/* Host-site overrides for cast-bootstrap5 tokens. */

/* Saira aus dem Portfolio (dieselbe Datei) statt Inter als Schrift der Hauptseite. */
@font-face {
  font-family: "Saira";
  src: url("../portfolio/fonts/saira-variable.a78743a62eef.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: "Saira";
  src: url("../portfolio/fonts/saira-italic-variable.2db8bf6a01f0.woff2") format("woff2");
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --cast-font-sans: "Saira", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bs-body-font-family: var(--cast-font-sans);
  /* Creme aus dem Portfolio statt Weiß: im hellen Theme der Grundton, aus dem alle
     übrigen Töne abgeleitet sind (gleicher Farbton, nur heller oder dunkler); im dunklen
     Theme die Schrift. */
  --site-creme: #f0ece2;
  --bs-body-bg: var(--site-creme);
  --bs-body-color: var(--cast-text);
  --cast-bg: var(--site-creme);
  --cast-bg-alt: oklch(from var(--site-creme) calc(l - 0.035) calc(c + 0.004) h);
  --cast-surface: oklch(from var(--site-creme) calc(l + 0.045) calc(c * 0.5) h);

  --cast-text: oklch(from var(--site-creme) 0.25 0.012 h);
  --cast-text-muted: oklch(from var(--site-creme) 0.48 0.02 h);
  --cast-text-light: oklch(from var(--site-creme) 0.72 0.02 h);

  --cast-accent: #0066cc;
  --cast-accent-hover: #004c99;
  --cast-accent-light: color-mix(in oklab, var(--cast-accent) 12%, var(--site-creme));
  --cast-link-on-white: #004c99;

  /* Kanten kräftig genug, dass helle Flächen unter der Leinentextur nicht wegsuppen. */
  --cast-border: oklch(from var(--site-creme) calc(l - 0.11) calc(c + 0.01) h);
  --cast-border-strong: oklch(from var(--site-creme) calc(l - 0.16) calc(c + 0.012) h);

  --cast-code-bg: var(--cast-bg-alt);
  --cast-code-text: var(--cast-text);

  /* Höhenlinien im Blog-Kopf: warmes Dunkel des Grundtons (Deckkraft setzt das Skript). */
  --site-topo-line: oklch(from var(--site-creme) 0.35 0.04 h);

  --cast-modal-backdrop: rgba(0, 0, 0, 0.85);
  --cast-gallery-body-bg: rgba(240, 236, 226, 0.8);
  --cast-gallery-header-bg: var(--site-creme);
  --cast-gallery-footer-bg: var(--site-creme);
}

[data-bs-theme="dark"] {
  --bs-body-bg: #0f172a;
  --bs-body-color: var(--site-creme);
  --bs-emphasis-color: var(--site-creme);
  --bs-heading-color: var(--site-creme);
  --cast-bg: #0f172a;
  --cast-bg-alt: #1e293b;
  --cast-surface: #283548;

  --cast-text: var(--site-creme);
  --cast-text-muted: #94a3b8;
  --cast-text-light: #64748b;

  --cast-accent: #38bdf8;
  --cast-accent-hover: #0ea5e9;
  --cast-accent-light: #0b1f34;
  --cast-link-on-white: #38bdf8;

  /* Eine Stufe heller als zuvor (#334155/#475569): Kanten bleiben unter der Leinentextur sichtbar. */
  --cast-border: #475569;
  --cast-border-strong: #64748b;

  --cast-code-bg: #1e293b;
  --cast-code-text: var(--site-creme);

  --site-topo-line: #38bdf8;

  --cast-modal-backdrop: rgba(0, 0, 0, 0.85);
  --cast-gallery-body-bg: rgba(15, 23, 42, 0.9);
  --cast-gallery-header-bg: rgba(40, 53, 72, 1);
  --cast-gallery-footer-bg: rgba(40, 53, 72, 1);
}

/* Kopfleiste: deckender und mit voller Kante (das Theme-Paket setzt sie auf 30 %, das
   verschwindet unter der Leinentextur). */
.navbar-sticky {
  background: color-mix(in srgb, var(--cast-surface) 85%, transparent);
  border-bottom-color: var(--cast-border);
}

