/* Recursive CTE demo layout. Colours and controls come from ../shared/theme.css. */

html,
body { height: 100%; overflow: hidden; }

.app {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-columns: minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 2;
}

.home {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 8px 4px 2px;
  border-radius: 6px;
}
.home:hover { color: var(--ink); background: var(--panel-2); }

.title {
  margin: 0 6px 0 0;
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.group { display: flex; align-items: center; gap: 6px; }
.tools { display: flex; gap: 2px; margin-left: auto; }

.seg-tall { height: 36px; align-items: stretch; }
.seg-tall button { font-size: 14px; padding: 0 12px; }

/* ---------- Main area ---------- */

.main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  min-height: 0;
}
body.no-sidebar .main { grid-template-columns: minmax(0, 1fr) 0; }
body.no-sidebar .sidebar { display: none; }

.stage {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
}
/* ---------- Player ---------- */

.player {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  padding: 10px 16px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.transport { display: flex; align-items: center; gap: 6px; }
.transport .btn { width: 40px; height: 40px; }
.transport .play { width: 48px; height: 48px; border-radius: 50%; }
.transport .play .icon { width: 22px; height: 22px; }

.progress { flex: 1 1 220px; min-width: 180px; }
.progress-label {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 14px;
}
.progress-label span { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.progress-label .queue { color: var(--accent); font-weight: 600; }
.progress-bar { height: 6px; border-radius: 3px; background: var(--line); overflow: hidden; }
#progressFill { height: 100%; width: 0; background: var(--accent); border-radius: 3px; transition: width 0.3s; }

.speed { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; }
.speed input { width: 110px; accent-color: var(--accent); }
.speed output { width: 40px; font-variant-numeric: tabular-nums; color: var(--ink-2); }
/* ---------- Sidebar ---------- */

.sidebar {
  min-height: 0;
  overflow-y: auto;
  border-left: 1px solid var(--line);
  background: var(--panel);
}

.panel { padding: 14px 16px 16px; border-bottom: 1px solid var(--line); }
.panel h2 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.panel h2 span { text-transform: none; letter-spacing: 0; color: var(--ink); margin-left: 4px; }

.step-log {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 30vh;
  overflow-y: auto;
  counter-reset: step;
}
.step-log li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--ink-2);
  cursor: pointer;
}
.step-log li::before {
  counter-increment: step;
  content: counter(step);
  font-weight: 700;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.step-log li:hover { background: var(--panel-2); }
.step-log li.current { background: var(--accent-soft); color: var(--ink); }
.step-log li.current::before { color: var(--accent); }
.step-log li.s-success::before { color: var(--good); }
.step-log li.s-warn::before { color: var(--warn); }
.step-log li.k-read::before { color: var(--warn); }

.pseudo {
  margin: 0;
  padding: 8px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  font: 12.5px/1.6 var(--mono);
}
.pseudo .ln {
  padding: 1px 10px 1px calc(9px + var(--indent, 0ch) + 2ch);
  text-indent: -2ch;
  border-left: 3px solid transparent;
  color: var(--ink-2);
}
.pseudo .ln.on { background: var(--accent-soft); border-left-color: var(--accent); color: var(--ink); font-weight: 650; }
.pseudo .ln .cm { color: var(--muted); font-weight: 400; }
.pseudo .empty { margin: 0; padding: 4px 12px; font-family: var(--font); font-size: 13px; color: var(--muted); }

.note { margin: 0 0 10px; font-size: 12.5px; color: var(--muted); line-height: 1.45; }
.note:last-child { margin: 10px 0 0; }
.note b { color: var(--ink-2); }

/* ---------- Help modal ---------- */

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(10, 14, 22, 0.45);
}
.modal-card {
  position: relative;
  width: min(900px, 100%);
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  padding: 24px 28px;
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.modal-card h2 { margin: 0 0 12px; font-size: 20px; }
.modal-card h3 { margin: 16px 0 6px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.modal-card ul { margin: 0; padding-left: 18px; }
.modal-card li { margin: 4px 0; font-size: 14px; }
.modal-card code { font-family: var(--mono); font-size: 13px; background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }
.modal-close { position: absolute; top: 14px; right: 14px; }
.help-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 0 32px; }
.modal-card table.algos { width: 100%; border-collapse: collapse; margin: 6px 0 0; font-size: 13.5px; }
.algos th, .algos td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.algos th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.algos td:first-child { font-weight: 750; white-space: nowrap; }
.credit { margin: 20px 0 0; padding-top: 14px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.credit b { color: var(--ink-2); }
.keys { border-collapse: collapse; font-size: 14px; }
.keys td { padding: 4px 12px 4px 0; }
.keys td:first-child { white-space: nowrap; }


