/* ide.css — IDE-style page chrome.
   Layout is CSS Grid driven by --ide-* tokens (overridable per-page).
   No required classes on inner panels — every selector keys off
   semantic elements or data-attributes. */

body[data-layout="ide"] {
  height: 100dvh;
  overflow: hidden;
  display: grid;
  grid-template:
    "header header header" var(--ide-header)
    "left   center right"  1fr
    "status status status" var(--ide-status)
    / var(--ide-left) 1fr var(--ide-right);
  background: var(--bg);
}

body[data-layout="ide"] > header {
  grid-area: header;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-inline: 0.85rem;
  background: var(--surface);
  border-block-end: 1px solid var(--border);
}
body[data-layout="ide"] > header h1 {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
body[data-layout="ide"] > header h1 em { color: var(--accent); font-style: normal; }
body[data-layout="ide"] > header .badge {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--dim);
  padding: 0.15rem 0.5rem;
  background: var(--elevated);
  border-radius: 999px;
}

body[data-layout="ide"] > footer {
  grid-area: status;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-inline: 0.85rem;
  background: var(--surface);
  border-block-start: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
body[data-layout="ide"] > footer .accent { color: var(--accent); text-transform: none; letter-spacing: 0; }
body[data-layout="ide"] > footer .sep    { inline-size: 1px; block-size: 10px; background: var(--border); }
body[data-layout="ide"] > footer .spacer { flex: 1; }

/* Panels live in the four named areas. Each is <section data-area=…>. */
[data-area="left"]   { grid-area: left;   border-inline-end: 1px solid var(--border); background: var(--surface); }
[data-area="center"] { grid-area: center; background: var(--bg);     overflow: hidden; }
[data-area="right"]  { grid-area: right;  border-inline-start: 1px solid var(--border); background: var(--surface); }
[data-area="bottom"] { grid-area: bottom; border-block-start: 1px solid var(--border); background: var(--surface); }

[data-area] {
  display: grid;
  grid-template-rows: auto 1fr;
  min-block-size: 0;
  min-inline-size: 0;
}

/* Panel header — small caps title + optional badge/actions. */
[data-area] > header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  block-size: 32px;
  padding-inline: 0.65rem;
  background: var(--surface-2);
  border-block-end: 1px solid var(--border);
}
[data-area] > header h2 {
  flex: 1;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0;
}
[data-area] > header .badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--dim);
  background: var(--elevated);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
}
[data-area] > header .action {
  display: inline-flex; align-items: center; justify-content: center;
  inline-size: 22px; block-size: 22px;
  border-radius: var(--radius-sm);
  color: var(--faint);
}
[data-area] > header .action:hover { background: var(--elevated); color: var(--text); }

[data-area] > .body { overflow: auto; padding: 0.5rem 0; }
[data-area][data-role="raw"] > .body { padding: 0; }

/* ── File tree ── */
.tree { display: grid; }
.tree-item {
  display: grid;
  grid-template-columns: 14px 16px 1fr auto;
  align-items: center;
  gap: 0.4rem;
  block-size: 26px;
  padding-inline: 0.6rem;
  border-inline-start: 2px solid transparent;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--dim);
}
.tree-item:hover { background: var(--elevated); color: var(--text); }
.tree-item[aria-selected="true"] {
  background: var(--accent-dim);
  color: var(--accent);
  border-inline-start-color: var(--accent);
}
.tree-item .chev { color: var(--faint); transition: transform 120ms; }
.tree-item[aria-expanded="false"] .chev { transform: rotate(-90deg); }
.tree-item[data-type="file"] .chev { visibility: hidden; }
.tree-item .meta { font-family: var(--mono); font-size: 0.68rem; color: var(--faint); }
.tree-item[data-depth="1"] { padding-inline-start: 1.6rem; }
.tree-item[data-depth="2"] { padding-inline-start: 2.6rem; }
.tree-item[data-depth="3"] { padding-inline-start: 3.6rem; }

