/* ============================================================
   Run01 — Premium Monochrome Glassmorphic Theme  (v2)
   Full design system: Black / White / Gray palette.
   New in v2: language tabs, init overlay, plot/chart output.
   ============================================================ */

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

:root {
  /* ── Palette ─────────────────────── */
  --bg:                  #050505;
  --glass-bg:            rgba(255,255,255,0.02);
  --glass-bg-hover:      rgba(255,255,255,0.05);
  --glass-bg-active:     rgba(255,255,255,0.08);
  --glass-border:        rgba(255,255,255,0.07);
  --glass-border-hover:  rgba(255,255,255,0.15);
  --glass-border-focus:  rgba(255,255,255,0.25);

  --text:                #F5F5F7;
  --text-muted:          #8E8E93;
  --text-dim:            #48484A;

  --white:               #FFFFFF;
  --black:               #000000;

  /* ── Typography ─────────────────── */
  --font-ui:   'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-logo: 'Pixelify Sans', sans-serif;

  /* ── Layout ─────────────────────── */
  --nav-h:    56px;
  --radius:   12px;
  --radius-sm: 6px;
}

/* ── LIGHT THEME ────────────────────────────────────────── */
[data-theme="light"] {
  --bg:                  #F2F2F7;
  --glass-bg:            rgba(255,255,255,0.75);
  --glass-bg-hover:      rgba(255,255,255,0.88);
  --glass-bg-active:     rgba(255,255,255,1);
  --glass-border:        rgba(0,0,0,0.08);
  --glass-border-hover:  rgba(0,0,0,0.16);
  --glass-border-focus:  rgba(0,0,0,0.30);

  --text:                #1D1D1F;
  --text-muted:          #6E6E73;
  --text-dim:            #A1A1A6;

  --white:               #000000;
  --black:               #FFFFFF;
}

[data-theme="light"] body::before {
  background: radial-gradient(circle, rgba(0,0,0,0.02) 0%, transparent 70%);
}
[data-theme="light"] body::after {
  background: radial-gradient(circle, rgba(0,0,0,0.015) 0%, transparent 70%);
}
[data-theme="light"] .nav {
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}
[data-theme="light"] .workspace {
  box-shadow: 0 8px 40px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
}
[data-theme="light"] .nav-brand {
  color: #1D1D1F;
}
[data-theme="light"] .btn-run {
  background: #000000;
  color: #FFFFFF;
}
[data-theme="light"] .status-dot.ready,
[data-theme="light"] .status-dot.running {
  background: #1D1D1F;
  box-shadow: 0 0 6px rgba(0,0,0,0.35);
}
[data-theme="light"] .out-line {
  color: #1D1D1F;
}
[data-theme="light"] .init-overlay {
  background: #F2F2F7;
}
[data-theme="light"] .init-logo {
  color: #1D1D1F;
}
[data-theme="light"] .init-card {
  background: rgba(0,0,0,0.025);
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 24px 80px rgba(0,0,0,0.1);
}
[data-theme="light"] .init-progress-track {
  background: rgba(0,0,0,0.06);
}
[data-theme="light"] .init-progress-fill {
  background: linear-gradient(90deg, rgba(0,0,0,0.2) 0%, #000 50%, rgba(0,0,0,0.2) 100%);
}
[data-theme="light"] .init-pill {
  background: rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.05);
}
[data-theme="light"] .init-pill.loaded {
  background: rgba(0,0,0,0.07);
  border-color: rgba(0,0,0,0.18);
  box-shadow: 0 0 8px rgba(0,0,0,0.06);
}
[data-theme="light"] .out-plot-wrap {
  background: #f5f5f7;
}
[data-theme="light"] .out-plotly-wrap {
  background: #ffffff;
}
[data-theme="light"] .btn-run kbd {
  background: rgba(255,255,255,0.2);
  color: #FFFFFF;
  border: 1px solid rgba(255,255,255,0.3);
}
[data-theme="light"] .welcome-kbd {
  background: rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.15);
}

