@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Orbitron:wght@400;600;800&display=swap');

:root {
  --bg:           #070d09;
  --panel:        #0b1510;
  --panel2:       #0e1c13;
  --border:       #1c4228;
  --glow:         rgba(0, 255, 80, 0.07);
  --scan:         rgba(0,0,0,0.13);

  --text:         #6ddb9a;
  --text-dim:     #2d5a3a;
  --text-bright:  #c0ffda;
  --text-head:    #00ff70;

  --amber:        #ffc400;
  --amber-dim:    #7a5c00;
  --amber-glow:   rgba(255,180,0,0.18);

  --purple:       #9944ee;
  --purple-dim:   rgba(140,60,220,0.18);

  --blue:         #2277ff;
  --blue-bright:  #55aaff;
  --blue-dim:     rgba(30,100,255,0.18);

  --green:        #00dd66;
  --green-bright: #44ffaa;
  --green-dim:    rgba(0,200,100,0.18);

  --orange:       #ff5500;
  --orange-bright:#ff8844;
  --orange-dim:   rgba(255,80,0,0.18);

  --radius:       6px;
  --mono:         'Share Tech Mono', monospace;
  --head:         'Orbitron', sans-serif;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  overflow: hidden;
}

/* Scanline overlay */
body::after {
  content: '';
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    var(--scan) 3px,
    var(--scan) 4px
  );
}

/* ── App shell ───────────────────────────────── */
.app {
  display: grid;
  grid-template-rows: 52px 1fr;
  height: 100vh;
  padding: 8px;
  gap: 8px;
}

/* ── Header ──────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 0 18px rgba(0,255,80,0.06);
}

.hdr-title {
  font-family: var(--head);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--text-head);
  text-shadow: 0 0 12px rgba(0,255,100,0.5);
}

.hdr-sub {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

.hdr-status {
  font-size: 10px;
  color: var(--text-dim);
  max-width: 55%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: right;
}

/* ── Main two-column grid ────────────────────── */
.main-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 8px;
  min-height: 0;
}

/* ── Columns ─────────────────────────────────── */
.left-col,
.right-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
  overflow: hidden;
}

/* ── Panels ──────────────────────────────────── */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  box-shadow: inset 0 0 24px var(--glow);
  flex-shrink: 0;
}

.panel.grow {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-label {
  font-family: var(--head);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

/* ── Controls panel ──────────────────────────── */
.ctrl-block {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
}

.prog-select {
  font-family: var(--mono);
  font-size: 12px;
  padding: 5px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text-bright);
  cursor: pointer;
  flex: 1;
  min-width: 120px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%232d5a3a'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 24px;
}

.prog-select:focus { outline: 1px solid var(--border); }

.btn-row {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--head);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 5px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  cursor: pointer;
  transition: all 0.1s;
  white-space: nowrap;
}

.btn:hover { background: #142018; border-color: var(--text-dim); color: var(--text-bright); }
.btn:disabled { opacity: 0.3; cursor: default; }
.btn:disabled:hover { background: var(--panel2); border-color: var(--border); color: var(--text); }

.btn.active-btn {
  background: var(--amber-glow);
  color: var(--amber);
  border-color: var(--amber-dim);
  text-shadow: 0 0 8px rgba(255,196,0,0.5);
  box-shadow: 0 0 10px rgba(255,196,0,0.15);
}

.btn.danger-btn { color: var(--orange); border-color: var(--orange-dim); }
.btn.danger-btn:hover { background: var(--orange-dim); }

.btn.primary-btn {
  background: rgba(0,200,80,0.15);
  color: var(--text-head);
  border-color: rgba(0,200,80,0.4);
}
.btn.primary-btn:hover { background: rgba(0,200,80,0.25); }

.speed-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 4px;
}

.speed-row span { letter-spacing: 0.05em; }

input[type=range] {
  accent-color: var(--text-head);
  cursor: pointer;
  height: 4px;
}

/* ── Status bar ──────────────────────────────── */
.status-bar {
  font-size: 10px;
  color: var(--text-dim);
  min-height: 16px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── LEDs ────────────────────────────────────── */
.bit-labels {
  display: flex;
  gap: 5px;
  margin-bottom: 4px;
}

.bit-label {
  font-size: 9px;
  color: var(--text-dim);
  text-align: center;
  width: 22px;
  flex-shrink: 0;
  letter-spacing: 0.1em;
}

.led-row {
  display: flex;
  gap: 5px;
  align-items: center;
}

.led {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid;
  flex-shrink: 0;
  transition: background 0.05s, box-shadow 0.05s;
}

.led.off {
  background: #0c1c10;
  border-color: #1a3a22;
}

.led.on {
  background: #f0a800;
  border-color: #c07800;
  box-shadow: 0 0 8px rgba(240,168,0,0.7), 0 0 18px rgba(240,168,0,0.3);
}

