:root {
  --bg: #0f172a;
  --panel: #0b1220;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --border: #1f2937;
  --accent: #22d3ee;
  --ok: #10b981;
  --warn: #f59e0b;
  --err: #ef4444;
}

* {
  box-sizing: border-box
}

html,
body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu
}

/* NEW: full-height grid layout so header / main / footer no se monten */
body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

button {
  font: inherit
}

.toolbar {
  display: flex;
  gap: .6rem;
  align-items: center;
  padding: .6rem .8rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  background: linear-gradient(180deg, #0b1220, #0b1220cc);
  backdrop-filter: saturate(150%) blur(6px);
}

.brand {
  font-weight: 800;
  letter-spacing: .5px;
  margin-right: auto
}

.btn {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: .6rem;
  padding: .45rem .7rem;
  cursor: pointer;
  transition: background .2s, transform .05s;
}

.btn:hover {
  background: #141b2f
}

.btn:active {
  transform: translateY(1px)
}

.filename {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: .5rem;
  padding: .35rem .5rem;
  color: var(--text);
  min-width: 180px;
}

/* NEW: main ahora ocupa el 1fr del body grid; sin calc(). */
.main {
  display: grid;
  grid-template-columns: 1fr 360px;
  min-height: 0;
  /* importante para que grid hijos puedan hacer overflow */
  overflow: hidden;
  /* evita que el body tenga scroll; el scroll queda adentro de editor/side */

  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 1rem;
}

#editor {
  flex: 1;
  height: 100%;
  border: none;
  outline: none;
  resize: none;
  padding: 1rem;
  line-height: 1;
  background: transparent;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 1rem;
  overflow: auto;
  /* el scroll vive aquí */
}

.editor-wrap {
  min-height: 0;
  height: 100%
}

.editor-container {
  display: flex;
  height: 100%;
  background: #0e1629;
  border-right: 1px solid var(--border);
  overflow: hidden;
  /* contenedor sin scroll, delega a hijos */
}

.line-numbers {
  background: #101a33;
  color: var(--muted);
  padding: 1rem;
  text-align: right;
  user-select: none;
  min-width: 3ch;
  white-space: pre;
  overflow: hidden;
}

#editor {
  flex: 1;
  height: 100%;
  border: none;
  outline: none;
  resize: none;
  padding: 1rem;
  line-height: 1.2;
  background: transparent;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  overflow: auto;
  /* el scroll vive aquí */
}

.side {
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--panel);
  border-left: 1px solid var(--border);
  min-height: 0;
  /* necesario para que la lista haga overflow */
}

.side h3 {
  margin: 0;
  padding: .6rem .8rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted)
}

.messages {
  padding: .8rem;
  overflow: auto
}

.msg {
  background: #0f1a33;
  border-left: 3px solid var(--warn);
  padding: .5rem .6rem;
  border-radius: .4rem;
  margin-bottom: .5rem;
  white-space: pre-wrap
}

.msg.ok {
  border-color: var(--ok)
}

.msg.err {
  border-color: var(--err)
}

.msg.warn {
  border-color: var(--warn)
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .45rem .8rem;
  border-top: 1px solid var(--border);
  color: var(--muted)
}