/* ── Codebase Atlas — App Styles ────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: var(--font-sans);
  font-size: var(--size-base);
  color: var(--text);
  background: var(--paper);
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: var(--header-bg);
  display: flex; align-items: center;
  padding: 0 16px; gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-brand {
  font-size: var(--size-md); font-weight: 600;
  color: var(--header-text); letter-spacing: -0.02em;
  white-space: nowrap;
}
.header-sep { color: rgba(255,255,255,0.2); }
.header-spacer { flex: 1; }
.h-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 4px 11px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  color: var(--header-text);
  font-family: var(--font-sans); font-size: var(--size-sm);
  cursor: pointer; transition: background 0.12s;
}
.h-btn:hover { background: rgba(255,255,255,0.14); }
.h-btn-reset {
  color: rgba(255,255,255,0.55);
  background: transparent; border-color: rgba(255,255,255,0.08);
}
.h-btn-reset:hover { background: rgba(255,255,255,0.08); color: var(--header-text); }
.h-link {
  font-size: var(--size-sm); color: rgba(255,255,255,0.4);
  text-decoration: none; padding: 4px 6px;
  transition: color 0.12s;
}
.h-link:hover { color: var(--header-text); }
.kbd {
  font-family: var(--font-mono); font-size: 10px;
  background: rgba(255,255,255,0.1); border-radius: 2px; padding: 1px 4px;
}

/* ── Root layout ─────────────────────────────────────────────── */
.layout {
  position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: var(--tree-w) 1fr var(--panel-w);
  overflow: hidden;
}

/* ── Shared panel chrome ─────────────────────────────────────── */
.pane { display: flex; flex-direction: column; overflow: hidden; }
.pane-hd {
  flex-shrink: 0;
  display: flex; align-items: center; gap: 6px;
  padding: 0 12px;
  height: 34px;
  background: var(--paper-light);
  border-bottom: 1px solid var(--border-light);
  font-size: var(--size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-muted);
}
.pane-hd span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pane-body { flex: 1; overflow-y: auto; }

/* ── File tree ───────────────────────────────────────────────── */
.tree-pane {
  background: var(--paper);
  border-right: 1px solid var(--border);
}
.tree-list { padding: 4px 0; }
.tree-row {
  display: flex; align-items: center; gap: 3px;
  padding: 0 8px; height: 24px;
  cursor: pointer; user-select: none;
  font-size: var(--size-sm);
  border-left: 2px solid transparent;
  transition: background 0.08s;
}
.tree-row:hover { background: rgba(180,69,26,0.06); }
.tree-row.active {
  background: var(--rust-dim); border-left-color: var(--rust);
  color: var(--rust); font-weight: 500;
}
.tree-arrow {
  font-size: 9px; color: var(--text-faint); flex-shrink: 0; width: 10px;
}
.tree-icon { font-size: 11px; flex-shrink: 0; }
.tree-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-dir { color: var(--text); font-weight: 500; }
.tree-file { color: var(--text-muted); }
.tree-file:hover, .tree-file.active { color: var(--rust); }

/* ── Editor ──────────────────────────────────────────────────── */
.editor-pane { background: var(--paper-light); overflow: hidden; }
.editor-hd {
  flex-shrink: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 0 16px; height: 38px;
  border-bottom: 1px solid var(--border);
  background: var(--paper-light);
}
.editor-path {
  flex: 1;
  font-family: var(--font-mono); font-size: var(--size-sm);
  color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.editor-path strong { color: var(--text); }
.editor-acts { display: flex; gap: 6px; flex-shrink: 0; }
.btn {
  padding: 3px 10px;
  border-radius: var(--radius); border: 1px solid var(--border);
  background: transparent; color: var(--text);
  font-family: var(--font-sans); font-size: var(--size-sm);
  cursor: pointer; transition: all 0.1s;
}
.btn:hover { background: rgba(0,0,0,0.05); }
.btn-primary { background: var(--rust); color: #fff; border-color: var(--rust); }
.btn-primary:hover { background: var(--rust-dark); }
.editor-body { flex: 1; overflow: auto; position: relative; }
#code-display {
  font-family: var(--font-mono); font-size: var(--size-sm);
  line-height: 1.65; padding: 16px;
  white-space: pre; tab-size: 2;
  min-height: 100%;
}
#code-edit {
  width: 100%; height: 100%; min-height: 100%;
  font-family: var(--font-mono); font-size: var(--size-sm);
  line-height: 1.65; padding: 16px;
  border: none; outline: none; resize: none;
  background: var(--paper-light); color: var(--text); tab-size: 2;
}
.editor-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100%; gap: 10px; color: var(--text-faint);
  font-size: var(--size-sm);
}
.editor-empty-glyph { font-size: 40px; opacity: 0.25; }

