/* ================================================================
   Leap V2 IDE — layout stylesheet
   Dark-only; phosphor-era accent palette.
   ================================================================ */

/* Must precede all rules */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg:         #0d1117;
  --bg-panel:   #13171f;
  --bg-surface: #1c2128;
  --bg-hover:   #22292f;
  --bg-active:  #2d333b;
  --border:     #2d333b;
  --border-hi:  #444c56;

  --fg:         #cdd9e5;
  --fg-muted:   #768390;
  --fg-dim:     #3d444c;

  --green:      #347d39;
  --green-hi:   #4caf50;
  --red-bg:     #6e0f14;
  --red-fg:     #f78166;
  --amber-fg:   #e3b341;
  --blue-fg:    #79c0ff;

  --font-ui:   'Inter', system-ui, sans-serif;
  --font-code: 'JetBrains Mono', 'Cascadia Code', monospace;

  color-scheme: dark;
}


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

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

/* ── IDE shell ───────────────────────────────────────────────── */
.ide-root {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* ── Toolbar ─────────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: 48px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  user-select: none;
}

.toolbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
}
.logo-icon { font-size: 18px; color: var(--green-hi); }
.logo-tag  {
  background: var(--green);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 2px 5px;
  border-radius: 3px;
  text-transform: uppercase;
}

.toolbar-file {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--fg-muted);
  white-space: nowrap;
}
#filename-display { overflow: hidden; text-overflow: ellipsis; cursor: pointer; }
#filename-display:hover { color: var(--fg); }
#dirty-mark { color: var(--amber-fg); margin-left: -6px; }

.toolbar-actions {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-shrink: 0;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 5px;
  border: 1px solid var(--border-hi);
  background: var(--bg-surface);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.1s;
  white-space: nowrap;
}
.btn:hover    { background: var(--bg-hover); }
.btn:active   { background: var(--bg-active); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn:disabled:hover { background: var(--bg-surface); }

.btn-run  { background: var(--green);  border-color: var(--green-hi); color: #fff; }
.btn-run:hover  { background: #3d8b42; }
.btn-stop { background: var(--red-bg); border-color: #993333; color: var(--red-fg); }
.btn-stop:hover { background: #7a1216; }

/* Status chip */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--fg-muted);
}
.status-chip.run   { background: rgba(52,125,57,.2);  color: #8ddb8c; border-color: rgba(76,175,80,.3); }
.status-chip.error { background: rgba(110,15,20,.3);  color: var(--red-fg); border-color: #993333; }
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.status-chip.run .status-dot { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

/* ── Workspace ───────────────────────────────────────────────── */
.workspace {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ── Generic panel ───────────────────────────────────────────── */
.panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  border-right: 1px solid var(--border);
}
.panel:last-child { border-right: none; }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  height: 30px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--fg-muted);
  user-select: none;
}
.panel-header-btns { display: flex; gap: 4px; }
.phbtn {
  padding: 2px 7px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg-muted);
  font-family: var(--font-ui);
  font-size: 10px;
  cursor: pointer;
}
.phbtn:hover { background: var(--bg-hover); color: var(--fg); }

/* ── Editor panel ────────────────────────────────────────────── */
.panel-editor { flex: 1 1 0; min-width: 300px; }   /* takes what the emulator (zoom) and debugger leave */

.editor-mount {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.editor-mount .cm-editor { height: 100%; }
.editor-mount .cm-scroller { overflow: auto; }

/* ── Emulator panel ──────────────────────────────────────────── */
.panel-emulator { flex: 0 0 28%; background: var(--bg); }

.emulator-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px 12px;
  gap: 12px;
  overflow: auto;
}

.bezel {
  background: #1a1a20;
  border: 3px solid #2a2a32;
  border-radius: 5px;
  padding: 8px;
  box-shadow: 0 0 0 1px #0d0d12, 0 6px 24px rgba(0,0,0,.7),
              inset 0 0 14px rgba(0,0,0,.4);
  /* TSRun's resizeScreen() fits the canvas to this content box, so the box
     itself carries the 4:3 shape (padding 2×8 + border 2×3 = 22px). */
  /* Sized by ide.js (applyZoom) to a whole multiple of the 320x240 frame in
     device pixels; TSRun's resizeScreen() then fits the canvas exactly. */
  box-sizing: content-box;
  width: 320px;
  height: 240px;
  flex-shrink: 0;
  cursor: text;
}
.bezel:focus { outline: none; border-color: var(--blue-fg); }
.bezel canvas {
  display: block;
  background: #000;
}

