/* ── File viewer page ───────────────────────────────────────────────────────── */

.fv-page {
  flex-direction: column;
  min-height: 0;
}

.fv-title {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.95rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0.9;
  margin: 0;
  /* RTL flips the ellipsis to the *start*, so a long path keeps its tail (the
     filename) visible — `<bdi>` around the path preserves left-to-right order. */
  direction: rtl;
  text-align: left;
  flex: 1 1 auto;
  min-width: 0;
}

.fv-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0 !important;
  border-radius: 6px !important;
  flex-shrink: 0;
}

.fv-body {
  flex: 1 1 auto;
  overflow: auto;
  position: relative;
  min-height: 0;
}

.fv-state {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
}

/* ── Markdown preview ────────────────────────────────────────────────────────── */

.fv-md {
  max-width: 100%;
  padding: 1.5rem 2rem;
  line-height: 1.6;
  font-size: 0.8rem;
}

.fv-md > *:first-child { margin-top: 0; }
.fv-md > *:last-child  { margin-bottom: 0; }

.fv-md h1,
.fv-md h2,
.fv-md h3,
.fv-md h4 { margin: 1.2rem 0 0.5rem; line-height: 1.3; }
.fv-md h1 { font-size: 1.5em; }
.fv-md h2 { font-size: 1.3em; }
.fv-md h3 { font-size: 1.15em; }
.fv-md h4 { font-size: 1em; }

.fv-md p      { margin: 0.5rem 0; }
.fv-md ul,
.fv-md ol     { margin: 0.5rem 0; padding-left: 1.5rem; }
.fv-md li     { margin: 0.2rem 0; }

.fv-md code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: var(--bs-secondary-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}

.fv-md pre {
  background: var(--bs-secondary-bg);
  padding: 0.85rem 1rem;
  border-radius: 6px;
  overflow: auto;
  margin: 0.75rem 0;
}
.fv-md pre code { background: none; padding: 0; font-size: inherit; }

.fv-md blockquote {
  border-left: 3px solid var(--bs-border-color);
  margin: 0.75rem 0;
  padding: 0.25rem 0 0.25rem 1rem;
  color: var(--bs-secondary-color);
}

.fv-md hr  { border: none; border-top: 1px solid var(--bs-border-color); margin: 1.25rem 0; }
.fv-md a   { color: #6366f1; text-decoration: underline; }
.fv-md strong { font-weight: 700; }
.fv-md em     { font-style: italic; }

.fv-md img  { max-width: 100%; border-radius: 4px; }

.fv-md table {
  border-collapse: collapse;
  margin: 0.75rem 0;
}
.fv-md th,
.fv-md td {
  border: 1px solid var(--bs-border-color);
  padding: 0.4rem 0.6rem;
}

/* ── Code/text preview ───────────────────────────────────────────────────────── */

.fv-code {
  margin: 0;
  padding: 1.25rem 1.5rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  white-space: pre;
  overflow: auto;
  background: var(--bs-secondary-bg);
  color: var(--bs-body-color);
  min-height: 100%;
  tab-size: 4;
}

/* Header action buttons (mode toggle + download) sit in one row. */
.fv-header-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

/* ── PDF preview ─────────────────────────────────────────────────────────────── */

.fv-pdf {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* ── HTML live preview ───────────────────────────────────────────────────────── */

/* Rendered in an origin-isolated iframe (srcdoc + sandbox="allow-scripts").
   White canvas so pages that don't set their own background stay legible. */
.fv-html {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  background: #fff;
}

/* ── LaTeX compile-error banner (shown above the source fallback) ─────────────── */

.fv-compile-error {
  margin: 0;
  padding: 0.5rem 1.5rem;
  background: var(--bs-warning-bg-subtle, #fff3cd);
  border-bottom: 1px solid var(--bs-border-color);
  font-size: 0.85rem;
}
.fv-compile-error > summary {
  cursor: pointer;
  user-select: none;
  padding: 0.25rem 0;
}
.fv-compile-error > pre {
  margin: 0.5rem 0 0.75rem;
  padding: 0.75rem 1rem;
  max-height: 40vh;
  overflow: auto;
  background: var(--bs-secondary-bg);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8rem;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Image preview ───────────────────────────────────────────────────────────── */

.fv-image-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--bs-secondary-bg);
}

.fv-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

/* SVG renders in a sandboxed iframe; the SVG root fills the iframe viewport and
   scales to its viewBox. White canvas so light-on-transparent SVGs stay legible. */
.fv-svg {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}