.led.on.blue {
  background: var(--blue-bright);
  border-color: var(--blue);
  box-shadow: 0 0 8px rgba(80,160,255,0.7), 0 0 18px rgba(80,160,255,0.3);
}

.led.on.red {
  background: #ff4444;
  border-color: #cc2222;
  box-shadow: 0 0 8px rgba(255,60,60,0.7), 0 0 18px rgba(255,60,60,0.3);
}

.led.on.green {
  background: var(--green-bright);
  border-color: var(--green);
  box-shadow: 0 0 8px rgba(60,255,160,0.7), 0 0 18px rgba(60,255,160,0.3);
}

.hex-val {
  font-size: 12px;
  color: var(--text);
  margin-left: 8px;
  letter-spacing: 0.06em;
}

.out-trace {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 6px;
  height: 14px;
  overflow: hidden;
  white-space: nowrap;
  letter-spacing: 0.08em;
}

/* ── Switches ────────────────────────────────── */
.switch-row {
  display: flex;
  gap: 5px;
  align-items: center;
}

.sw {
  width: 22px;
  height: 36px;
  border-radius: 3px;
  border: 1px solid #1a3a22;
  background: #0c1c10;
  cursor: pointer;
  position: relative;
  transition: background 0.1s, box-shadow 0.1s;
}

.sw.on {
  background: #003a1c;
  border-color: var(--green);
  box-shadow: 0 0 8px rgba(0,200,100,0.4);
}

.sw-knob {
  width: 14px;
  height: 11px;
  border-radius: 2px;
  background: #2d5a3a;
  position: absolute;
  left: 3px;
  transition: bottom 0.1s, background 0.1s;
}

.sw.off .sw-knob { bottom: 3px; background: #1a3a22; }
.sw.on .sw-knob  { bottom: 20px; background: var(--green-bright); }

/* ── Registers ───────────────────────────────── */
.reg-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-bottom: 8px;
}

.reg-box {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 8px;
  text-align: center;
}

.reg-box.reg-a { background: var(--blue-dim); border-color: rgba(30,100,255,0.3); }
.reg-box.reg-b { background: var(--green-dim); border-color: rgba(0,200,100,0.3); }
.reg-box.reg-c { background: var(--orange-dim); border-color: rgba(255,80,0,0.3); }
.reg-box.reg-pc { background: var(--purple-dim); border-color: rgba(140,60,220,0.3); }

.reg-name {
  font-family: var(--head);
  font-size: 8px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.reg-box.reg-a  .reg-name { color: var(--blue-bright); }
.reg-box.reg-b  .reg-name { color: var(--green-bright); }
.reg-box.reg-c  .reg-name { color: var(--orange-bright); }
.reg-box.reg-pc .reg-name { color: #cc88ff; }

.reg-val {
  font-size: 17px;
  font-weight: 400;
  color: var(--text-bright);
  letter-spacing: 0.06em;
}

.reg-box.reg-a  .reg-val { color: var(--blue-bright); }
.reg-box.reg-b  .reg-val { color: var(--green-bright); }
.reg-box.reg-c  .reg-val { color: var(--orange-bright); }
.reg-box.reg-pc .reg-val { color: #cc88ff; }

.reg-sub {
  font-size: 9px;
  color: var(--text-dim);
  margin-top: 2px;
  letter-spacing: 0.05em;
}

/* ── Flags ───────────────────────────────────── */
.flag-row {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}

.flag {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 10px;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  transition: all 0.1s;
}

.flag.active {
  background: var(--amber-glow);
  color: var(--amber);
  border-color: var(--amber-dim);
  box-shadow: 0 0 8px rgba(255,196,0,0.15);
}

/* ── Instruction decode ──────────────────────── */
.instr-decode {
  font-size: 11px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
  color: var(--text);
  line-height: 1.7;
  letter-spacing: 0.04em;
}

.kw { color: var(--text-head); font-weight: bold; }
.ka { color: var(--blue-bright); font-weight: bold; }
.kb { color: var(--green-bright); font-weight: bold; }
.kc { color: var(--orange-bright); font-weight: bold; }

/* ── Assembly listing ────────────────────────── */
.asm-list {
  font-size: 11px;
  line-height: 1.9;
  flex: 1;
  overflow-y: auto;
  min-height: 0;
  padding: 2px 0;
}

.asm-list::-webkit-scrollbar { width: 4px; }
.asm-list::-webkit-scrollbar-track { background: var(--bg); }
.asm-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.asm-row {
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--text-dim);
  display: flex;
  gap: 10px;
  transition: background 0.05s;
}

.asm-row:hover { background: #0f1c14; }

.asm-row.cur {
  background: rgba(140,60,220,0.15);
  color: #cc88ff;
  border-left: 2px solid #9944ee;
  padding-left: 4px;
}