.emu-meta {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
  font-size: 11px;
  color: var(--fg-muted);
  font-family: var(--font-code);
}

/* ── Debugger panel ──────────────────────────────────────────── */
.panel-debugger {
  flex: 0 1 340px;
  min-width: 240px;
  overflow-y: auto;
  background: var(--bg);
}

.dsec { border-bottom: 1px solid var(--border); }

.dsec-hdr {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  background: var(--bg-panel);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--fg-muted);
  cursor: pointer;
  user-select: none;
  gap: 4px;
}
.dsec-hdr:hover { color: var(--fg); }
.dsec-arrow { font-size: 8px; margin-left: auto; }

/* Register grid */
.reg-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 8px;
  border-radius: 4px;
  overflow: hidden;
  font-variant-numeric: tabular-nums;
}
.rc {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 8px;
  background: var(--bg-panel);
  font-family: var(--font-code);
  font-size: 11px;
}
.rn { color: var(--fg-muted); font-weight: 600; font-size: 10px; letter-spacing: .04em; }
.rv { color: var(--blue-fg); }
.rv.changed { color: var(--amber-fg); }

/* Flags row */
.flags-row {
  display: flex;
  gap: 8px;
  padding: 5px 8px 8px;
  font-family: var(--font-code);
  font-size: 10px;
  margin: 0 8px 4px;
  background: var(--bg-surface);
  border-radius: 4px;
}
.flag     { color: var(--fg-dim); letter-spacing: .03em; }
.flag.set { color: var(--amber-fg); font-weight: 600; }

/* Variables table */
.var-tbl {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-code);
  font-size: 11px;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.var-tbl th {
  text-align: left;
  padding: 5px 12px;
  color: var(--fg-dim);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.var-tbl td { padding: 4px 12px; border-bottom: 1px solid rgba(45,51,59,.5); }
.var-tbl td:first-child  { color: #dcbdfb; }
.var-tbl td:nth-child(2) { color: var(--fg-muted); font-size: 10px; }
.var-tbl td:last-child   { color: var(--blue-fg); text-align: right; }
.var-tbl tr:hover td     { background: var(--bg-hover); }

/* Breakpoints */
.bp-list { padding: 4px 0 8px; }
.bpitem {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  cursor: pointer;
}
.bpitem:hover { background: var(--bg-hover); }
.bpind { width:8px; height:8px; border-radius:50%; background:var(--red-fg); flex-shrink:0; }
.bpitem.active .bpind { background:var(--amber-fg); box-shadow:0 0 5px rgba(227,179,65,.5); }
.bp-file { font-family: var(--font-code); font-size: 11px; flex: 1; }
.bp-del { border:none; background:none; cursor:pointer; color:var(--fg-dim); font-size:12px; }
.bp-del:hover { color: var(--red-fg); }

/* Call stack */
.callstack { padding: 4px 0 8px; font-family: var(--font-code); font-size: 11px; }
.csframe { padding: 4px 12px; display: flex; gap: 10px; cursor: pointer; }
.csframe:hover { background: var(--bg-hover); }
.csframe.current { background: rgba(227,179,65,.06); }
.csfn { color: #dcbdfb; }
.csline { color: var(--fg-muted); font-size: 10px; }

/* Memory hex dump */
.mem-hex {
  font-family: var(--font-code);
  font-size: 10px;
  padding: 6px 8px;
  overflow-x: auto;
  line-height: 1.7;
}
.hex-dump { white-space: pre; }
.hex-addr { color: var(--fg-muted); margin-right: 6px; }
.hex-byte { color: var(--blue-fg); margin-right: 2px; }
.hex-char { color: var(--fg-dim); }

/* Generic */
.no-data {
  padding: 8px 12px;
  font-size: 11px;
  color: var(--fg-dim);
  font-family: var(--font-code);
}