/* ---------- Drawing area ---------- */

.canvas-wrap {
  --watermark-bottom: 8px;
  --watermark-right: 10px;
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
  padding: 10px 12px;
  overflow: hidden;
  background: var(--bg);
  min-height: 300px;
}

.caption {
  display: flex;
  align-items: center;
  padding: 10px 14px 10px 16px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s;
}
.caption[data-status="success"] { border-left-color: var(--good); }
.caption[data-status="warn"] { border-left-color: var(--warn); }
.caption[data-status="error"] { border-left-color: var(--bad); }
.caption-text { margin: 0; font-size: 16.5px; font-weight: 550; line-height: 1.4; min-height: 2.8em; display: flex; align-items: center; }

.board {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: minmax(0, 44fr) minmax(0, 56fr);
  gap: 10px;
  min-height: 0;
}

.card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  padding: 8px 12px 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}
.card h2 {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.card h2 small { margin-left: auto; font-size: 12px; font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--ink-2); font-variant-numeric: tabular-nums; }

.card-sql { grid-column: 1; grid-row: 1; }
.card-graph { grid-column: 2 / 4; grid-row: 1; }
.card-base { grid-column: 1; grid-row: 2; }
.card-work { grid-column: 2; grid-row: 2; }
.card-res { grid-column: 3; grid-row: 2; }
/* Flow arrows between the three tables */
.card-work::before,
.card-res::before {
  content: "→";
  position: absolute;
  left: -15px;
  top: 50%;
  font-size: 18px;
  font-weight: 700;
  color: var(--muted);
}
.card-work,
.card-res { position: relative; }

/* ---------- SQL ---------- */

.sql {
  flex: 1;
  margin: 0;
  padding: 6px 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  font: 13px/1.55 var(--mono);
}
.sql .ln { padding: 0 10px; border-left: 3px solid transparent; white-space: pre; color: var(--ink-2); transition: background 0.2s; }
.sql .ln.on { background: var(--accent-soft); border-left-color: var(--accent); color: var(--ink); font-weight: 650; }
.tk-k { color: var(--violet); font-weight: 700; }
.tk-s { color: var(--good); }
.tk-n { color: var(--orange); }
.tk-c { color: var(--muted); font-weight: 400; font-style: italic; }

/* ---------- Tables ---------- */

.tbl-wrap { flex: 1; min-height: 0; overflow: auto; padding-bottom: 28px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.tbl th {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 4px 10px;
  text-align: left;
  font: 700 12px/1.4 var(--mono);
  color: var(--muted);
  background: var(--panel);
  border-bottom: 2px solid var(--line-strong);
}
.tbl td { padding: 3px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.tbl td.null { color: var(--muted); font-style: italic; }
.tbl tr { transition: background 0.2s; }
.tbl tr.hit td { background: var(--warn-soft); }
.tbl tr.hit td:first-child { box-shadow: inset 3px 0 0 var(--warn); }
.tbl tr.hot td { background: var(--accent-soft); font-weight: 700; }
.tbl tr.hot td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
.tbl tr.fresh td { background: var(--good-soft); animation: pop 0.55s ease-out; }
.tbl tr.fresh td:first-child { box-shadow: inset 3px 0 0 var(--good); }
.tbl tr.rej td { background: var(--bad-soft); color: var(--bad); text-decoration: line-through; text-decoration-thickness: 1.5px; }
.tbl tr.rej td.rd { text-decoration: none; }
@keyframes pop { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: none; } }
.tbl .rd-h { width: 1%; }

.empty-tbl,
.no-base { margin: 8px 2px; font-size: 13.5px; color: var(--muted); line-height: 1.45; }
.card-base.none h2 small { display: none; }