/* ── Tabs strip (inside a panel header or stand-alone) ── */
[role="tablist"] {
  display: flex;
  align-items: stretch;
}
[role="tab"] {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-inline: 0.85rem;
  border-inline-end: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--dim);
  white-space: nowrap;
  position: relative;
}
[role="tab"][aria-selected="true"] {
  background: var(--bg);
  color: var(--text);
}
[role="tab"][aria-selected="true"]::after {
  content: '';
  position: absolute;
  inset: auto 0 -1px 0;
  block-size: 1px;
  background: var(--accent);
}
[role="tab"] .x {
  display: inline-flex; align-items: center; justify-content: center;
  inline-size: 16px; block-size: 16px;
  border-radius: var(--radius-sm);
  color: var(--faint);
}
[role="tab"] .x:hover { background: var(--border); color: var(--text); }

/* ── Code pane with gutter ── */
.editor {
  display: grid;
  grid-template-columns: 48px 1fr;
  block-size: 100%;
  overflow: auto;
  background: var(--bg);
}
.gutter {
  display: flex;
  flex-direction: column;
  padding: 0.85rem 0.55rem 0.85rem 0;
  text-align: end;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--faint);
  line-height: 1.6;
  user-select: none;
  background: var(--surface);
  border-inline-end: 1px solid var(--border);
}
.code {
  margin: 0;
  padding: 0.85rem 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre;
  color: var(--text);
  background: var(--bg);
  border: 0;
}

/* ── Hex viewer ── */
.hex {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.6;
  padding: 0.5rem 0;
}
.hex-row { display: grid; grid-template-columns: 64px 1fr 140px; gap: 0.85rem; padding-inline: 0.85rem; }
.hex-row:hover { background: rgba(255,255,255,0.02); }
.hex-row .off  { color: var(--faint); }
.hex-row .bytes { display: flex; flex-wrap: wrap; gap: 0.25rem; }
.hex-byte { display: inline-block; min-inline-size: 1.4em; text-align: center; border-radius: 2px; }
.hex-byte[data-field="magic"] { background: var(--accent-dim); color: var(--accent); }
.hex-byte[data-field="len"]   { background: rgba(96,165,250,0.12); color: var(--blue); }
.hex-byte[data-field="crc"]   { background: rgba(192,132,252,0.12); color: var(--purple); }
.hex-byte[aria-selected="true"] { background: var(--accent); color: var(--bg); }
.hex-byte.np { color: var(--rose); opacity: 0.6; }
.hex-row .ascii { color: var(--dim); letter-spacing: 0.4px; }

/* ── Key/value inspector ── */
.kv {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 0.85rem;
  row-gap: 0.2rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.78rem;
}
.kv dt { color: var(--faint); font-family: var(--mono); }
.kv dd { margin: 0; color: var(--text); font-family: var(--mono); }
.kv dd.accent { color: var(--accent); }

/* ── Terminal-look panel ── */
[data-role="terminal"] > .body {
  background: #050506;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  padding: 0.75rem 1rem;
}
[data-role="terminal"] .prompt { color: var(--accent); margin-inline-end: 0.5rem; }

/* ── Variant layouts (set data-variant on body[data-layout="ide"]) ── */
body[data-layout="ide"][data-variant="dual"] {
  grid-template:
    "header header" var(--ide-header)
    "left   center" 1fr
    "status status" var(--ide-status)
    / var(--ide-left) 1fr;
}
body[data-layout="ide"][data-variant="dual"] [data-area="right"],
body[data-layout="ide"][data-variant="dual"] [data-area="bottom"] { display: none; }

body[data-layout="ide"][data-variant="solo"] {
  grid-template:
    "header" var(--ide-header)
    "center" 1fr
    "status" var(--ide-status)
    / 1fr;
}
body[data-layout="ide"][data-variant="solo"] [data-area="left"],
body[data-layout="ide"][data-variant="solo"] [data-area="right"],
body[data-layout="ide"][data-variant="solo"] [data-area="bottom"] { display: none; }

body[data-layout="ide"][data-variant="with-bottom"] {
  grid-template:
    "header header header" var(--ide-header)
    "left   center right"  1fr
    "bottom bottom bottom" var(--ide-bottom)
    "status status status" var(--ide-status)
    / var(--ide-left) 1fr var(--ide-right);
}