.asm-addr { min-width: 22px; color: #1a4a2a; }
.asm-row.cur .asm-addr { color: #9944ee; }
.asm-comment { color: #1a4a2a; font-size: 10px; }
.asm-row.cur .asm-comment { color: #5a3a8a; }

.section-title {
  font-family: var(--head);
  font-size: 8px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin: 8px 0 5px;
}

/* ── Memory grid ─────────────────────────────── */
.mem-grid {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 2px;
  font-size: 10px;
  flex: 1;
}

.mc {
  padding: 3px 1px;
  text-align: center;
  border-radius: 2px;
  color: var(--text-dim);
  background: var(--panel2);
  cursor: pointer;
  transition: background 0.07s, color 0.07s;
  letter-spacing: 0;
  font-size: 14px;
}

.mc:hover { background: #142018; color: var(--text); }

.mc.pc-cur {
  background: rgba(140,60,220,0.35);
  color: #cc88ff;
  font-weight: bold;
  box-shadow: 0 0 5px rgba(140,60,220,0.3);
}

.mc.pc-a {
  background: var(--blue-dim);
  color: var(--blue-bright);
  font-weight: bold;
}

.mc.pc-b {
  background: var(--green-dim);
  color: var(--green-bright);
  font-weight: bold;
}

.mc.pc-c {
  background: var(--orange-dim);
  color: var(--orange-bright);
  font-weight: bold;
}

.mem-legend {
  display: flex;
  gap: 12px;
  font-size: 9px;
  color: var(--text-dim);
  margin-bottom: 6px;
  letter-spacing: 0.06em;
  flex-wrap: wrap;
}

.lsw {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 3px;
}

.mem-inspect {
  margin-top: 5px;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  min-height: 14px;
}

/* ── Modal ───────────────────────────────────── */
#prog-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,5,2,0.75);
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 28px 12px;
  overflow-y: auto;
  backdrop-filter: blur(3px);
}

#prog-modal.open { display: flex; }

.modal-card {
  background: #0c1610;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
  width: 660px;
  max-width: 100%;
  box-shadow: 0 0 60px rgba(0,255,80,0.08), 0 16px 48px rgba(0,0,0,0.6);
}

.modal-title {
  font-family: var(--head);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  color: var(--text-head);
}

.modal-section {
  font-family: var(--head);
  font-size: 8px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.modal-sep { margin-top: 16px; }

.edit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.edit-table th {
  font-family: var(--head);
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-align: left;
  padding: 2px 4px;
  border-bottom: 1px solid var(--border);
}

.edit-table td { padding: 3px 4px; vertical-align: middle; }

.hex-inp {
  width: 32px;
  padding: 3px 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 12px;
  text-align: center;
  text-transform: uppercase;
  background: var(--panel2);
  color: var(--text-bright);
}

.hex-inp:focus { outline: none; border-color: var(--text-dim); }
.hex-inp.err { border-color: var(--orange); background: rgba(255,80,0,0.1); }

.addr-inp {
  width: 36px;
  padding: 3px 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 12px;
  text-align: center;
  text-transform: uppercase;
  background: var(--panel2);
  color: var(--text-bright);
}

.addr-inp:focus { outline: none; border-color: var(--text-dim); }
.addr-inp.err { border-color: var(--orange); background: rgba(255,80,0,0.1); }

.edit-addr {
  font-size: 10px;
  color: var(--text-dim);
  width: 22px;
  display: inline-block;
  text-align: right;
  padding-right: 6px;
}

.effect-lbl {
  font-size: 10px;
  color: var(--text-dim);
  padding-left: 6px;
}

.del-btn {
  font-size: 12px;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
}

.del-btn:hover { background: var(--orange-dim); color: var(--orange); border-color: var(--orange); }

.add-row-btn {
  font-family: var(--head);
  font-size: 9px;
  letter-spacing: 0.1em;
  padding: 5px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  margin-top: 6px;
}

.add-row-btn:hover { background: #0f1c14; color: var(--text); }

.modal-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.name-inp {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-bright);
  background: var(--panel2);
}

.name-inp:focus { outline: none; border-color: var(--text-dim); }

.error-msg {
  font-size: 11px;
  color: var(--orange);
  margin-top: 6px;
  display: none;
}

/* ── Scrollbars ──────────────────────────────── */
*::-webkit-scrollbar { width: 4px; height: 4px; }
*::-webkit-scrollbar-track { background: var(--bg); }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── iPad / tablet ───────────────────────────── */
@media (max-width: 900px) {
  .main-grid {
    grid-template-columns: 280px 1fr;
  }
}

@media (max-width: 700px) {
  html, body { overflow: auto; }
  .app { height: auto; overflow: auto; }
  .main-grid { grid-template-columns: 1fr; }
  .left-col, .right-col { overflow: visible; }
  .panel.grow { min-height: 220px; }
}