/* ── FOLIO VIEW ── full-page folio renderer styles */

/* ── Back link ── */
.folio-back {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
  padding: 2rem 8vw 0;
  transition: color 0.2s;
}

.folio-back:hover { color: var(--accent); }

/* ── Folio header ── */
.folio-header {
  padding: 2rem 8vw 2.5rem;
  max-width: calc(90ch + 8vw);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.folio-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

/* ── Meta strip ── */
.folio-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.folio-meta-folder {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--grad);
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.folio-meta-type,
.folio-meta-date {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.folio-meta-sep {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--rule);
}

/* ── Brief bullets ── */
.folio-brief {
  list-style: disc;
  padding-left: 1.25rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.folio-brief li {
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.55);
}

/* ── Folio body (prose column) ── */
.folio-body {
  max-width: 90ch;
  margin: 0 auto;
  padding: 3rem 8vw;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* ── Table of contents ── */
.folio-toc {
  max-width: calc(90ch + 8vw);
  margin: 0 auto;
  padding: 2rem 8vw 2.5rem;
  box-sizing: border-box;
  width: 100%;
}

.folio-toc-heading {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 1rem;
}

.folio-toc-list {
  list-style: decimal;
  margin: 0;
  padding-left: 1.5em;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.folio-toc-item a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

.folio-toc-item a:hover { opacity: 0.7; }

/* ── Element: heading ── */
.folio-heading {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Element: text ── */
.folio-text {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.8;
}

.folio-text-block {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.folio-text-label {
  font-family: var(--serif);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

/* ── Element: image ── */
.folio-figure {
  margin: 0;
  width: 100%;
}

.folio-figure img {
  width: 100%;
  display: block;
}

.folio-figure figcaption {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 0.6rem;
}

/* ── Element: pdf ── */
.folio-pdf {
  margin: 0;
  width: 100%;
}

.folio-pdf-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.6rem;
}

.folio-pdf-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  transition: opacity 0.2s;
}

.folio-pdf-label:hover { opacity: 0.7; }

.folio-pdf-open {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}

.folio-pdf-open:hover { opacity: 0.7; }

.folio-pdf iframe {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--rule);
  display: block;
}

.folio-pdf.portrait iframe {
  aspect-ratio: 8.5 / 12;
}

/* ── Element: video ── */
.folio-video {
  margin: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
}

.folio-video-label {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.folio-video iframe,
.folio-video video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
  display: block;
}

/* ── Element: code ── */
pre {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 0;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-left: 3px solid var(--grad-a);
}

pre code {
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.65;
  white-space: pre;
}

/* ── Element: divider ── */
.folio-rule {
  border: none;
  border-top: 1px solid var(--rule);
  width: 80%;
  margin: 0.5rem auto;
}

/* ── Element: link ── */
.folio-link {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: #fff;
  background: var(--grad);
  border: none;
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.25);
}

.folio-link:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 28px rgba(124, 58, 237, 0.42);
}

/* ── Not found state ── */
.not-found {
  padding: 8rem 4vw;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.not-found__label {
  font-family: var(--serif);
  font-size: 6rem;
  font-weight: 900;
  color: var(--rule);
  line-height: 1;
}

.not-found__msg {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.not-found__back {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  margin-top: 0.5rem;
}

.not-found__back:hover { text-decoration: underline; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .folio-header { padding: 1.5rem 6vw 2rem; }
  .folio-body { padding: 2rem 6vw; }
}

/* ── Element: layout ── */
.folio-layout {
  display: grid;
  gap: 1rem;
  width: 100%;
}

.folio-layout-cell {
  display: flex;
  flex-direction: column;
  min-width: 0; /* prevents grid blowout from wide pre/img children */
}

.folio-layout--2col {
  grid-template-columns: 1fr 1fr;
}

.folio-layout--3col {
  grid-template-columns: 1fr 1fr 1fr;
}

.folio-layout--2col-split {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
}

/* Label spans all columns */
.folio-layout-label {
  grid-column: 1 / -1;
  margin: 0;
}

/* First cell spans both rows — the "big" left pane */
.folio-layout--2col-split > .folio-layout-cell:first-child {
  grid-row: 1 / 3;
}

@media (max-width: 768px) {
  .folio-layout {
    grid-template-columns: 1fr !important;
  }

  .folio-layout--2col-split > .folio-layout-cell:first-child {
    grid-row: auto;
  }
}

/* ── Element: reference ── */
.folio-reference {
  border: 1px solid rgba(124, 58, 237, 0.25);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 1.5rem;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.folio-reference--loading {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(124, 58, 237, 0.2);
  background: rgba(255, 255, 255, 0.05);
  padding: 1.5rem;
  border-radius: var(--radius);
}

.folio-reference--error {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  background: rgba(255, 255, 255, 0.05);
  padding: 1.5rem;
  border-radius: var(--radius);
}

/* Header row: meta strip left, open link right */
.folio-reference-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Override folio-meta margin-bottom inside the card */
.folio-reference-meta {
  margin-bottom: 0;
}

.folio-reference-open {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: opacity 0.2s;
}

.folio-reference-open:hover {
  opacity: 0.7;
}

.folio-reference-title {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.folio-reference-brief li {
  color: rgba(255, 255, 255, 0.5);
}

/* Preview area for single-element folios */
.folio-reference-preview {
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
}

/* ── Legacy format notice ── */
.folio-format-notice {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  border-left: 3px solid var(--grad-a);
  padding: 0.65rem 0.9rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}