:root {
  --bg: #12121c;
  --bg2: #1a1a28;
  --panel: #1e1e2e;
  --panel2: #181826;
  --border: #2d2d44;
  --text: #e4e4f0;
  --muted: #8b8ba7;
  --accent: #a855f7;
  --accent2: #22d3ee;
  --wasm: #654ff0;
  --key: #c792ea;
  --type: #82aaff;
  --str: #c3e88d;
  --num: #f78c6c;
  --comment: #5f6788;
  --js: #f0db4f;
  --ok: #4ade80;
  --warn: #fbbf24;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}
.light-mode {
  --bg: #f4f4fb;
  --bg2: #ececf7;
  --panel: #ffffff;
  --panel2: #f7f7fc;
  --border: #d9d9ec;
  --text: #1e1e2e;
  --muted: #6a6a86;
  --accent: #7c3aed;
  --accent2: #0891b2;
  --key: #7c3aed;
  --type: #2563eb;
  --str: #16803c;
  --num: #c2410c;
  --comment: #94a3b8;
  --ok: #16a34a;
  --warn: #b45309;
  --shadow: 0 8px 30px rgba(80,60,140,.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(168,85,247,.10), transparent 40%),
    radial-gradient(circle at 88% 92%, rgba(101,79,240,.12), transparent 45%);
  background-attachment: fixed;
  color: var(--text);
  font-family: 'Bricolage Grotesque', system-ui, sans-serif;
  min-height: 100vh;
  transition: background .3s, color .3s;
}

.app {
  max-width: 1250px;
  margin: 0 auto;
  padding: 18px 16px 40px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: fadeIn .5s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---- header ---- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  background: linear-gradient(120deg, var(--panel), var(--panel2));
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
}
.hdr-title {
  font-size: clamp(1.25rem, 3.5vw, 1.9rem);
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.hdr-title .arrow { color: var(--accent2); }
.hdr-title .wand { filter: drop-shadow(0 0 8px var(--accent)); }
.hdr-sub { margin: 6px 0 0; color: var(--muted); font-size: .85rem; font-weight: 400; max-width: 480px; }
.hdr-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.btn-convert {
  background: linear-gradient(100deg, var(--accent), var(--wasm));
  color: #fff;
  box-shadow: 0 0 0 rgba(168,85,247,.5);
  border: none;
}
.btn-convert:hover { box-shadow: 0 0 18px rgba(168,85,247,.55); }
.btn-ghost {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---- toolbar ---- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 4px 2px;
}
.live-toggle { display: flex; align-items: center; gap: 6px; font-size: .85rem; color: var(--muted); cursor: pointer; user-select: none; }
.live-toggle input { accent-color: var(--accent); width: 15px; height: 15px; }
.example-select {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: .85rem;
  font-family: inherit;
  cursor: pointer;
}
.mascot { font-size: 1.4rem; margin-left: auto; animation: bob 2.5s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }

/* ---- panes ---- */
.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.pane {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 340px;
}
.pane-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--panel2);
  border-bottom: 1px solid var(--border);
}
.badge {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 800;
  font-size: .7rem;
  padding: 2px 7px;
  border-radius: 5px;
  color: #12121c;
}
.badge-js { background: var(--js); }
.badge-as { background: var(--wasm); color: #fff; }
.pane-title { font-weight: 700; font-size: .9rem; }
.counts { margin-left: auto; font-size: .72rem; color: var(--muted); font-family: 'JetBrains Mono', monospace; }

#out-pane.pulse { animation: pulseGlow .6s ease; }
@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 rgba(168,85,247,0), var(--shadow); }
  40% { box-shadow: 0 0 26px rgba(168,85,247,.55), var(--shadow); }
  100% { box-shadow: 0 0 0 rgba(168,85,247,0), var(--shadow); }
}

/* ---- editor ---- */
.editor-wrap {
  display: flex;
  flex: 1;
  overflow: hidden;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 13px;
  line-height: 1.55;
}
.gutter {
  padding: 12px 8px 12px 14px;
  color: var(--comment);
  text-align: right;
  white-space: pre;
  user-select: none;
  background: var(--panel2);
  border-right: 1px solid var(--border);
  min-width: 42px;
  overflow: hidden;
}
.code-area { position: relative; flex: 1; overflow: hidden; }
.code-pre, .code-ta {
  margin: 0;
  padding: 12px 14px;
  font: inherit;
  line-height: 1.55;
  white-space: pre;
  word-wrap: normal;
  tab-size: 2;
  border: none;
  overflow: auto;
  min-height: 100%;
}
.code-pre {
  color: var(--text);
  overflow-x: auto;
}
.code-under { position: absolute; inset: 0; pointer-events: none; color: transparent; }
.code-ta {
  position: relative;
  width: 100%;
  height: 100%;
  background: transparent;
  color: var(--text);
  resize: none;
  outline: none;
  caret-color: var(--accent);
}
.code-ta::placeholder { color: var(--muted); }

/* tokens */
.tok-key { color: var(--key); font-weight: 600; }
.tok-type { color: var(--type); font-weight: 600; }
.tok-string { color: var(--str); }
.tok-num { color: var(--num); }
.tok-comment { color: var(--comment); font-style: italic; }

/* ---- notes ---- */
.notes {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.notes-head {
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--panel2);
  border: none;
  color: var(--text);
  font-family: inherit;
  font-weight: 700;
  font-size: .9rem;
  cursor: pointer;
}
.notes-body { padding: 8px 14px 14px; display: flex; flex-direction: column; gap: 5px; max-height: 260px; overflow-y: auto; }
.note {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: .82rem;
  padding: 6px 10px;
  border-radius: 8px;
  line-height: 1.4;
}
.note code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--panel2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: .78rem;
  color: var(--accent2);
}
.note-summary { background: linear-gradient(90deg, rgba(168,85,247,.12), transparent); font-weight: 600; }
.note-ok { color: var(--ok); }
.note-warn { color: var(--warn); background: rgba(251,191,36,.07); }
.note-tip { color: var(--accent2); }
.note-daily { border-top: 1px dashed var(--border); margin-top: 4px; padding-top: 10px; }
.note-icon { flex-shrink: 0; }

/* ---- mobile tabs ---- */
.mobile-tabs { display: none; gap: 8px; }
.mtab {
  flex: 1;
  padding: 10px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--muted);
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
}
.mtab.active { background: linear-gradient(100deg, var(--accent), var(--wasm)); color: #fff; border-color: transparent; }

/* ---- footer ---- */
.app-footer {
  text-align: center;
  font-size: .78rem;
  color: var(--muted);
  padding: 10px;
}
.app-footer code { font-family: 'JetBrains Mono', monospace; color: var(--accent2); }
.app-footer a { color: var(--accent); font-weight: 700; text-decoration: none; }
.app-footer a:hover { text-decoration: underline; }

/* ---- toast ---- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(100deg, var(--accent), var(--wasm));
  color: #fff;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: .85rem;
  box-shadow: 0 8px 26px rgba(0,0,0,.4);
  animation: toastIn .3s ease;
  z-index: 100;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 12px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ---- responsive ---- */
@media (max-width: 760px) {
  .panes { grid-template-columns: 1fr; }
  .mobile-tabs { display: flex; }
  .hide-mobile { display: none; }
  .show-mobile { display: flex; }
  .pane { min-height: 300px; }
  .hdr-sub { display: none; }
  .mascot { margin-left: 0; }
}