/* ── BASE ───────────────────────────────────────────────── */
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  transition: background 0.35s ease, color 0.35s ease;
  font-family: var(--font-ui);
  font-size: 14px;
  overflow: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ambient glow — top-left */
body::before {
  content: '';
  position: fixed;
  top: -20%;  left: -15%;
  width: 55%;  height: 55%;
  background: radial-gradient(circle, rgba(255,255,255,0.025) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
/* Ambient glow — bottom-right */
body::after {
  content: '';
  position: fixed;
  bottom: -20%;  right: -15%;
  width: 55%;  height: 55%;
  background: radial-gradient(circle, rgba(255,255,255,0.018) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── NAV ────────────────────────────────────────────────── */
.nav {
  height: var(--nav-h);
  margin: 14px 14px 7px;
  padding: 0 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(24px) saturate(130%);
  -webkit-backdrop-filter: blur(24px) saturate(130%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 18px;
  position: relative;
  z-index: 20;
  box-shadow: 0 4px 32px rgba(0,0,0,0.45);
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

/* ── LOGO — Pixelify Sans only, always ──────────────────── */
.nav-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  user-select: none;
  font-family: 'Pixelify Sans', sans-serif !important;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
}

/* ── NAV STATUS ─────────────────────────────────────────── */
.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--glass-border);
  padding: 4px 10px;
  border-radius: 20px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.status-dot.loading {
  background: transparent;
  border: 1.5px solid var(--text-muted);
  border-top-color: transparent;
  animation: spin 0.8s linear infinite;
}
.status-dot.ready {
  background: var(--white);
  box-shadow: 0 0 8px rgba(255,255,255,0.7);
}
.status-dot.running {
  background: var(--white);
  box-shadow: 0 0 8px rgba(255,255,255,0.7);
  animation: pulse 1.2s ease-in-out infinite;
}
.status-dot.error {
  background: #555;
  border: 1px solid #777;
}
.status-dot.compiling {
  background: transparent;
  border: 1.5px dashed var(--text-muted);
  animation: spin 1.2s linear infinite;
}

@keyframes spin  { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1);    }
  50%      { opacity:.4; transform:scale(1.2); }
}

.status-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: -0.01em;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── NAV ACTIONS / BUTTONS ───────────────────────────────── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border-radius: 8px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn:disabled { opacity: 0.3; cursor: not-allowed; }
.btn svg { transition: transform 0.2s ease; }
.btn:hover svg { transform: translateY(-0.5px); }

.btn-ghost {
  background: var(--glass-bg);
  border-color: var(--glass-border);
  color: var(--text-muted);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.btn-ghost:active:not(:disabled) { background: var(--glass-bg-active); }

.btn-run {
  background: var(--white);
  color: var(--black);
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(255,255,255,0.15);
}
.btn-run:hover:not(:disabled) {
  background: rgba(255,255,255,0.9);
  box-shadow: 0 4px 22px rgba(255,255,255,0.3);
  transform: translateY(-0.5px);
}
.btn-run:active:not(:disabled) { background: rgba(255,255,255,0.75); transform: none; }

.run-icon { font-size: 8px; margin-right: 1px; }
.btn-run kbd {
  font-family: var(--font-mono);
  font-size: 9px;
  background: rgba(0,0,0,0.08);
  color: var(--black);
  padding: 1px 5px;
  border: 1px solid rgba(0,0,0,0.1);
  margin-left: 2px;
}

/* ── DATA DROPDOWN ───────────────────────────────────────── */
.data-dropdown-wrap {
  position: relative;
}

.data-chevron {
  transition: transform 0.22s ease;
  margin-left: 2px;
}
#btnData[aria-expanded="true"] .data-chevron {
  transform: rotate(180deg);
}

.data-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 320px;
  background: rgba(18,18,20,0.97);
  border: 1px solid var(--glass-border-hover);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.7), 0 2px 12px rgba(0,0,0,0.4);
  backdrop-filter: blur(32px) saturate(140%);
  -webkit-backdrop-filter: blur(32px) saturate(140%);
  z-index: 200;
  overflow: hidden;
  animation: dropdownIn 0.18s cubic-bezier(0.4,0,0.2,1);
}
.data-dropdown.open { display: block; }
@keyframes dropdownIn {
  from { opacity:0; transform:translateY(-6px); }
  to   { opacity:1; transform:translateY(0); }
}