/* ── Status bar ──────────────────────────────────────────────── */
.statusbar {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 16px;
  height: 24px;
  background: var(--green);
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 500;
  color: rgba(255,255,255,.9);
  user-select: none;
}
.statusbar > span { padding: 0 8px; }
.sb-sep { color: rgba(255,255,255,.3); padding: 0 2px; }
.sb-right { margin-left: auto; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 700px) {
  html, body { overflow: auto; }
  .ide-root { height: auto; min-height: 100%; }
  .workspace { flex-direction: column; overflow-y: auto; }
  .panel { flex: none; border-right: none; border-bottom: 1px solid var(--border); }
  .panel-editor   { height: 45vh; }
  .panel-emulator { height: auto; }
  .panel-debugger { min-height: 300px; }
  .toolbar-actions .btn span:not([class]) { display: none; }
}

/* ── Debugger additions (Phase 3) ─────────────────────────────── */
#mem-addr {
  width: 52px;
  margin-left: 6px;
  padding: 1px 4px;
  font-family: var(--font-code);
  font-size: 11px;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border-hi);
  border-radius: 3px;
}
.var-tbl td.var-val { word-break: break-all; }
.csframe, .bpitem { cursor: pointer; }

/* Display zoom (− 2× +) */
.zoom-label { font-family: var(--font-code); font-size: 11px; color: var(--fg-muted); min-width: 22px; text-align: center; }

/* ── Help overlay (src/help.js) ───────────────────────────────── */
.help-overlay {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: rgba(1, 4, 9, 0.6);
}
.help-overlay[hidden] { display: none; }
.help-box {
  width: min(920px, calc(100vw - 32px)); height: min(620px, calc(100vh - 32px));
  display: flex; flex-direction: column;
  background: var(--bg-panel); border: 1px solid var(--border-hi); border-radius: 8px;
  box-shadow: 0 12px 40px rgba(0,0,0,.6); overflow: hidden;
}
.help-head { display: flex; align-items: center; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.help-tab, .help-close {
  background: none; border: 1px solid transparent; border-radius: 4px;
  color: var(--fg-muted); font: 12px var(--font-ui); padding: 4px 10px; cursor: pointer;
}
.help-tab.active { color: var(--fg); border-color: var(--border-hi); background: var(--bg-surface); }
.help-tab:hover, .help-close:hover { color: var(--fg); }
.help-spacer { flex: 1; }
.help-keywords { flex: 1; display: flex; min-height: 0; }
.help-keywords[hidden], .help-keys[hidden] { display: none; }
.help-side { width: 230px; display: flex; flex-direction: column; border-right: 1px solid var(--border); }
.help-search {
  margin: 10px; padding: 6px 8px; font: 12px var(--font-code); color: var(--fg);
  background: var(--bg); border: 1px solid var(--border-hi); border-radius: 4px;
}
.help-list { flex: 1; overflow-y: auto; padding: 0 6px 10px; }
.help-group[hidden] { display: none; }
.help-group-title { font: 10px var(--font-ui); text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); padding: 10px 6px 4px; }
.help-item {
  display: block; width: 100%; text-align: left; background: none; border: none; border-radius: 3px;
  color: var(--amber-fg); font: 12px var(--font-code); padding: 3px 6px; cursor: pointer;
}
.help-item[hidden] { display: none; }
.help-item:hover { background: var(--bg-hover); }
.help-item.active { background: var(--bg-active); color: var(--fg); }
.help-detail { flex: 1; overflow-y: auto; padding: 16px 20px; }
.help-name { margin: 0 0 10px; font: 600 18px var(--font-code); color: var(--fg); }
.help-form { display: block; font: 13px var(--font-code); color: var(--amber-fg); margin: 2px 0; white-space: pre-wrap; }
.help-kind { margin: 8px 0 12px; font: 10px var(--font-ui); text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); }
.help-desc { margin: 0 0 12px; font: 13px/1.55 var(--font-ui); color: var(--fg); }
.help-example { margin: 0 0 14px; padding: 10px 12px; background: var(--bg); border-radius: 4px; font: 12px var(--font-code); color: var(--fg); }
.help-link { font: 12px var(--font-ui); color: var(--blue-fg); }
.help-keys { flex: 1; overflow-y: auto; padding: 8px 24px 20px; font: 13px/1.55 var(--font-ui); color: var(--fg); }
.help-keys h3 { font: 600 12px var(--font-ui); text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); margin: 18px 0 8px; }
.help-shortcuts td { padding: 3px 14px 3px 0; vertical-align: top; }
.help-shortcuts kbd {
  font: 11px var(--font-code); padding: 1px 6px; border: 1px solid var(--border-hi);
  border-bottom-width: 2px; border-radius: 4px; background: var(--bg-surface); white-space: nowrap;
}
.help-tips { margin: 0; padding-left: 18px; }
.help-tips li { margin-bottom: 6px; }