/* Syntax token classes */
.k  { color: var(--tok-keyword); font-weight: 500; }
.s  { color: var(--tok-string); }
.c  { color: var(--tok-comment); font-style: italic; }
.fn { color: var(--tok-fn); }
.n  { color: var(--tok-number); }

/* ── Right panel (outline + call graph) ──────────────────────── */
.right-pane {
  border-left: 1px solid var(--border);
  background: var(--paper);
  display: flex; flex-direction: column; overflow: hidden;
}
.outline-pane {
  flex: 0 0 auto;
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column;
  max-height: 300px;
}
.outline-pane .pane-body { max-height: 266px; overflow-y: auto; }
.callgraph-pane {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
}

/* Outline items */
.sym-row {
  display: flex; align-items: center; gap: 6px;
  padding: 0 12px; height: 26px;
  cursor: pointer;
  font-family: var(--font-mono); font-size: var(--size-xs);
  border-left: 2px solid transparent;
  transition: background 0.08s;
}
.sym-row:hover { background: rgba(180,69,26,0.06); border-left-color: var(--border); }
.sym-row.active {
  background: var(--rust-dim); border-left-color: var(--rust); color: var(--rust);
}
.sym-icon { color: var(--text-faint); font-size: 10px; flex-shrink: 0; }
.sym-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sym-line { color: var(--text-faint); font-size: 10px; flex-shrink: 0; }
.sym-rename-btn {
  display: none; padding: 0 5px; font-size: 10px;
  border: 1px solid var(--border); border-radius: 2px;
  background: transparent; color: var(--text-muted);
  font-family: var(--font-sans); cursor: pointer; flex-shrink: 0;
  line-height: 18px;
}
.sym-row:hover .sym-rename-btn { display: block; }
.sym-rename-btn:hover { background: var(--rust); color: #fff; border-color: var(--rust); }

.sym-extract-btn {
  display: none; padding: 0 5px; font-size: 10px;
  border: 1px solid var(--border); border-radius: 2px;
  background: transparent; color: var(--text-muted);
  font-family: var(--font-sans); cursor: pointer; flex-shrink: 0;
  line-height: 18px;
}
.sym-row:hover .sym-extract-btn { display: block; }
.sym-extract-btn:hover { background: #1a7ab4; color: #fff; border-color: #1a7ab4; }

/* Call graph */
.cg-section { padding: 10px 12px; }
.cg-section + .cg-section { border-top: 1px solid var(--border-light); }
.cg-label {
  font-size: var(--size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-muted); margin-bottom: 6px;
}
.cg-item {
  display: flex; flex-direction: column;
  padding: 4px 6px; border-radius: var(--radius);
  cursor: pointer; margin-bottom: 2px;
  transition: background 0.08s;
}
.cg-item:hover { background: var(--rust-dim); }
.cg-item:hover .cg-fn { color: var(--rust); }
.cg-fn {
  font-family: var(--font-mono); font-size: var(--size-xs);
  color: var(--text); font-weight: 500;
}
.cg-path {
  font-size: 10px; color: var(--text-faint);
  font-family: var(--font-mono);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cg-empty { color: var(--text-faint); font-size: var(--size-xs); font-style: italic; padding: 2px 6px; }
.cg-more { font-size: 10px; color: var(--text-faint); padding: 4px 6px; }