.data-dropdown-header {
  padding: 12px 16px 8px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-family: var(--font-mono);
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 4px;
}

.data-source-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease;
  border-radius: 0;
}
.data-source-item:hover {
  background: rgba(255,255,255,0.05);
}
.data-source-item:last-child { margin-bottom: 4px; }

.ds-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}
.ds-icon-yf   { background: rgba(80,200,120,0.15); color: #50c878; border: 1px solid rgba(80,200,120,0.25); }
.ds-icon-fred { background: rgba(100,150,255,0.15); color: #7aa4ff; border: 1px solid rgba(100,150,255,0.25); }

.ds-info { flex: 1; min-width: 0; }
.ds-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-ui);
  margin-bottom: 2px;
}
.ds-desc {
  font-size: 10px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ds-badge {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.ds-badge-live {
  background: rgba(34,197,94,0.12);
  color: #22c55e;
  border: 1px solid rgba(34,197,94,0.3);
}

/* Light mode overrides for dropdown */
[data-theme="light"] .data-dropdown {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 2px 12px rgba(0,0,0,0.08);
}
[data-theme="light"] .data-source-item:hover {
  background: rgba(0,0,0,0.04);
}
[data-theme="light"] .ds-name { color: #1D1D1F; }
[data-theme="light"] .ds-desc { color: #8E8E93; }

/* ── WORKSPACE OUTER (column: editor row on top, dex panel below) ─ */
.workspace-outer {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--nav-h) - 42px);
  margin: 7px 14px 14px;
  position: relative;
  z-index: 10;
}

/* ── WORKSPACE (horizontal editor | output row) ─────────────── */
.workspace {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 12px 48px rgba(0,0,0,0.55);
  position: relative;
  z-index: 10;
}

/* ── PANES ───────────────────────────────────────────────── */
.pane {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex: 1;
  min-width: 0;
}

.pane-editor { flex: 1 1 55%; }
.pane-output { flex: 1 1 45%; }

.pane-header {
  height: 44px;
  background: rgba(255,255,255,0.01);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  padding: 0 0 0 0;
  gap: 0;
  flex-shrink: 0;
  overflow: hidden;
}

.pane-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 12px;
  color: var(--text-muted);
  padding: 0 16px;
}

/* ── LANGUAGE TABS ───────────────────────────────────────── */
.lang-tabs {
  display: flex;
  align-items: stretch;
  height: 100%;
  flex-shrink: 0;
}

.lang-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  background: transparent;
  border: none;
  border-right: 1px solid var(--glass-border);
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
  position: relative;
  top: 1px;
}

.lang-tab:hover {
  color: var(--text-muted);
  background: rgba(255,255,255,0.025);
}

.lang-tab.active {
  color: var(--text);
  background: rgba(255,255,255,0.03);
  border-bottom-color: var(--white);
}

.lang-icon {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.18s;
}
.lang-tab.active .lang-icon,
.lang-tab:hover   .lang-icon { opacity: 1; }

/* Right meta inside editor pane header */
.pane-right-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 0 14px;
  flex-shrink: 0;
}

.file-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ── PILLS ───────────────────────────────────────────────── */
.pill {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
}
.pill-py  { background: rgba(255,255,255,0.08); color: var(--text);       border: 1px solid var(--glass-border); }
.pill-cpp { background: rgba(255,255,255,0.06); color: var(--text-muted); border: 1px solid var(--glass-border); }
.pill-cs  { background: rgba(255,255,255,0.06); color: var(--text-muted); border: 1px solid var(--glass-border); }
.pill-rs  { background: rgba(255,255,255,0.06); color: var(--text-muted); border: 1px solid var(--glass-border); }
.pill-out { background: rgba(255,255,255,0.03); color: var(--text-muted); border: 1px solid var(--glass-border); }

.editor-meta,
.output-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  opacity: 0.65;
}

/* ── EDITOR MOUNT ────────────────────────────────────────── */
.editor-mount {
  flex: 1;
  overflow: hidden;
  background: #0a0a0a;
}

[data-theme="light"] .editor-mount,
[data-theme="light"] .output-mount {
  background: #ffffff;
}

