/* KI-Buch-Archive — nüchtern, lesbar, mobil tauglich */

:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --text: #1a1f2e;
  --muted: #5a6170;
  --border: #e2e0da;
  --navy: #1e3a5f;
  --navy-hover: #152a45;
  --teal: #0d6b6b;
  --teal-soft: #e6f3f3;
  --burgundy: #7a2430;
  --shadow: 0 1px 2px rgba(26, 31, 46, 0.06), 0 4px 16px rgba(26, 31, 46, 0.06);
  --radius: 10px;
  --max: 42rem;
  --font: "Charter", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 112.5%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

a {
  color: var(--navy);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--teal);
}

/* Layout */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header__inner,
.site-main,
.site-footer__inner {
  width: min(100% - 2rem, 48rem);
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  flex-wrap: wrap;
}

.site-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-brand:hover {
  color: var(--teal);
}

.site-nav {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--navy);
}

.site-nav a[aria-current="page"] {
  color: var(--navy);
  font-weight: 600;
}

.site-main {
  flex: 1;
  padding: 2rem 0 3rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1.25rem 0;
  margin-top: auto;
}

.site-footer__inner {
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0.35rem 0;
}

/* Hero / page intro */

.hero {
  margin-bottom: 2rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.6rem, 4vw, 2rem);
  line-height: 1.2;
  color: var(--navy);
  letter-spacing: -0.02em;
}

.hero .lede {
  margin: 0;
  color: var(--muted);
  max-width: var(--max);
  font-size: 1.05rem;
}

.crumb {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.crumb a {
  color: var(--muted);
  text-decoration: none;
}

.crumb a:hover {
  color: var(--navy);
}

/* Cards */

.card-grid {
  display: grid;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem;
}

.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
  color: var(--navy);
}

.card h2 a {
  text-decoration: none;
  color: inherit;
}

.card h2 a:hover {
  color: var(--teal);
}

.card p {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  align-items: center;
  margin-top: 0.75rem;
}

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: var(--teal-soft);
  color: var(--teal);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1rem;
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.2;
}

.btn--primary {
  background: var(--navy);
  color: #fff;
}

.btn--primary:hover {
  background: var(--navy-hover);
  color: #fff;
}

.btn--secondary {
  background: var(--surface);
  color: var(--navy);
  border-color: var(--border);
}

.btn--secondary:hover {
  border-color: var(--navy);
  color: var(--navy);
}

.btn--block {
  width: 100%;
}

/* Download list */

.download-list {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.download-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem;
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 36rem) {
  .download-card {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.download-card h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  color: var(--navy);
}

.download-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.download-card .filename {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
}

/* Prose blocks */

.prose h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.15rem;
  color: var(--navy);
}

.prose p,
.prose li {
  color: var(--text);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose code,
code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: #ebe9e4;
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.prose pre {
  background: #1a1f2e;
  color: #e8e6e1;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.45;
}

.prose pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.callout {
  border-left: 3px solid var(--burgundy);
  background: #faf6f6;
  padding: 0.75rem 1rem;
  margin: 1.25rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.callout p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text);
}

.callout strong {
  color: var(--burgundy);
}

.section-label {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* Project subnav (claude-code-harness companion) */

.project-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  margin: 0 0 1.5rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}

.project-nav a {
  color: var(--muted);
  text-decoration: none;
}

.project-nav a:hover,
.project-nav a[aria-current="page"] {
  color: var(--navy);
  font-weight: 600;
}

/* Status card / badge */

.status-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.15rem;
  margin: 0 0 1.5rem;
}

.status-card--ok {
  border-left-color: var(--teal);
}

.status-card--drift {
  border-left-color: #b8860b;
}

.status-card--stale {
  border-left-color: var(--burgundy);
}

.status-card__title {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.status-card dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  margin: 0;
  font-size: 0.92rem;
}

.status-card dt {
  color: var(--muted);
  margin: 0;
}

.status-card dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.status-card__foot {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
}

.status-card--compact dl {
  grid-template-columns: 1fr;
  gap: 0.15rem;
}

.status-card--compact .status-card__line {
  margin: 0.15rem 0;
  font-size: 0.9rem;
}

/* Type tags */

.tag--erratum {
  background: #faf0f1;
  color: var(--burgundy);
}

.tag--drift {
  background: #f8f3e4;
  color: #7a5a10;
}

.tag--simplify {
  background: #eef1f6;
  color: var(--navy);
}

.tag--ok {
  background: var(--teal-soft);
  color: var(--teal);
}

.tag--warn {
  background: #f8f3e4;
  color: #7a5a10;
}

.tag--stale {
  background: #faf0f1;
  color: var(--burgundy);
}

/* Data tables */

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.data th,
table.data td {
  text-align: left;
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

table.data th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 700;
}

table.data code {
  font-size: 0.82em;
}

/* Entry cards (errata, drift, help) */

.entry {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 0 0 1rem;
}

.entry h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  color: var(--navy);
}

