/* Card shell: frame, accent band, header, title, eyebrow, subline, toolbar.
 * Source: schreibwerkstatt components/card-form/card-shell.css (editor sync
 * status and inline-editable title removed). What goes INSIDE the card body
 * lives in card-blocks.css. */

@layer components {
/* === Card ===
   Elevated-surface model: white surface, 1px hairline, resting contact
   shadow. The card accent (`--card-accent`, card-accents.css) is a quiet
   signal — eyebrow colour and checked-option tint — not a frame. Cards
   without `card--<key>` stay neutral via the fallbacks. */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  /* `backwards` (not `both`): applies the from-state before start (no flash)
     but leaves no transform behind — a lingering transform would create a
     containing block for position:fixed descendants. */
  animation: cardFadeIn var(--transition-emphasized) backwards;
  transition: box-shadow var(--transition-base);
}
@media (max-width: 600px) {
  .card { padding: var(--space-lg); }
}
@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-10);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  position: relative;
}

@media (max-width: 700px) {
  .card-header { flex-direction: column; align-items: flex-start; }
  /* Anchor a direct-child close button top-right in the column stack. */
  .card-header:has(> .btn-card-close) { padding-right: var(--space-xl); }
  .card-header > .btn-card-close { position: absolute; top: 0; right: 0; margin-left: 0; }
}

.card-title {
  font-weight: var(--fw-semibold);
  font-size: var(--font-size-md);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  overflow-wrap: anywhere;
  min-width: 0;
  text-wrap: balance;
  color: var(--color-text);
}

/* Eyebrow: small tracked caps line ABOVE the .card-title (context label:
   section, parent entity) when the title itself names the function. */
.card-eyebrow {
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  /* The card accent's one visible trace in the header. */
  color: color-mix(in oklab, var(--card-accent, var(--color-subtle)) 75%, var(--color-text));
  line-height: 1;
  overflow-wrap: anywhere;
}

/* Header with subline: title on top, meta line (timestamp, links) below,
   aside (badges + buttons) on the right. */
.card-header--subline { align-items: flex-start; }
.card-header-titlebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-width: 0;
  /* basis 0 (not auto): a max-content subline would otherwise push the
     actions out of the wrapped row. */
  flex: 1 1 0;
}
.card-subline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  line-height: 1.4;
}
.card-header-aside {
  display: flex;
  align-items: center;
  gap: var(--space-14);
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
  margin-left: auto;
}

/* === Card toolbar ===
   Action row in the card BODY (not the header): create/import buttons left,
   optionally an inline filter bar. Vertical spacing is the card rhythm:
   --card-gap-section below, nothing above (the header provides it).
   `.card-actions` is the icon cluster IN the header — different thing. */
.card-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--card-gap-section);
}
.card-toolbar .btn-compact {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Mobile: a header WITH a titlebar stays one line — the actions stay anchored
   top-right, the title column shrinks and wraps. Plain text-button bars
   without a titlebar keep the full-width stack from the base rule. */
@media (max-width: 700px) {
  .card-header:has(.card-header-titlebar) {
    flex-direction: row;
    align-items: flex-start;
    flex-wrap: nowrap;
  }
  /* Floor for the title column so a wide aside cannot squeeze it to 1 char. */
  .card-header:has(.card-header-titlebar) > .card-header-titlebar { min-width: 55%; }
  .card-header:has(.card-header-titlebar) > .card-actions,
  .card-header:has(.card-header-titlebar) > .card-header-aside {
    width: auto;
    flex: 0 1 auto;
    min-width: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
    margin-left: var(--space-md);
  }
  /* Exception: a tab row in the action bar gets its own full line (a scroll
     container next to the 55% floor would leave a ~120px sliver). */
  .card-header:has(.card-header-titlebar):has(> .card-actions > .tabs) {
    flex-wrap: wrap;
  }
  .card-header:has(.card-header-titlebar) > .card-actions:has(> .tabs) {
    flex-basis: 100%;
    justify-content: flex-start;
    margin-left: 0;
  }
}
}