/* ── RESIZE HANDLE ───────────────────────────────────────── */
.resize-handle {
  width: 1px;
  background: var(--glass-border);
  cursor: col-resize;
  flex-shrink: 0;
  transition: all 0.18s ease;
  position: relative;
  z-index: 15;
}
.resize-handle:hover,
.resize-handle.dragging {
  background: rgba(255,255,255,0.6);
  box-shadow: 0 0 12px rgba(255,255,255,0.15);
  width: 3px;
}

/* ── OUTPUT MOUNT ────────────────────────────────────────── */
.output-mount {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.72;
  background: #0a0a0a;
  scrollbar-width: thin;
  scrollbar-color: var(--glass-border) transparent;
}
.output-mount::-webkit-scrollbar       { width: 5px; height: 5px; }
.output-mount::-webkit-scrollbar-track { background: transparent; }
.output-mount::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 3px;
}
.output-mount::-webkit-scrollbar-thumb:hover { background: var(--glass-border-hover); }

/* Welcome state */
.output-welcome { color: var(--text-muted); padding: 4px 0; }
.welcome-prompt { display: flex; align-items: center; gap: 10px; }
.prompt-caret   { color: var(--white); font-weight: 700; animation: blink 1.2s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.welcome-kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(255,255,255,0.1);
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text);
}

/* ── OUTPUT LINES ────────────────────────────────────────── */
.out-line {
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
  display: block;
}
.out-line.err {
  color: #f43f5e;
  background: rgba(244, 63, 94, 0.06);
  border-left: 2px solid #ef4444;
  padding: 8px 12px;
  margin: 6px 0;
  border-radius: var(--radius-sm);
}
.out-line.sys  { color: var(--text-dim); font-style: italic; }
.out-empty     { color: var(--text-dim); font-style: italic; }

/* Run block */
.out-block { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--glass-border); }
.out-block:first-child { border-top: none; margin-top: 0; padding-top: 0; }

.out-run-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.out-run-num  { font-size: 10px; color: var(--text-muted); font-weight: 500; }
.out-run-time { font-size: 10px; color: var(--text-dim); margin-left: auto; }

.out-success-badge {
  font-size: 9px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.35);
  background: rgba(34, 197, 94, 0.08);
  padding: 2px 7px; border-radius: 4px;
}
.out-error-badge {
  font-size: 9px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.35);
  background: rgba(239, 68, 68, 0.08);
  padding: 2px 7px; border-radius: 4px;
}
.out-lang-badge {
  font-size: 9px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-dim);
  border: 1px solid var(--glass-border);
  padding: 2px 7px; border-radius: 4px;
  font-family: var(--font-mono);
}

/* ── INLINE PLOT OUTPUT ──────────────────────────────────── */
.out-plot-wrap {
  margin: 12px 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  display: inline-block;
  max-width: 100%;
  background: #0a0a0a;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.out-plot-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

/* ── INLINE PLOTLY OUTPUT ────────────────────────────────── */
.out-plotly-wrap {
  margin: 12px 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  min-height: 360px;
  position: relative;
  background: #0a0a0a;
}

/* ── GLOBAL SCROLLBARS ───────────────────────────────────── */
* { scrollbar-width: thin; scrollbar-color: var(--glass-border) transparent; }
::-webkit-scrollbar       { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--glass-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--glass-border-hover); }

/* ══════════════════════════════════════════════════════════
   INIT OVERLAY — full-screen loading splash
   ══════════════════════════════════════════════════════════ */
.init-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5,5,5,0.97);
  backdrop-filter: blur(28px) saturate(120%);
  -webkit-backdrop-filter: blur(28px) saturate(120%);
  transition: opacity 0.7s ease, visibility 0.7s;
}
.init-overlay.hiding {
  opacity: 0;
  visibility: hidden;
}

.init-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 360px;
  padding: 40px 36px;
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.7);
}

/* ── INIT LOGO — Pixelify Sans only, always ─────────────── */
.init-logo {
  display: flex;
  align-items: center;
  user-select: none;
  font-family: 'Pixelify Sans', sans-serif !important;
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 6px;
}

