px 4px;
  text-transform: uppercase;
}

/* DROP ZONE */
#drop-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 15px;
  text-align: center;
  margin-top: 10px;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
  max-width: 720px;
}

#drop-zone:hover, #drop-zone.drag-over {
  border-color: var(--orange);
  background: rgba(232,117,26,0.05);
}

.drop-label { font-size: 16px; color: var(--text-dim); }
.drop-label small { font-size: 13px; }

/* DEBUG TOGGLE */
#debug-toggle-bar {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* PANELS */
.panel-section {
  margin-top: 12px;
  overflow: hidden;
  transition: max-height 0.3s;
}

.panel-section.collapsed {
  max-height: 0 !important;
  margin-top: 0;
  overflow: hidden;
}

/* VIRTUAL KEYBOARD */
#virtual-keyboard {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.kb-row {
  display: flex;
  gap: 3px;
}

.kb-key {
  font-family: 'VT323', monospace;
  font-size: 15px;
  min-width: 38px;
  height: 34px;
  background: linear-gradient(180deg, #4a4a4a, var(--key-bg));
  color: #fff;
  border: 2px solid;
  border-color: #666 #333 #222 #555;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
  transition: all 0.05s;
  user-select: none;
}

.kb-key:hover { background: linear-gradient(180deg, #5a5a5a, var(--key-hover)); }

.kb-key:active, .kb-key.pressed {
  background: var(--key-active);
  border-color: #222 #555 #666 #333;
  transform: translateY(1px);
}

.kb-key.special {
  background: linear-gradient(180deg, var(--orange), var(--orange-dim));
  min-width: 52px;
}

.kb-key.modifier.active {
  background: var(--orange);
  box-shadow: 0 0 8px var(--orange);
}

.kb-key.wide { min-width: 70px; }
.kb-key.space { min-width: 200px; }

/* MATRIX */
#matrix-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
}

#matrix-panel h3 { font-size: 16px; color: var(--orange); margin-bottom: 6px; }

#matrix-info {
  display: flex;
  gap: 15px;
  font-size: 14px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

#matrix-info code {
  color: var(--orange);
  font-family: 'Share Tech Mono', monospace;
}

#matrix-table {
  border-collapse: collapse;
  font-size: 12px;
  width: 100%;
  max-width: 600px;
}

#matrix-table th, #matrix-table td {
  border: 1px solid var(--border);
  padding: 3px 5px;
  text-align: center;
  font-family: 'Share Tech Mono', monospace;
}

#matrix-table th { background: #222; color: var(--orange); font-size: 11px; }
#matrix-table td { background: #111; color: var(--text-dim); }
#matrix-table td.active { background: var(--orange); color: #000; font-weight: bold; }

/* DEBUG PANEL */
#debug-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
}

.debug-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 10px;
  margin-bottom: 10px;
}

.debug-box {
  background: #111;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
}

.debug-box h3 {
  font-size: 14px;
  color: var(--orange);
  margin-bottom: 6px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}

.reg-row {
  font-size: 15px;
  margin: 3px 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.reg-row span { color: var(--text-dim); }
.reg-row code {
  color: var(--green);
  font-family: 'Share Tech Mono', monospace;
  font-size: 15px;
}

.flag {
  display: inline-block;
  width: 20px;
  text-align: center;
  font-size: 13px;
  padding: 1px;
  border-radius: 2px;
  background: #333;
  color: #666;
  font-family: 'Share Tech Mono', monospace;
}

.flag.lit { background: var(--orange); color: #000; }
.flag.dim { opacity: 0.3; }

/* Memory dump */
.mem-controls {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

#mem-dump {
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px;
  color: var(--green);
  background: #0a0a0a;
  padding: 6px;
  border-radius: 4px;
  overflow-x: auto;
  line-height: 1.5;
  max-height: 300px;
  overflow-y: auto;
}

/* VIA/AY regs */
#via-regs, #ay-regs {
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px;
  color: var(--text);
  line-height: 1.6;
}

#ula-info {
  font-size: 14px;
  color: var(--text);
}

/* FOOTER */
footer {
  text-align: center;
  padding: 15px;
  margin-top: 20px;
  border-top: 1px solid var(--border);
}

footer a { color: var(--orange); text-decoration: none; font-size: 14px; }
footer a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 800px) {
  #screen { width: 480px; height: 448px; }
  .crt-bezel { padding: 10px 12px 8px; }
  .kb-key { min-width: 28px; height: 28px; font-size: 12px; }
  .kb-key.space { min-width: 120px; }
}

@media (max-width: 520px) {
  #screen { width: 320px; height: 299px; }
  .kb-key { min-width: 22px; height: 24px; font-size: 10px; padding: 0 2px; }
  .kb-key.wide { min-width: 44px; }
  .kb-key.space { min-width: 80px; }
}