/* ============================================================
   Chart Studio — tool-specific styles.
   Loads on top of lrf-theme.css (shared brand chrome).

   Note: the rendered chart SVGs embed DM Sans as their own
   output typeface (set in the SVG markup, see the script).
   That is a deliverable spec and is independent of the page
   UI font, which is Manrope via the shared theme.
   ============================================================ */

.hidden { display: none !important; }

/* ---------- Workspace ---------- */
.workspace { display: grid; grid-template-columns: 420px 1fr; gap: 1.75rem; align-items: start; }

.panel { background: var(--lrf-white); border: 1px solid var(--lrf-line); border-radius: var(--r); overflow: hidden; }
.panel-section { padding: 1.25rem 1.35rem; border-bottom: 1px solid var(--lrf-line); }
.panel-section:last-child { border-bottom: none; }
.sec-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  font-weight: 700; color: var(--lrf-pink); margin-bottom: 0.85rem;
}

/* ---------- Segmented control ---------- */
.segmented { display: grid; gap: 1px; background: var(--lrf-line); border: 1.5px solid var(--lrf-ink); border-radius: var(--r); overflow: hidden; }
.segmented.cols-4 { grid-template-columns: repeat(2, 1fr); }
.segmented.cols-3 { grid-template-columns: repeat(3, 1fr); }
.segmented.cols-2 { grid-template-columns: repeat(2, 1fr); }
.seg-btn {
  font-family: inherit; font-size: 13px; font-weight: 600; padding: 0.6rem 0.4rem;
  background: var(--lrf-white); color: var(--lrf-ink); border: none; cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.seg-btn:hover { background: var(--lrf-cream); }
.seg-btn.active { background: var(--lrf-pink); color: #fff; }

/* ---------- Fields (dense control panel) ---------- */
.field { margin-bottom: 0.9rem; }
.field:last-child { margin-bottom: 0; }
.field label, .check-row label {
  display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  font-weight: 600; color: var(--lrf-muted); margin-bottom: 0.4rem;
}
.field input[type=text], .field input[type=number], .field select {
  font-size: 14px; padding: 0.6rem 0.7rem;
}
.field select { padding-right: 2rem; background-position: right 0.7rem center; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.field-row .field { margin-bottom: 0; }

/* Checkboxes */
.check-row { display: flex; flex-wrap: wrap; gap: 0.6rem 1.1rem; }
.chk { display: flex; align-items: center; gap: 0.45rem; font-size: 13px; font-weight: 500; color: var(--lrf-ink-soft); cursor: pointer; }
.chk input { width: 16px; height: 16px; accent-color: var(--lrf-pink); cursor: pointer; }

/* ---------- Data grid ---------- */
.grid-wrap { overflow-x: auto; border: 1px solid var(--lrf-line); border-radius: var(--r); }
table.data-grid { border-collapse: collapse; width: 100%; font-size: 13px; }
table.data-grid th, table.data-grid td { border: 1px solid var(--lrf-line); padding: 0; position: relative; }
table.data-grid th { background: var(--lrf-cream); }
table.data-grid input { width: 100%; min-width: 72px; border: none; background: transparent; padding: 0.45rem 0.5rem; font-family: inherit; font-size: 13px; color: var(--lrf-ink); }
table.data-grid th input { font-weight: 700; }
table.data-grid input:focus { outline: none; background: var(--lrf-pink-light); box-shadow: none; }
table.data-grid .cat-cell input { font-weight: 600; }
table.data-grid td.grip, table.data-grid th.grip-head { width: 24px; min-width: 24px; text-align: center; background: var(--lrf-cream); color: var(--lrf-muted); cursor: grab; user-select: none; padding: 0; }
table.data-grid td.grip { font-size: 13px; line-height: 1; }
table.data-grid td.grip:active { cursor: grabbing; }
table.data-grid td.grip:hover { color: var(--lrf-pink); }
table.data-grid tbody tr.dragging { opacity: 0.4; }
table.data-grid tbody tr.drop-above td { box-shadow: inset 0 2px 0 0 var(--lrf-pink); }
table.data-grid tbody tr.drop-below td { box-shadow: inset 0 -2px 0 0 var(--lrf-pink); }
.grid-x { position: absolute; top: 2px; right: 2px; width: 16px; height: 16px; line-height: 14px; text-align: center; font-size: 12px; color: var(--lrf-muted); background: var(--lrf-white); border: 1px solid var(--lrf-line); border-radius: 2px; cursor: pointer; padding: 0; }
.grid-x:hover { color: var(--lrf-pink); border-color: var(--lrf-pink); }
.grid-add { background: var(--lrf-white); color: var(--lrf-ink); cursor: pointer; font-weight: 700; font-size: 16px; line-height: 1; padding: 0.4rem; border: 1px solid var(--lrf-line); }
.grid-add:hover { background: var(--lrf-cream); color: var(--lrf-pink); }
.grid-actions { display: flex; gap: 0.6rem; margin-top: 0.7rem; }