.init-subtitle {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: -16px;
}

/* Progress bar */
.init-progress-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.init-progress-track {
  height: 2px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.init-progress-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,0.4) 0%, #fff 50%, rgba(255,255,255,0.4) 100%);
  background-size: 200% 100%;
  transition: width 0.45s cubic-bezier(0.4,0,0.2,1);
  animation: progressShimmer 1.8s linear infinite;
}
@keyframes progressShimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.init-progress-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
  min-height: 14px;
  letter-spacing: 0.02em;
}

/* Package pills */
.init-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}
.init-pill {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.05);
  color: var(--text-dim);
  transition: all 0.3s ease;
  letter-spacing: 0.02em;
}
.init-pill.loaded {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.18);
  color: var(--text-muted);
  box-shadow: 0 0 8px rgba(255,255,255,0.06);
}

/* -- FULLSCREEN CONTROLS ----------------------------------- */
.pane-fs-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s ease;
}
.pane-fs-btn:hover {
  color: var(--text);
  background: rgba(255,255,255,0.08);
}
[data-theme="light"] .pane-fs-btn:hover {
  background: rgba(0,0,0,0.06);
}

/* Fullscreen state */
.workspace.has-fullscreen .pane:not(.pane-fullscreen) {
  display: none;
}
.workspace.has-fullscreen .resize-handle {
  display: none;
}
.workspace.has-fullscreen .pane-fullscreen {
  flex: 1 1 100% !important;
}

/* ══════════════════════════════════════════════════════════
   DATA EXPLORER — BOTTOM PANEL
   ══════════════════════════════════════════════════════════ */

/* Horizontal drag handle (sits between workspace and dex-panel) */
.resize-handle-h {
  width: 100%;
  height: 5px;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.07);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  cursor: row-resize;
  flex-shrink: 0;
  transition: background 0.15s ease;
  position: relative;
  z-index: 12;
}
.resize-handle-h:hover,
.resize-handle-h.dragging {
  background: rgba(99,102,241,0.35);
}

/* Bottom panel — inline inside workspace-outer */
.dex-panel {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: rgba(10,10,12,0.98);
  border: 1px solid rgba(255,255,255,0.10);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 12px 48px rgba(0,0,0,0.55);
  overflow: hidden;
  transition: height 0.22s cubic-bezier(0.4,0,0.2,1);
  min-height: 0;
}

/* Fullscreen bottom panel — expand to cover the entire workspace-outer */
.workspace-outer.bottom-fullscreen .workspace {
  display: none;
}
.workspace-outer.bottom-fullscreen .resize-handle-h {
  display: none !important;
}
.workspace-outer.bottom-fullscreen .dex-panel {
  flex: 1 1 100%;
  border-radius: var(--radius);
  border-top: 1px solid rgba(255,255,255,0.10);
}

/* Panel header */
.dex-header {
  height: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.015);
}

.dex-header-title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}
.dex-header-title svg { opacity: 0.6; }
.dex-header-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* Header actions group (fullscreen + close buttons) */
.dex-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.dex-close-btn {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.18s ease;
  flex-shrink: 0;
}
.dex-close-btn:hover {
  background: rgba(255,255,255,0.07);
  color: var(--text);
  border-color: rgba(255,255,255,0.18);
}

/* Toolbar row */
.dex-toolbar {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
  background: rgba(255,255,255,0.01);
}

/* Search bar */
.dex-search-wrap {
  flex: 1;
  position: relative;
}
.dex-search-wrap svg {
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  opacity: 0.35;
  pointer-events: none;
}
.dex-search {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 7px 10px 7px 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text);
  outline: none;
  transition: all 0.18s ease;
}
.dex-search::placeholder { color: var(--text-dim); }
.dex-search:focus {
  border-color: rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.07);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.04);
}

/* Source tabs */
.dex-tabs {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.dex-tab {
  padding: 6px 13px;
  border-radius: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  background: transparent;
  color: var(--text-dim);
}
.dex-tab:hover:not(.active) {
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
}
.dex-tab.active.yf {
  background: rgba(80,200,120,0.12);
  border-color: rgba(80,200,120,0.30);
  color: #50c878;
}
.dex-tab.active.fred {
  background: rgba(122,164,255,0.12);
  border-color: rgba(122,164,255,0.30);
  color: #7aa4ff;
}

