/**
 * Knowledge Base — content blocks
 *
 * The typographic system of an article: paragraphs, headings, lists, process
 * steps, callouts, quotes, figures, video frames, link cards and dividers.
 * Loaded once and used by both surfaces that show an article — the reader
 * overlay and the composer's preview — so a block cannot look different
 * depending on who is looking at it.
 */

/* ========================================
   TEXT & HEADINGS
   ======================================== */

.kbase-block-text {
  margin: 0;
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

/* Editorial drop cap on the opening paragraph — only when the article actually
   opens with prose, which the :first-child guard ensures. */
.kbase-reader-body > .kbase-block-text:first-child::first-letter {
  float: left;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-4xl);
  line-height: 0.9;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin: var(--spacing-1) var(--spacing-2) 0 0;
}

.kbase-block-heading {
  position: relative;
  margin: var(--spacing-4) 0 0;
  font-family: var(--font-family-primary);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
}

.kbase-block-heading--h2 {
  padding-top: var(--spacing-4);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

/* The accent rule marks a new chapter without adding another line of chrome. */
.kbase-block-heading--h2::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: var(--spacing-8);
  height: 2px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
}

.kbase-block-heading--h3 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.kbase-block-heading:first-child {
  margin-top: 0;
  padding-top: 0;
}

.kbase-block-heading:first-child::before {
  display: none;
}

/* ========================================
   LISTS
   ======================================== */

/* base.css strips list markers globally; article lists want them back. Flex
   would take them away again: a flex item is blockified and loses its marker. */
.kbase-block-list {
  margin: 0;
  padding-left: var(--spacing-5);
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
}

.kbase-block-list li + li {
  margin-top: var(--spacing-2);
}

.kbase-block-list.is-bulleted {
  list-style: disc;
}

.kbase-block-list.is-ordered {
  list-style: decimal;
}

.kbase-block-list li::marker {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

/* ========================================
   PROCESS STEPS
   ======================================== */

.kbase-block-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.kbase-block-step {
  position: relative;
  display: flex;
  gap: var(--spacing-4);
}

/* Connector between the numerals, so the sequence reads as one path. */
.kbase-block-step:not(:last-child)::before {
  content: '';
  position: absolute;
  top: var(--spacing-8);
  left: calc(var(--spacing-4) - 1px);
  bottom: calc(-1 * var(--spacing-4));
  width: 2px;
  background: var(--color-primary-100);
}

.kbase-block-step-index {
  flex-shrink: 0;
  width: var(--spacing-8);
  height: var(--spacing-8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--gradient-navy-surface);
  color: var(--color-white);
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.kbase-block-step-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  padding-top: var(--spacing-1);
}

.kbase-block-step-title {
  margin: 0;
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.kbase-block-step-text {
  margin: 0;
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  white-space: pre-wrap;
}

/* ========================================
   CALLOUTS
   ======================================== */

.kbase-block-callout {
  display: flex;
  gap: var(--spacing-3);
  padding: var(--spacing-4);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--kbase-callout-hue);
  background: var(--kbase-callout-tint);
}

.kbase-block-callout--info {
  --kbase-callout-hue: var(--color-info);
  --kbase-callout-tint: var(--color-info-light);
}

.kbase-block-callout--success {
  --kbase-callout-hue: var(--color-success);
  --kbase-callout-tint: var(--color-success-light);
}

.kbase-block-callout--warning {
  --kbase-callout-hue: var(--color-warning);
  --kbase-callout-tint: var(--color-warning-light);
}

.kbase-block-callout--danger {
  --kbase-callout-hue: var(--color-error);
  --kbase-callout-tint: var(--color-error-light);
}

.kbase-block-callout-icon {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--kbase-callout-hue);
}

.kbase-block-callout-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.kbase-block-callout-label {
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--kbase-callout-hue);
}

.kbase-block-callout-text {
  margin: 0;
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
  white-space: pre-wrap;
}

/* ========================================
   QUOTE
   ======================================== */

.kbase-block-quote {
  margin: 0;
  padding: var(--spacing-1) 0 var(--spacing-1) var(--spacing-5);
  border-left: 3px solid var(--color-accent);
}

.kbase-block-quote blockquote {
  margin: 0;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-md);
  font-style: italic;
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
}

.kbase-block-quote figcaption {
  margin-top: var(--spacing-2);
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--color-slate-text-muted);
}

/* ========================================
   FIGURES & VIDEO
   ======================================== */

.kbase-block-figure,
.kbase-block-video {
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.kbase-block-figure img {
  display: block;
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  background: var(--color-light-gray);
}

.kbase-block-video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-primary-deep);
}

.kbase-block-video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.kbase-block-figure figcaption,
.kbase-block-video figcaption {
  padding: var(--spacing-2) var(--spacing-4);
  font-family: var(--font-family-secondary);
  font-size: var(--font-size-xs);
  color: var(--color-slate-text-muted);
  background: var(--color-off-white);
  border-top: 1px solid var(--color-border-light);
}

/* ========================================
   LINK CARD
   ======================================== */

.kbase-block-link {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  padding: var(--spacing-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  text-decoration: none;
  box-shadow: var(--shadow-xs);
  transition:
    transform var(--duration-200) var(--ease-out),
    box-shadow var(--duration-200) var(--ease-in-out),
    border-color var(--duration-200) var(--ease-in-out);
}

.kbase-block-link:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-card-hover);
}

.kbase-block-link:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.kbase-block-link-icon {
  flex-shrink: 0;
  width: var(--spacing-10);
  height: var(--spacing-10);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--portal-tint-blue);
  color: var(--portal-hue-blue);
}

.kbase-block-link-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-0-5);
  font-family: var(--font-family-secondary);
  min-width: 0;
}

.kbase-block-link-label {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.kbase-block-link-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.kbase-block-link-host {
  font-size: var(--font-size-xs);
  color: var(--color-slate-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========================================
   DIVIDER
   ======================================== */

.kbase-block-divider {
  position: relative;
  height: 1px;
  margin: var(--spacing-4) 0;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.kbase-block-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--spacing-2);
  height: var(--spacing-2);
  transform: translate(-50%, -50%) rotate(45deg);
  background: var(--color-accent);
}

/* ========================================
   RESPONSIVE & MOTION
   ======================================== */

@media (max-width: 600px) {
  .kbase-block-link {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kbase-block-link:hover {
    transform: none;
  }
}

/* ========================================
   FEINSCHLIFF: LESE-TYPOGRAFIE
   ======================================== */

/* Prose avoids ragged line endings where the engine supports it. */
.kbase-block-text,
.kbase-block-callout-text,
.kbase-block-step-text {
  text-wrap: pretty;
}

.kbase-block-heading {
  text-wrap: balance;
}

/* Quote opens with a German low quotation mark as a quiet editorial cue. */
.kbase-block-quote blockquote::before {
  content: '\201E';
  display: block;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-3xl);
  font-style: normal;
  line-height: 0.4;
  margin-bottom: var(--spacing-2);
  color: var(--color-accent);
}

/* Attribution reads as a byline: em dash before the name. */
.kbase-block-quote figcaption::before {
  content: '\2014\00A0';
  color: var(--color-accent-dark);
}

/* Step numerals align even past step 9. */
.kbase-block-step-index {
  font-variant-numeric: tabular-nums;
}

/* Ordered-list numerals align with each other. */
.kbase-block-list.is-ordered {
  font-variant-numeric: tabular-nums;
}