.paste-area { margin-top: 0.7rem; display: none; }
.paste-area.open { display: block; }
.paste-area textarea { height: 110px; min-height: 0; font-family: 'SFMono-Regular','Menlo','Consolas',monospace; font-size: 12px; padding: 0.6rem; }
.hint { font-size: 12px; color: var(--lrf-muted); margin-top: 0.5rem; line-height: 1.45; }

/* ---------- Preview ---------- */
.preview-panel { position: sticky; top: 1.25rem; }
.preview-head { display: flex; align-items: baseline; justify-content: space-between; padding: 1rem 1.35rem; border-bottom: 1px solid var(--lrf-line); }
.preview-head .sec-label { margin-bottom: 0; }
.preview-head .dims { font-size: 12px; color: var(--lrf-muted); font-variant-numeric: tabular-nums; }
.stage { padding: 1.5rem; background: var(--lrf-cream); display: flex; justify-content: center; align-items: center; min-height: 360px; overflow: auto; }
.stage .canvas-box { background: var(--lrf-white); border: 1px solid var(--lrf-line); box-shadow: var(--shadow-sm); max-width: 100%; }
.stage svg { display: block; max-width: 100%; height: auto; }
.empty-note { color: var(--lrf-muted); font-size: 14px; }
.export-bar { padding: 1rem 1.35rem; display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; border-top: 1px solid var(--lrf-line); }
.export-bar .spacer { flex: 1; }

/* ---------- Methodology ---------- */
.methodology { background: var(--lrf-cream); border-top: 1px solid var(--lrf-line); margin-top: 3rem; }
.methodology-inner { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.methodology summary { list-style: none; cursor: pointer; padding: 2.25rem 0; user-select: none; }
.methodology summary::-webkit-details-marker { display: none; }
.methodology summary .eyebrow { display: block; margin-bottom: 0.4rem; }
.methodology summary h2 { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; display: flex; align-items: center; justify-content: space-between; }
.methodology summary .m-toggle::before { content: '+'; font-weight: 400; color: var(--lrf-pink); font-size: 1.9rem; }
.methodology details[open] summary .m-toggle::before { content: '\2212'; }
.methodology summary .sub { margin-top: 0.4rem; font-size: 14px; color: var(--lrf-muted); }
.methodology-body { padding: 0 0 2.75rem; font-size: 15px; color: var(--lrf-ink-soft); max-width: 760px; line-height: 1.65; }
.methodology-body h3 { font-size: 1.02rem; font-weight: 800; color: var(--lrf-ink); margin: 1.75rem 0 0.5rem; }
.methodology-body h3:first-child { margin-top: 0; }
.methodology-body p { margin-bottom: 0.85rem; }
.methodology-body ul { margin: 0.5rem 0 1rem 1.25rem; }
.methodology-body li { margin-bottom: 0.4rem; }
.methodology-body code { font-family: 'SFMono-Regular','Menlo','Consolas',monospace; font-size: 0.88em; background: var(--lrf-white); border: 1px solid var(--lrf-line); padding: 1px 5px; border-radius: 2px; }
.methodology-body strong { color: var(--lrf-ink); font-weight: 800; }

/* ---------- Footer (multi-column colophon) ---------- */
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; }
footer h4 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; margin-bottom: 1rem; color: var(--lrf-ink); }
footer ul { list-style: none; }
footer li { margin-bottom: 0.5rem; font-size: 14px; }
footer .colophon { font-size: 13px; line-height: 1.6; color: var(--lrf-ink-soft); }
footer .colophon strong { color: var(--lrf-ink); font-weight: 800; }

/* ---------- Toast ---------- */
.toast { position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(140%); background: var(--lrf-ink); color: #fff; padding: 0.75rem 1.4rem; border-radius: var(--r); font-size: 14px; font-weight: 600; box-shadow: var(--shadow-lg); transition: transform 0.25s ease; z-index: 200; }
.toast.show { transform: translateX(-50%) translateY(0); }
.toast .tick { color: var(--lrf-pink); margin-right: 0.4rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .workspace { grid-template-columns: 1fr; }
  .preview-panel { position: static; }
}
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}
@media (max-width: 640px) {
  .export-bar .btn { flex: 1; }
}