/* deep-dive.css
 *
 * Styling for the Deep Dive panel. Uses only the existing CSS variables
 * from styles.css — no new color tokens, no new spacing scales.
 *
 * The markdown-content rules deliberately mirror existing patterns:
 *   - .dd-md table  → matches .cp-table (alternating rows, --raised bg)
 *   - .dd-md pre    → matches .term-body (monospace, --input bg, scroll-x)
 *   - .dd-md blockquote → matches the amber-hint pattern (.cp-block-hint)
 */

/* ───── Trigger button ───── */
.dd-trigger {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--fg-dim);
  padding: 8px 14px;
  border-radius: var(--r);
  font: inherit; font-size: 12px;
  cursor: pointer;
  transition: all 90ms;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.dd-trigger:hover { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-bg); }
.dd-trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.dd-trigger .dd-trigger-icon { color: var(--cyan); font-size: 13px; }
.dd-trigger .dd-trigger-meta { color: var(--fg-mute); font-size: 10px; margin-left: 4px; }

/* ───── Panel container (in-flow expansion below the row) ───── */
.dd-panel {
  margin-top: 14px;
  background: var(--input);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r-md);
  overflow: hidden;
  animation: dd-expand 220ms ease-out;
}
@media (prefers-reduced-motion: reduce) {
  .dd-panel { animation: none; }
}
@keyframes dd-expand {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dd-panel-head {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.dd-panel-eye {
  font-size: 10px; color: var(--cyan);
  text-transform: uppercase; letter-spacing: 0.1em;
  font-weight: 600;
}
.dd-panel-title {
  font-size: 13px; color: var(--fg-hi); font-weight: 600;
  flex: 1;
  /* prevent overflow when concept title is very long */
  min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.dd-panel-close {
  background: transparent; border: 0; color: var(--fg-mute);
  font: inherit; font-size: 14px; cursor: pointer;
  padding: 2px 6px; border-radius: var(--r);
}
.dd-panel-close:hover { color: var(--fg-hi); background: var(--raised); }
.dd-panel-close:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ───── Loading / error states ───── */
.dd-state {
  padding: 24px 20px;
  text-align: center;
  color: var(--fg-mute);
  font-size: 12px;
}
.dd-state-err { color: var(--red); }

/* ───── Markdown content ───── */
.dd-md {
  padding: 18px 22px 26px;
  color: var(--fg);
  font-size: 13.5px;
  line-height: 1.65;
  /* anchors the typography to the existing concept-page body */
  max-width: 760px;
}

.dd-md h1, .dd-md h2, .dd-md h3, .dd-md h4 {
  color: var(--fg-hi); font-weight: 700; letter-spacing: 0.01em;
  line-height: 1.3;
  margin: 22px 0 8px;
}
.dd-md h1 { font-size: 18px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.dd-md h2 { font-size: 15px; padding-top: 10px; border-top: 1px solid var(--border); margin-top: 26px; }
.dd-md h3 { font-size: 13.5px; color: var(--cyan); }
.dd-md h4 { font-size: 12.5px; color: var(--fg-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.dd-md h1:first-child, .dd-md h2:first-child, .dd-md h3:first-child {
  margin-top: 0; padding-top: 0; border-top: 0;
}

.dd-md p  { margin: 8px 0; color: var(--fg-dim); }
.dd-md hr {
  border: 0; height: 1px; background: var(--border); margin: 22px 0;
}

.dd-md ul, .dd-md ol { padding-left: 22px; margin: 8px 0; }
.dd-md li { margin: 3px 0; color: var(--fg-dim); }

.dd-md strong { color: var(--fg-hi); font-weight: 700; }
.dd-md em     { color: var(--fg); font-style: italic; }

.dd-md a { color: var(--cyan); text-decoration: underline; text-underline-offset: 2px; }
.dd-md a:hover { color: var(--green); }

/* Inline code — matches the existing .q-stem code style */
.dd-md code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 2px;
  color: var(--cyan);
  font-size: 0.92em;
}

/* Fenced code blocks — match .term-body */
.dd-md pre {
  background: var(--input);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px 14px;
  margin: 10px 0;
  font-size: 12px;
  line-height: 1.6;
  white-space: pre;
  overflow-x: auto;
  color: var(--fg);
}
.dd-md pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* Tables — match .cp-table */
.dd-md table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  margin: 10px 0;
}
.dd-md th {
  background: var(--raised);
  color: var(--fg-dim);
  text-align: left;
  padding: 7px 10px;
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.dd-md td {
  padding: 7px 10px;
  border: 1px solid var(--border);
  color: var(--fg-dim);
  vertical-align: top;
}
.dd-md tr:nth-child(even) td { background: var(--raised); }

/* Blockquotes — match the amber-hint pattern */
.dd-md blockquote {
  margin: 12px 0;
  padding: 10px 14px;
  background: oklch(0.82 0.14 80 / 0.07);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  color: var(--fg);
}
.dd-md blockquote p { margin: 4px 0; color: var(--fg); }
.dd-md blockquote strong { color: var(--amber); }

/* Images — guides don't currently use them, but keep them sane if added */
.dd-md img { max-width: 100%; border-radius: var(--r); border: 1px solid var(--border); }