/* shared/previews.css — link/image preview card styles
   Uses design-system tokens with safe fallbacks for both dark (dev) and light (personal) themes.
   Link: <link rel="stylesheet" href="/shared/previews.css">
*/

/* ── Card container ─────────────────────────────────────────────────────── */
.ak-preview-card {
  position: absolute;
  z-index: 9999;
  display: none; /* shown via JS */

  max-width: 360px;
  min-width: 200px;
  width: max-content;

  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border, rgba(128, 128, 128, 0.25));

  background: var(--bg-elevated, #ffffff);
  color: var(--fg1, #111111);

  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.14),
    0 1px 4px  rgba(0, 0, 0, 0.08);

  font-family: var(--font-display, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif);
  font-size: 0.85rem;
  line-height: 1.45;

  /* Clip long content */
  word-break: break-word;
  overflow-wrap: anywhere;

  /* Subtle entrance (respects prefers-reduced-motion below) */
  animation: ak-card-in 0.12s ease-out both;
}

@keyframes ak-card-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .ak-preview-card {
    animation: none;
  }
}

/* ── Type badge ──────────────────────────────────────────────────────────── */
.ak-preview-card__type {
  display: inline-block;
  font-family: var(--font-mono, "JetBrains Mono", "Fira Mono", "Courier New", monospace);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 1px 6px;
  border-radius: 4px;
  margin-bottom: 7px;

  background: var(--accent-muted, rgba(100, 100, 255, 0.12));
  color: var(--accent, #4a7fff);
  border: 1px solid var(--accent-border, rgba(100, 100, 255, 0.25));
}

.ak-preview-card__type--wiki  { color: var(--fg2, #555); background: var(--bg-subtle, rgba(128,128,128,0.1)); border-color: var(--border, rgba(128,128,128,0.2)); }
.ak-preview-card__type--arxiv { color: #c0392b; background: rgba(192,57,43,0.08); border-color: rgba(192,57,43,0.25); }
.ak-preview-card__type--file  { color: var(--fg2, #555); background: var(--bg-subtle, rgba(128,128,128,0.1)); border-color: var(--border, rgba(128,128,128,0.2)); }

/* ── Thumbnail ───────────────────────────────────────────────────────────── */
.ak-preview-card__thumb {
  display: block;
  max-width: 100%;
  max-height: 140px;
  width: auto;
  height: auto;
  border-radius: 5px;
  margin-bottom: 8px;
  object-fit: cover;
}

/* ── Title ───────────────────────────────────────────────────────────────── */
.ak-preview-card__title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--fg1, #111111);
  margin-bottom: 4px;
  line-height: 1.3;
}

/* ── Author (arXiv) ──────────────────────────────────────────────────────── */
.ak-preview-card__author {
  font-size: 0.76rem;
  color: var(--fg2, #666666);
  margin-bottom: 5px;
  font-style: italic;
}

/* ── Excerpt ─────────────────────────────────────────────────────────────── */
.ak-preview-card__excerpt {
  font-size: 0.80rem;
  color: var(--fg2, #555555);
  margin-bottom: 5px;
  line-height: 1.5;

  /* Clamp at 4 lines */
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Post metadata ───────────────────────────────────────────────────────── */
.ak-preview-card__meta {
  font-size: 0.74rem;
  color: var(--fg3, #888888);
  margin-top: 4px;
}

.ak-preview-card__tags {
  margin-top: 5px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.ak-preview-card__tag {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.68rem;
  padding: 1px 5px;
  border-radius: 3px;
  background: var(--bg-subtle, rgba(128,128,128,0.1));
  color: var(--fg2, #555);
  border: 1px solid var(--border, rgba(128,128,128,0.2));
}

/* ── Source line ─────────────────────────────────────────────────────────── */
.ak-preview-card__source {
  font-family: var(--font-mono, "JetBrains Mono", "Fira Mono", "Courier New", monospace);
  font-size: 0.70rem;
  color: var(--fg3, #999999);
  margin-top: 6px;
  padding-top: 5px;
  border-top: 1px solid var(--border, rgba(128,128,128,0.15));
}

/* ── Image zoom variant ──────────────────────────────────────────────────── */
.ak-preview-card.ak-preview-card--image-zoom {
  padding: 6px;
  max-width: min(480px, 90vw);
  min-width: unset;
  background: var(--bg-elevated, #ffffff);
}

.ak-preview-card--image > .ak-preview-card--image img,
.ak-preview-card.ak-preview-card--image-zoom img {
  display: block;
  max-width: 100%;
  max-height: 320px;
  width: auto;
  height: auto;
  border-radius: 5px;
  object-fit: contain;
  margin: 0 auto;
}

.ak-preview-card__caption {
  font-size: 0.74rem;
  color: var(--fg2, #666666);
  text-align: center;
  margin-top: 5px;
  font-style: italic;
}

/* ── "has-preview" link decoration ──────────────────────────────────────── */
a.has-preview {
  text-decoration-style: dotted;
  text-underline-offset: 2px;
  text-decoration-color: var(--accent, currentColor);
}

a.has-preview:hover,
a.has-preview:focus {
  text-decoration-style: solid;
}

/* ── Dark theme adjustments ──────────────────────────────────────────────── */
/* When the dev dark theme is active the custom properties already
   provide the right values, so no extra overrides are needed in most cases.
   The fallbacks above (#ffffff / #111111) are for the personal light theme.
   Explicit dark-mode fallbacks via media query for system-dark users: */
@media (prefers-color-scheme: dark) {
  .ak-preview-card {
    background: var(--bg-elevated, #1e1e2e);
    color: var(--fg1, #e0e0e0);
    box-shadow:
      0 4px 20px rgba(0, 0, 0, 0.45),
      0 1px 4px  rgba(0, 0, 0, 0.3);
  }

  .ak-preview-card__title  { color: var(--fg1, #e8e8f0); }
  .ak-preview-card__author { color: var(--fg2, #aaaacc); }
  .ak-preview-card__excerpt { color: var(--fg2, #9999bb); }
  .ak-preview-card__meta   { color: var(--fg3, #777799); }
  .ak-preview-card__source { color: var(--fg3, #666688); }
}