.entry__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.65rem;
}

.entry p,
.entry li {
  margin: 0.4rem 0;
  font-size: 0.95rem;
}

.entry ul {
  margin: 0.4rem 0;
  padding-left: 1.2rem;
}

.entry p:last-child {
  margin-bottom: 0;
}

/* Link grid on hub */

.link-grid {
  display: grid;
  gap: 0.75rem;
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
}

@media (min-width: 36rem) {
  .link-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.link-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
}

.link-card:hover {
  border-color: var(--navy);
}

.link-card strong {
  display: block;
  color: var(--navy);
  margin-bottom: 0.25rem;
}

.link-card span {
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Lesevertrag foot */

.lesevertrag {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--muted);
}

.lesevertrag strong {
  color: var(--text);
}

.lesevertrag p {
  margin: 0.35rem 0;
}

/* Feedback form (progressive, no JS required) */

.feedback-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  margin: 1rem 0 1.5rem;
}

.feedback-form label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy);
  margin: 0.75rem 0 0.3rem;
}

.feedback-form label:first-child {
  margin-top: 0;
}

.feedback-form input,
.feedback-form select,
.feedback-form textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
}

.feedback-form textarea {
  min-height: 8rem;
  resize: vertical;
}

.feedback-form .form-actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.feedback-form .form-hint {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* reviewed meta line */

.reviewed-line {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: var(--mono);
}

/* callout variants */

.callout--info {
  border-left-color: var(--navy);
  background: #f3f5f8;
}

.callout--info strong {
  color: var(--navy);
}

.callout--ok {
  border-left-color: var(--teal);
  background: var(--teal-soft);
}

.callout--ok strong {
  color: var(--teal);
}

/* Breites Layout (Hub und Projekt-Übersichten): kleine Cover, mehr Spalten */

.page-wide .site-header__inner,
.page-wide .site-main,
.page-wide .site-footer__inner {
  width: min(100% - 2rem, 70rem);
}

.page-wide .hero .lede,
.page-wide > .site-main > .callout {
  max-width: 46rem;
}

.btn--sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.88rem;
}

.card__cover img,
.book-head__cover img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
  box-shadow: 0 1px 2px rgba(26, 31, 46, 0.18), 0 4px 12px rgba(26, 31, 46, 0.16);
  transition: transform 0.15s ease;
}

.card__cover:hover img,
.book-head__cover:hover img {
  transform: translateY(-2px) rotate(-1deg);
}

/* Hub: kompakte Buchkarten, ab ~60rem dreispaltig */

@media (min-width: 40rem) {
  .page-wide .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 60rem) {
  .page-wide .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.card--book {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  grid-template-rows: auto auto 1fr;
  gap: 0 1rem;
  padding: 1.1rem 1.15rem;
}

.card--book .card__body {
  display: contents;
}

.card--book .card__cover {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
}

.card--book h2 {
  grid-column: 2;
  font-size: 1.08rem;
  line-height: 1.25;
}

.card--book p {
  grid-column: 2;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
}

.card--book .card__meta {
  grid-column: 1 / -1;
  align-self: end;
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  gap: 0.4rem 0.5rem;
}

.card--book .card__meta .btn {
  padding: 0.4rem 0.8rem;
  font-size: 0.88rem;
}

/* Projekt-Übersicht: Kopf mit kleinem Cover, Text und Prüfstatus */

.book-head {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 1rem 1.5rem;
  align-items: start;
  margin: 0 0 2rem;
}

.book-head .hero {
  margin-bottom: 0.75rem;
}

.book-head__hook {
  margin: 0 0 0.75rem;
  max-width: 46rem;
  padding-left: 0.75rem;
  border-left: 3px solid var(--teal);
  font-size: 0.98rem;
  line-height: 1.45;
  color: var(--navy);
}

.book-head__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
}

.book-head .status-card {
  grid-column: 1 / -1;
  margin: 0;
}

@media (min-width: 40rem) {
  .book-head {
    grid-template-columns: 7rem minmax(0, 1fr);
  }
}

@media (min-width: 62rem) {
  .book-head {
    grid-template-columns: 7.5rem minmax(0, 1fr) 19rem;
  }
  .book-head .status-card {
    grid-column: 3;
  }
}

/* Projekt-Übersicht: Neuigkeiten links, Bereiche und Downloads rechts */

.page-cols {
  display: grid;
  gap: 0 2.5rem;
}

@media (min-width: 62rem) {
  .page-cols {
    grid-template-columns: minmax(0, 1fr) 21rem;
    align-items: start;
  }
  .page-cols__side .link-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
  .page-wide .download-list {
    grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
    margin-top: 0;
  }
  .page-wide .download-card {
    grid-template-columns: 1fr;
    align-content: space-between;
  }
}

.page-wide .site-main > .prose,
.page-wide .site-main > .callout,
.page-wide .reviewed-line,
.page-wide .lesevertrag {
  max-width: 52rem;
}

@media (max-width: 30rem) {
  .book-head {
    grid-template-columns: 4.25rem minmax(0, 1fr);
    gap: 0.85rem 1rem;
  }
  .book-head__hook {
    font-size: 0.93rem;
  }
  .card--book {
    grid-template-columns: 3.75rem minmax(0, 1fr);
    gap: 0 0.85rem;
  }
}