/* ── Command palette ─────────────────────────────────────────── */
.pal-overlay {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(42,37,31,0.45);
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 72px;
}
.pal-overlay.hidden { display: none; }
.pal-box {
  width: 580px; max-height: 500px;
  background: var(--paper-light); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; overflow: hidden;
}
.pal-search {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.pal-search-icon { color: var(--text-muted); font-size: 14px; }
#pal-input {
  flex: 1; border: none; outline: none; background: transparent;
  font-family: var(--font-sans); font-size: var(--size-md); color: var(--text);
}
#pal-input::placeholder { color: var(--text-faint); }
.pal-results { overflow-y: auto; flex: 1; }
.pal-sec-hd {
  padding: 8px 14px 3px;
  font-size: var(--size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-muted);
}
.pal-row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 14px; cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 0.08s;
}
.pal-row:hover, .pal-row.sel {
  background: var(--rust-dim); border-left-color: var(--rust);
}
.pal-row-ico { color: var(--text-muted); font-size: 12px; width: 14px; text-align: center; flex-shrink: 0; }
.pal-row-body { flex: 1; overflow: hidden; }
.pal-row-name {
  font-family: var(--font-mono); font-size: var(--size-sm);
  color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pal-row-sub {
  font-size: 11px; color: var(--text-faint);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pal-empty { padding: 20px; text-align: center; color: var(--text-faint); font-size: var(--size-sm); }
.pal-hint {
  padding: 8px 14px; border-top: 1px solid var(--border-light);
  font-size: var(--size-xs); color: var(--text-faint); flex-shrink: 0;
  display: flex; gap: 12px;
}
.pal-hint kbd {
  font-family: var(--font-mono); font-size: 10px;
  background: var(--paper); border: 1px solid var(--border);
  border-radius: 2px; padding: 1px 4px;
}

/* ── Rename dialog ───────────────────────────────────────────── */
.ren-overlay {
  position: fixed; inset: 0; z-index: 600;
  background: rgba(42,37,31,0.4);
  display: flex; align-items: center; justify-content: center;
}
.ren-overlay.hidden { display: none; }
.ren-box {
  width: 420px; background: var(--paper-light);
  border: 1px solid var(--border); border-radius: 8px;
  box-shadow: var(--shadow); padding: 22px;
}
.ren-title { font-weight: 600; font-size: var(--size-md); margin-bottom: 6px; }
.ren-desc { font-size: var(--size-sm); color: var(--text-muted); margin-bottom: 16px; }
.ren-label {
  font-size: var(--size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-muted); margin-bottom: 5px;
}
#ren-input {
  width: 100%;
  font-family: var(--font-mono); font-size: var(--size-md);
  padding: 7px 10px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--paper);
  color: var(--text); outline: none; margin-bottom: 14px;
}
#ren-input:focus { border-color: var(--rust); }
.ren-foot { display: flex; align-items: center; gap: 8px; }
.ren-count { flex: 1; font-size: var(--size-xs); color: var(--text-muted); }

/* ── Extract dialog ──────────────────────────────────────────── */
.ext-overlay {
  position: fixed; inset: 0; z-index: 600;
  background: rgba(42,37,31,0.4);
  display: flex; align-items: center; justify-content: center;
}
.ext-overlay.hidden { display: none; }
.ext-box {
  width: 500px; background: var(--paper-light);
  border: 1px solid var(--border); border-radius: 8px;
  box-shadow: var(--shadow); padding: 22px;
}
.ext-title { font-weight: 600; font-size: var(--size-md); margin-bottom: 6px; }
.ext-desc { font-size: var(--size-sm); color: var(--text-muted); margin-bottom: 12px; }
.ext-preview-label {
  font-size: var(--size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-muted); margin-bottom: 5px;
}
.ext-preview {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-muted);
  background: var(--paper); border: 1px solid var(--border-light);
  border-radius: var(--radius); padding: 8px 10px; margin-bottom: 16px;
  max-height: 110px; overflow: auto; white-space: pre;
}
.ext-label {
  font-size: var(--size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-muted); margin-bottom: 5px;
}
#ext-path {
  width: 100%;
  font-family: var(--font-mono); font-size: var(--size-sm);
  padding: 7px 10px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--paper);
  color: var(--text); outline: none; margin-bottom: 14px;
}
#ext-path:focus { border-color: #1a7ab4; }
.ext-foot { display: flex; align-items: center; gap: 8px; justify-content: flex-end; }

/* ── Scrollbars ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Utilities ───────────────────────────────────────────────── */
.hidden { display: none !important; }