/* Leinentextur aus dem Portfolio über der ganzen Seite (dieselbe Grafik). Hell dunkelt sie
   per multiply ab; dunkel wird sie invertiert und hellt per screen auf, sodass die feinen
   Linien in beiden Themes gleich wirken. Sie liegt über Inhalt und Kopfleiste (1020/1030),
   aber unter Theme-Umschalter, Offcanvas, Modals und Suchdialog (ab 1040): Fotos in der
   Galerie und Suchergebnisse bleiben unverfälscht. */
.linen {
  position: fixed;
  z-index: 1035;
  inset: 0;
  pointer-events: none;
  background-image: url("../images/linen.c752395ff8b1.png");
  background-repeat: repeat;
  /* Größe wie in Jochens Lebenslauf (django-resume, Theme „plain“): 400er-Kachel auf 560px. */
  background-size: 560px;
  mix-blend-mode: multiply;
  /* Auf der Hauptseite etwas zurückgenommen (im Portfolio voll). */
  opacity: 0.6;
}

[data-bs-theme="dark"] .linen {
  filter: invert(1);
  mix-blend-mode: screen;
}

@media print {
  .linen { display: none; }
}

/* Linienfarbe der Höhenlinien (liest das Skript im Blog-Kopf). */
.cast-hero canvas {
  color: var(--site-topo-line);
}

/* Search modal contrast and palette alignment */
.cast-search-overlay {
  background: var(--cast-modal-backdrop);
}

.cast-search-modal {
  background: var(--cast-surface);
}

.cast-search-modal-close,
.cast-btn-clear {
  color: var(--cast-text-muted);
}

[data-bs-theme="dark"] .cast-search-modal-close,
[data-bs-theme="dark"] .cast-btn-clear {
  color: #a8b3c0;
}

[data-bs-theme="dark"] .cast-btn-search,
[data-bs-theme="dark"] .cast-ordering-pills .tag-pill.active {
  color: #0f172a;
}

/* Hero typography from prototype */
.cast-hero .blog-title {
  font-size: clamp(2.5rem, 5vw, var(--s4));
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--s-2);
  color: var(--cast-text);
}

[data-bs-theme="dark"] .cast-hero .blog-title {
  color: var(--site-creme);
}

.cast-hero .blog-title .tilde {
  font-family: var(--cast-font-mono);
  font-weight: 400;
  opacity: 0.5;
}

.cast-hero .intro.lead {
  font-size: var(--s1);
  line-height: 1.5;
  margin-top: var(--s-1);
  font-style: italic;
  color: var(--cast-text-muted);
}

[data-bs-theme="dark"] .cast-hero .intro.lead {
  color: #94a3b8;
}

.cast-hero .intro.lead strong,
.cast-hero .intro.lead b {
  font-style: normal;
  font-weight: 600;
  color: var(--cast-text);
}

[data-bs-theme="dark"] .cast-hero .intro.lead strong,
[data-bs-theme="dark"] .cast-hero .intro.lead b {
  color: var(--site-creme);
}

.cast-hero .intro.lead p {
  margin-bottom: 0;
}

.post-card .post-card-title {
  font-size: 1.9rem;
  font-weight: var(--cast-font-weight-bold);
  line-height: 1.18;
}

/* Weeknote link collections keep the old heading + ul rhythm with structured metadata. */
:is(.post-body, .post-card-excerpt) .weeknote-links {
  margin-block: var(--s1);
  --weeknote-link-description-color: color-mix(in srgb, var(--cast-text) 92%, var(--cast-text-muted));
}

:is(.post-body, .post-card-excerpt) .weeknote-link-heading {
  margin-block-end: var(--s-2);
}

.post-card .post-card-excerpt-label,
.post-card .post-card-excerpt .weeknote-link-heading,
.post-card .post-card-excerpt :is(h2, h3, h4, h5, h6),
.post-card .post-card-excerpt :is(.block-paragraph, .block-heading) :is(h2, h3, h4, h5, h6) {
  color: var(--cast-text-muted);
  color: color-mix(in srgb, var(--cast-text) 72%, var(--cast-text-muted));
  font-size: 1.2rem;
  font-weight: var(--cast-font-weight-bold);
  line-height: 1.3;
  margin-block: var(--s1) var(--s-2);
}

:is(.post-body, .post-card-excerpt) .weeknote-link-list {
  padding-inline-start: 1.25rem;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-item {
  margin-block: 0.75rem;
  padding-inline-start: 0.1rem;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-head {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.55rem;
  margin: 0;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-title {
  font-weight: 500;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-source {
  color: var(--cast-text-muted);
  font-size: 0.9em;
  white-space: nowrap;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-source a {
  color: inherit;
  text-decoration-color: currentColor;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-description {
  color: var(--weeknote-link-description-color);
  font-size: 0.96em;
  line-height: 1.55;
  margin-block-start: 0.1rem;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-description p {
  margin: 0;
}

:is(.post-body, .post-card-excerpt) .weeknote-link-description p + p {
  display: block;
  margin-block-start: 0.35rem;
}