/* Body — split into tree + preview */
.dex-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* Tree pane */
.dex-tree-pane {
  width: 280px;
  flex-shrink: 0;
  overflow-y: auto;
  overflow-x: hidden;
  border-right: 1px solid rgba(255,255,255,0.05);
  padding: 8px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.06) transparent;
}
.dex-tree-pane::-webkit-scrollbar { width: 4px; }
.dex-tree-pane::-webkit-scrollbar-track { background: transparent; }
.dex-tree-pane::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.07); border-radius: 3px; }

/* Preview pane */
.dex-preview-pane {
  flex: 1;
  overflow-y: auto;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.06) transparent;
}
.dex-preview-pane::-webkit-scrollbar { width: 4px; }
.dex-preview-pane::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.07); border-radius: 3px; }

/* Empty state */
.dex-empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
  opacity: 0.7;
  padding: 40px;
}
.dex-empty-state svg { opacity: 0.3; margin-bottom: 8px; }

/* Preview card */
.dex-preview-card {
  background: rgba(255,255,255,0.025);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px;
  padding: 16px 18px;
}
.dex-preview-name {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.dex-preview-name .dex-preview-icon {
  width: 28px; height: 28px;
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  flex-shrink: 0;
}
.dex-preview-icon.yf { background: rgba(80,200,120,0.15); color: #50c878; border: 1px solid rgba(80,200,120,0.25); }
.dex-preview-icon.fred { background: rgba(122,164,255,0.15); color: #7aa4ff; border: 1px solid rgba(122,164,255,0.25); }

.dex-preview-desc {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}
.dex-preview-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.dex-meta-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-dim);
  letter-spacing: 0.03em;
}
.dex-meta-tag.live {
  background: rgba(34,197,94,0.08);
  border-color: rgba(34,197,94,0.25);
  color: #22c55e;
}
.dex-meta-tag.api {
  background: rgba(122,164,255,0.08);
  border-color: rgba(122,164,255,0.25);
  color: #7aa4ff;
}

.dex-code-preview {
  background: rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #ccc;
  line-height: 1.65;
  white-space: pre;
  overflow-x: auto;
  max-height: 280px;
  overflow-y: auto;
  position: relative;
}
.dex-code-comment { color: #555; }
.dex-code-kw      { color: #cc99cd; }
.dex-code-str     { color: #7ec699; }
.dex-code-fn      { color: #6fb3d2; }
.dex-code-num     { color: #f08d49; }

/* Load button */
.dex-load-btn {
  width: 100%;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  box-shadow: 0 2px 12px rgba(255,255,255,0.1);
}
.dex-load-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(255,255,255,0.18);
}
.dex-load-btn:active { transform: none; opacity: 0.75; }

.dex-static-info {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 6px;
  padding: 8px 10px;
  margin: 4px 0 14px;
  line-height: 1.5;
}
[data-theme="light"] .dex-static-info {
  background: rgba(0,0,0,0.03);
  border-color: rgba(0,0,0,0.08);
}

/* ── TREE NODES ──────────────────────────────────────────── */
.dex-node {
  user-select: none;
}

/* Category (root) */
.dex-cat-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 20px 5px 16px;
  cursor: pointer;
  transition: background 0.15s ease;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.dex-cat-header:hover { background: rgba(255,255,255,0.03); }

.dex-cat-chevron {
  width: 10px; height: 10px;
  transition: transform 0.18s ease;
  flex-shrink: 0;
  opacity: 0.4;
}
.dex-node[aria-expanded="true"] > .dex-cat-header .dex-cat-chevron { transform: rotate(90deg); }

.dex-cat-label { flex: 1; }
.dex-cat-count {
  font-size: 9px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.04);
  padding: 1px 5px;
  border-radius: 3px;
  opacity: 0.6;
}

.dex-cat-children {
  display: none;
  overflow: hidden;
}
.dex-node[aria-expanded="true"] > .dex-cat-children { display: block; }