/* ── Right-panel tabs: Debugger | Symbols | UDG | Draw (Phase 7) ─ */
.panel-tabs { display: flex; gap: 2px; height: 100%; }
.panel-tab {
  background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--fg-muted); font: 600 10px var(--font-ui); text-transform: uppercase; letter-spacing: .06em;
  padding: 0 8px; cursor: pointer;
}
.panel-tab:hover { color: var(--fg); }
.panel-tab.active { color: var(--fg); border-bottom-color: var(--amber-fg); }
.tab-body[hidden] { display: none; }
.tool-body { padding: 10px 12px; font: 12px var(--font-ui); color: var(--fg); }
.tool-body .tool-note { color: var(--fg-muted); font-size: 11px; line-height: 1.45; margin: 0 0 10px; }
.tool-body button.tool-btn {
  font: 11px var(--font-ui); color: var(--fg); background: var(--bg-surface);
  border: 1px solid var(--border-hi); border-radius: 4px; padding: 3px 8px; cursor: pointer;
}
.tool-body button.tool-btn:hover { background: var(--bg-hover); }
.tool-body button.tool-btn:disabled { opacity: .45; cursor: default; }

/* ── Draw tool (src/tools/draw.js) ── */
.draw-stage { position: relative; width: 258px; height: 194px; border: 1px solid var(--border-hi); background: #cdcdcd; margin-bottom: 6px; }
.draw-canvas { position: absolute; left: 0; top: 0; width: 256px; height: 192px; image-rendering: pixelated; }
.draw-overlay { cursor: crosshair; outline: none; }
.draw-stage:focus-within { border-color: var(--blue-fg); }
.draw-readout { font: 11px var(--font-code); color: var(--amber-fg); height: 16px; }
.draw-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 8px; }
.draw-code {
  min-height: 48px; max-height: 140px; overflow: auto; margin: 0 0 8px; padding: 6px 8px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
  font: 11px/1.5 var(--font-code); color: var(--fg);
}

/* ── Symbols tool (src/tools/symbols.js) ── */
.sym-filter {
  width: 100%; box-sizing: border-box; margin-bottom: 8px; padding: 5px 8px;
  font: 12px var(--font-code); color: var(--fg); background: var(--bg);
  border: 1px solid var(--border-hi); border-radius: 4px;
}
.sym-group { font: 600 10px var(--font-ui); text-transform: uppercase; letter-spacing: .06em; color: var(--fg-muted); margin: 10px 0 4px; }
.sym-row {
  display: flex; justify-content: space-between; gap: 8px; width: 100%;
  background: none; border: none; border-radius: 3px; padding: 3px 6px; cursor: pointer; text-align: left;
}
.sym-row:hover { background: var(--bg-hover); }
.sym-name { font: 12px var(--font-code); color: #dcbdfb; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sym-line { font: 11px var(--font-code); color: var(--fg-muted); white-space: nowrap; }

/* ── UDG tool (src/tools/udg.js) ── */
.udg-thumbs { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-bottom: 10px; }
.udg-thumb {
  display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 3px 0;
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px; cursor: pointer;
}
.udg-thumb canvas { image-rendering: pixelated; }
.udg-thumb.active { border-color: var(--amber-fg); }
.udg-code { font: 9px var(--font-code); color: var(--fg-muted); }
.udg-title { font: 11px var(--font-code); color: var(--fg-muted); margin: 4px 0 6px; }
.udg-grid { display: block; width: 176px; height: 176px; border: 1px solid var(--border-hi); cursor: crosshair; touch-action: none; }
.udg-buttons { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }