/* absdata.de — Securitisation Law Notes
   Clean, professional light layout */

:root {
  --color-bg: #ffffff;
  --color-surface: #f7f8fa;
  --color-surface-alt: #eef1f5;
  --color-border: #d9dee5;
  --color-text: #1d2a3a;
  --color-text-muted: #5a6a7e;
  --color-accent: #0b4a8a;
  --color-accent-dark: #08366a;
  --color-accent-light: #e6eef8;
  --color-brand-dot: #e87722;
  --color-warning: #a65a00;
  --max-width: 1100px;
  --content-width: 760px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(15, 30, 60, 0.04);
  --shadow-md: 0 4px 14px rgba(15, 30, 60, 0.08);
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; }

a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}
a:hover { color: var(--color-accent-dark); border-bottom-color: var(--color-accent); }

/* Header / Navigation */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.3px;
  border: none;
  line-height: 1.1;
}
.brand .brand-accent { color: inherit; }
.brand .brand-dot { color: var(--color-brand-dot); font-weight: 900; margin: 0 1px; }

.brand-mark {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-accent);
}
.brand-mark .brand-dot { color: var(--color-brand-dot); font-weight: 900; margin: 0 1px; }
.brand-tagline {
  display: block;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 4px;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--color-text);
  font-size: 15px;
  font-weight: 500;
  border: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, #f4f7fb 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 24px 56px;
}
.hero-inner { max-width: var(--max-width); margin: 0 auto; }
.hero-eyebrow {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 14px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 44px;
  line-height: 1.15;
  margin: 0 0 18px;
  max-width: 760px;
  color: var(--color-text);
}
.hero p.lead {
  font-size: 19px;
  line-height: 1.55;
  max-width: 720px;
  color: var(--color-text-muted);
  margin: 0;
}

/* Page Header */
.page-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 24px 36px;
}
.page-header-inner { max-width: var(--max-width); margin: 0 auto; }
.breadcrumb { font-size: 13px; color: var(--color-text-muted); margin-bottom: 10px; }
.breadcrumb a { color: var(--color-text-muted); border: none; }
.breadcrumb a:hover { color: var(--color-accent); }
.page-header h1 {
  font-family: var(--font-serif);
  font-size: 36px;
  line-height: 1.2;
  margin: 0 0 10px;
  color: var(--color-text);
}
.page-header p.subtitle {
  font-size: 17px;
  color: var(--color-text-muted);
  margin: 0;
  max-width: 720px;
}

/* Main */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 72px;
}
main.narrow { max-width: calc(var(--content-width) + 48px); }

article h2 {
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1.25;
  margin: 40px 0 14px;
  color: var(--color-text);
  page-break-after: avoid;
  break-after: avoid-page;
}
article h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.3;
  margin: 28px 0 10px;
  color: var(--color-text);
  page-break-after: avoid;
  break-after: avoid-page;
}
article h2 + p, article h3 + p,
article h2 + ul, article h3 + ul,
article h2 + ol, article h3 + ol {
  page-break-before: avoid;
  break-before: avoid-page;
}
article p, article ul, article ol { margin: 0 0 16px; }
article ul, article ol { padding-left: 22px; }
article li { margin-bottom: 8px; }
article strong { color: var(--color-text); }

.lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--color-text-muted);
  border-left: 3px solid var(--color-accent);
  padding-left: 18px;
  margin: 0 0 32px;
}

.callout {
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-accent);
  padding: 18px 22px;
  margin: 24px 0;
  border-radius: var(--radius);
  font-size: 16px;
}
.callout strong { color: var(--color-accent-dark); }
.callout-warning {
  background: #fff7ec;
  border-left-color: var(--color-warning);
}
.callout-warning strong { color: var(--color-warning); }

.key-points {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin: 0 0 32px;
}
.key-points h3 {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-accent);
}
.key-points ul { margin: 0; padding-left: 20px; }
.key-points li { margin-bottom: 6px; }

/* Topic grid */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 0 0 40px;
}
.topic-card {
  display: block;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 24px;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.topic-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
}
.topic-card .topic-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}
.topic-card h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  margin: 0 0 8px;
  line-height: 1.3;
  color: var(--color-text);
}
.topic-card p {
  margin: 0;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: 22px;
  margin: 40px 0 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

/* Resources */
.resource-group { margin-bottom: 40px; }
.resource-group h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.resource-group > p {
  color: var(--color-text-muted);
  font-size: 15px;
  margin: 0 0 16px;
}
.resource-list { list-style: none; padding: 0; margin: 0; }
.resource-list li {
  border-bottom: 1px solid var(--color-border);
  padding: 14px 0;
}
.resource-list li:last-child { border-bottom: none; }
.resource-list a { font-weight: 600; font-size: 16px; }
.resource-list .resource-desc {
  display: block;
  color: var(--color-text-muted);
  font-size: 14px;
  margin-top: 4px;
  line-height: 1.45;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 32px 24px 40px;
  margin-top: 48px;
  color: var(--color-text-muted);
  font-size: 14px;
}
.site-footer-inner { max-width: var(--max-width); margin: 0 auto; }
.short-disclaimer {
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin: 0 0 16px;
  max-width: 900px;
}
.footer-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  font-size: 13px;
}
.footer-links a {
  color: var(--color-text-muted);
  margin-right: 18px;
  border: none;
}
.footer-links a:hover { color: var(--color-accent); }

/* Topic nav */
.topic-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
  flex-wrap: wrap;
}
.topic-nav a {
  display: block;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  max-width: 280px;
  color: var(--color-text);
}
.topic-nav a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.topic-nav .label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

/* Profile page components */
.profile-hero {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  margin: 0 0 36px;
  flex-wrap: wrap;
}
.profile-photo {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
  background: var(--color-surface);
}
.profile-intro {
  flex: 1 1 300px;
  min-width: 260px;
  padding-top: 8px;
}

.author-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 0 0 28px;
  flex-wrap: wrap;
}
.author-photo-link { border: none; flex-shrink: 0; }
.author-photo {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: block;
}
.author-text {
  flex: 1 1 300px;
  min-width: 240px;
}
.author-text p { margin: 0 0 10px; font-size: 15px; line-height: 1.55; }
.author-text p:last-child { margin-bottom: 0; }

/* ============================================================
   Responsive breakpoints
   iPad landscape (1024px) is already covered by base layout.
   The following tiers cover iPad portrait, iPhone and small phones.
   ============================================================ */

/* iPad portrait — up to 1024px */

/* === Papers listing === */
.paper-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-bottom: 18px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.paper-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); }
.paper-card .paper-tag {
  font-size: 11px; font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: 8px;
}
.paper-card h3 {
  font-family: var(--font-serif); font-size: 21px;
  margin: 0 0 6px; line-height: 1.3; color: var(--color-text);
}
.paper-card .paper-subtitle {
  font-style: italic; color: var(--color-text-muted);
  margin: 0 0 10px; font-size: 16px;
}
.paper-card .paper-meta {
  font-size: 13px; color: var(--color-text-muted);
  margin-bottom: 14px;
}
.paper-card .paper-meta span + span::before {
  content: " · "; color: var(--color-border); margin: 0 2px;
}
.paper-card p.paper-abstract {
  margin: 0 0 16px; color: var(--color-text);
  font-size: 15px; line-height: 1.55;
}
.paper-download {
  display: inline-flex; align-items: center; gap: 8px;
  align-self: flex-start;
  background: var(--color-accent); color: #fff;
  padding: 10px 18px; border-radius: 4px;
  text-decoration: none; font-weight: 600; font-size: 14px;
  letter-spacing: 0.3px;
  transition: background 0.2s;
}
.paper-download:hover { background: #08375f; color: #fff; }
.paper-download::before { content: "↓"; font-size: 16px; font-weight: 700; }

@media (max-width: 1024px) {
  :root { --max-width: 960px; }
  .hero { padding: 56px 24px 48px; }
  .hero h1 { font-size: 40px; }
  .page-header h1 { font-size: 32px; }
}

/* Large phone / small tablet — up to 768px */
@media (max-width: 768px) {
  html, body { font-size: 16px; }
  .site-header-inner {
    padding: 14px 20px;
    gap: 12px;
    flex-wrap: wrap;
  }
  .nav-toggle { display: block; }
  .site-nav {
    width: 100%;
    display: none;
  }
  .site-nav.open { display: block; }
  .site-nav ul {
    flex-direction: column;
    gap: 10px;
    padding: 12px 0 4px;
    width: 100%;
  }
  .site-nav a {
    font-size: 15px;
    display: inline-block;
  }
  .hero { padding: 44px 20px 36px; }
  .hero h1 { font-size: 32px; line-height: 1.2; }
  .hero p.lead { font-size: 17px; }
  .page-header { padding: 36px 20px 28px; }
  .page-header h1 { font-size: 28px; }
  .page-header p.subtitle { font-size: 16px; }
  main { padding: 32px 20px 56px; }
  article h2 { font-size: 22px; margin-top: 32px; }
  article h3 { font-size: 18px; margin-top: 22px; }
  .lede { font-size: 17px; padding-left: 14px; }
  .key-points { padding: 18px 20px; }
  .callout { padding: 16px 18px; font-size: 15px; }

  .topic-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .profile-hero { gap: 20px; }
  .profile-photo { width: 180px; height: 180px; margin: 0 auto; }
  .profile-intro { text-align: center; }

  .topic-nav { gap: 10px; }
  .topic-nav a { flex: 1 1 160px; max-width: none; padding: 10px 14px; }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .footer-links a { display: inline-block; margin-bottom: 4px; }
}

/* iPhone portrait — up to 480px */
@media (max-width: 480px) {
  .brand { font-size: 21px; }
  .brand-tagline { font-size: 10px; letter-spacing: 1.2px; }
  .hero { padding: 36px 18px 30px; }
  .hero h1 { font-size: 26px; }
  .hero p.lead { font-size: 16px; }
  .hero-eyebrow { font-size: 11px; letter-spacing: 1.5px; }
  .page-header { padding: 28px 18px 22px; }
  .page-header h1 { font-size: 24px; }
  .page-header p.subtitle { font-size: 15px; }
  main { padding: 28px 18px 48px; }
  article h2 { font-size: 20px; }
  article h3 { font-size: 17px; }
  article p, article ul, article ol { font-size: 16px; }
  .lede { font-size: 16px; }
  .key-points { padding: 16px 18px; }
  .key-points ul { padding-left: 18px; }
  .topic-card { padding: 18px 20px; }
  .topic-card h3 { font-size: 18px; }
  .profile-photo { width: 160px; height: 160px; }
  .author-card { padding: 16px 18px; gap: 14px; }
  .author-photo { width: 80px; height: 80px; }
  .site-footer { padding: 24px 18px 28px; }
  .short-disclaimer { font-size: 12px; }
}

/* Make all interactive elements at least 44x44 — Apple HIG touch target */
@media (pointer: coarse) {
  .site-nav a { padding: 8px 0; }
  .topic-nav a { padding: 14px 18px; }
  .topic-card { padding: 24px; }
  .resource-list li { padding: 16px 0; }
}

@media print {
  .site-header, .site-footer, .topic-nav, .nav-toggle { display: none; }
  body { color: #000; }
  a { color: #000; text-decoration: underline; }
  .topic-card { break-inside: avoid; border: 1px solid #999; }
  .key-points, .callout { break-inside: avoid; }
}