/* Sub-folder */
.dex-folder {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 20px 4px 0;
  cursor: pointer;
  transition: background 0.15s ease;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  border-radius: 0;
}
.dex-folder:hover { background: rgba(255,255,255,0.03); }
.dex-folder svg { flex-shrink: 0; opacity: 0.5; }
.dex-folder-node {
  overflow: hidden;
}
.dex-folder-children {
  display: none;
}
.dex-folder-node[aria-expanded="true"] > .dex-folder { color: var(--text); }
.dex-folder-node[aria-expanded="true"] > .dex-folder svg { opacity: 0.8; }
.dex-folder-node[aria-expanded="true"] > .dex-folder .dex-folder-chevron { transform: rotate(90deg); }
.dex-folder-node[aria-expanded="true"] > .dex-folder-children { display: block; }

.dex-folder-chevron {
  width: 8px; height: 8px;
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

/* File / leaf node */
.dex-file {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 3px 20px 3px 0;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  border-radius: 0;
  border-left: 2px solid transparent;
}
.dex-file:hover {
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
}
.dex-file.selected {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border-left-color: var(--white);
}
.dex-file svg { flex-shrink: 0; opacity: 0.4; }
.dex-file.selected svg { opacity: 0.8; }
.dex-file-name { flex: 1; }
.dex-file-ext {
  font-size: 8px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.04);
  padding: 1px 4px;
  border-radius: 3px;
  flex-shrink: 0;
  letter-spacing: 0.03em;
}

/* Indentation levels */
.dex-l0 { padding-left: 16px; }
.dex-l1 { padding-left: 28px; }
.dex-l2 { padding-left: 40px; }
.dex-l3 { padding-left: 52px; }
.dex-l4 { padding-left: 64px; }

/* Search highlight */
.dex-hl {
  background: rgba(255,220,0,0.25);
  color: #ffd700;
  border-radius: 2px;
}

/* No-results */
.dex-no-results {
  padding: 20px 20px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  text-align: center;
}

/* Stats bar at bottom */
.dex-stats {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 8px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-dim);
  background: rgba(255,255,255,0.01);
}
.dex-stats-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 6px rgba(34,197,94,0.6);
  flex-shrink: 0;
}

/* ── LIGHT MODE overrides ─────────────────────────────────── */
[data-theme="light"] .dex-panel {
  background: rgba(248,248,252,0.99);
  border-color: rgba(0,0,0,0.10);
  box-shadow: 4px 0 60px rgba(0,0,0,0.18);
}
[data-theme="light"] .dex-header { background: rgba(0,0,0,0.015); border-bottom-color: rgba(0,0,0,0.07); }
[data-theme="light"] .dex-close-btn { border-color: rgba(0,0,0,0.10); }
[data-theme="light"] .dex-close-btn:hover { background: rgba(0,0,0,0.05); }
[data-theme="light"] .dex-search { background: rgba(0,0,0,0.04); border-color: rgba(0,0,0,0.10); }
[data-theme="light"] .dex-search:focus { border-color: rgba(0,0,0,0.25); background: rgba(0,0,0,0.07); }
[data-theme="light"] .dex-tab:hover:not(.active) { background: rgba(0,0,0,0.04); }
[data-theme="light"] .dex-tree-pane { border-right-color: rgba(0,0,0,0.07); }
[data-theme="light"] .dex-cat-header:hover { background: rgba(0,0,0,0.03); }
[data-theme="light"] .dex-folder:hover { background: rgba(0,0,0,0.03); }
[data-theme="light"] .dex-file:hover { background: rgba(0,0,0,0.04); }
[data-theme="light"] .dex-file.selected { background: rgba(0,0,0,0.06); border-left-color: #1D1D1F; }
[data-theme="light"] .dex-preview-card { background: rgba(0,0,0,0.025); border-color: rgba(0,0,0,0.08); }
[data-theme="light"] .dex-code-preview { background: rgba(0,0,0,0.05); border-color: rgba(0,0,0,0.08); color: #1D1D1F; }
[data-theme="light"] .dex-load-btn { background: #1D1D1F; color: #FFFFFF; }
[data-theme="light"] .dex-backdrop { background: rgba(0,0,0,0.35); }
[data-theme="light"] .dex-stats { border-top-color: rgba(0,0,0,0.07); }