/* ---------- Round colours ---------- */

.it0 { --c: var(--accent); --cs: var(--accent-soft); }
.it1 { --c: var(--teal); --cs: var(--teal-soft); }
.it2 { --c: var(--violet); --cs: var(--violet-soft); }
.it3 { --c: var(--orange); --cs: var(--orange-soft); }
.it4 { --c: var(--warn); --cs: var(--warn-soft); }
.it5 { --c: var(--good); --cs: var(--good-soft); }

.rd-pill {
  display: inline-block;
  min-width: 22px;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--cs);
  border: 1.5px solid var(--c);
  color: var(--c);
  font-size: 12px;
  font-weight: 750;
  line-height: 18px;
  text-align: center;
}
.rej-tag { font-size: 11.5px; font-weight: 700; color: var(--bad); }

/* ---------- Graph ---------- */

.graph { flex: 1; min-height: 0; width: 100%; font-family: var(--font); }
.graph .node rect { fill: var(--panel-2); stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 4 3; transition: fill 0.25s, stroke 0.25s; }
.graph .node text.nl { text-anchor: middle; dominant-baseline: middle; font-size: 14px; font-weight: 650; fill: var(--muted); }
.graph .node.found rect { fill: var(--cs); stroke: var(--c); stroke-dasharray: none; }
.graph .node.found text.nl { fill: var(--ink); }
.graph .node.hot rect { stroke: var(--ink); stroke-width: 3; }
.graph .node text.nb { text-anchor: end; font-size: 12px; font-weight: 750; fill: var(--bad); }
.graph .edge { stroke: var(--line-strong); stroke-width: 1.6; fill: none; transition: stroke 0.25s; }
.graph .edge.back { stroke-dasharray: 5 4; }
.graph .edge.used { stroke: var(--ink-2); }
.graph .edge.new { stroke: var(--good); stroke-width: 3; }
.graph .edge.rej { stroke: var(--bad); stroke-width: 2.5; stroke-dasharray: 5 4; }
.graph .ah { fill: var(--line-strong); }
.graph .ah-new { fill: var(--good); }
.graph .ah-rej { fill: var(--bad); }

/* ---------- Sidebar bits ---------- */

.legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px 10px;
  font-size: 12.5px;
  color: var(--ink-2);
}
.legend li { display: flex; align-items: center; gap: 7px; }
.legend-1 { grid-template-columns: 1fr; }
.sw { width: 20px; height: 16px; border-radius: 4px; flex: none; border: 1.5px solid var(--line-strong); background: var(--panel); }
.sw-hot { background: var(--accent-soft); border-color: var(--accent); }
.sw-hit { background: var(--warn-soft); border-color: var(--warn); }
.sw-new { background: var(--good-soft); border-color: var(--good); }
.sw-rej { background: var(--bad-soft); border-color: var(--bad); }

.step-log li.s-error::before { color: var(--bad); }

/* ---------- Short screens (projectors) ---------- */

@media (max-height: 820px) and (min-width: 861px) {
  .canvas-wrap { padding: 8px; gap: 8px; }
  .caption { padding: 6px 12px 6px 14px; }
  .caption-text { font-size: 15.5px; min-height: 2.7em; }
  .board { gap: 8px; }
  .card { padding: 6px 10px 8px; }
  .sql { font-size: 12.5px; line-height: 1.4; padding: 4px 0; }
  .tbl { font-size: 13.5px; }
  .tbl td { padding: 2px 10px; }
  .tbl-wrap { padding-bottom: 24px; }
}

/* ---------- Smaller screens ---------- */

@media (max-width: 1100px) {
  .main { grid-template-columns: minmax(0, 1fr) 300px; }
}

@media (max-width: 860px) {
  html, body { overflow: auto; }
  .app { height: auto; min-height: 100vh; }
  .main { grid-template-columns: 1fr; }
  body.no-sidebar .main { grid-template-columns: 1fr; }
  .canvas-wrap { height: auto; }
  .board { grid-template-columns: 1fr; grid-template-rows: none; }
  .card-sql, .card-graph, .card-base, .card-work, .card-res { grid-column: 1; grid-row: auto; }
  .card-graph { min-height: 190px; }
  .card-work::before, .card-res::before { display: none; }
  .sidebar { border-left: 0; border-top: 1px solid var(--line); }
  .help-grid { grid-template-columns: 1fr; }
}