/* ================================================================
   martinschweinberger.de — styles.css
   Design direction: Editorial minimalism with academic gravitas
   Typography: Playfair Display (headings) + Source Serif 4 (body)
   Palette: Warm off-white · Dark slate · Terracotta accent · Stone
   ================================================================ */

/* ----------------------------------------------------------------
   FONTS
---------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ----------------------------------------------------------------
   DESIGN TOKENS
---------------------------------------------------------------- */
:root {
  --color-bg:          #F8F6F1;       /* warm off-white ground */
  --color-surface:     #FFFFFF;       /* card / panel backgrounds */
  --color-slate:       #1E2A35;       /* primary text / navbar */
  --color-slate-mid:   #3A4D5C;       /* secondary headings */
  --color-stone:       #7A8A94;       /* muted text, borders */
  --color-stone-light: #D6D0C8;       /* subtle dividers */
  --color-accent:      #C0572A;       /* terracotta — links, highlights */
  --color-accent-warm: #E07A4F;       /* lighter accent for hover */
  --color-accent-bg:   #F5EDE8;       /* very light terracotta tint */

  --font-display:  'Playfair Display', Georgia, serif;
  --font-body:     'Source Serif 4', Georgia, serif;
  --font-mono:     'JetBrains Mono', 'Courier New', monospace;

  --radius:        3px;
  --shadow-sm:     0 1px 4px rgba(30, 42, 53, 0.08);
  --shadow-md:     0 4px 16px rgba(30, 42, 53, 0.10);
  --transition:    0.2s ease;
}

/* ----------------------------------------------------------------
   BASE
---------------------------------------------------------------- */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--color-slate);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ----------------------------------------------------------------
   TYPOGRAPHY
---------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-slate);
  line-height: 1.25;
  margin-top: 2rem;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-slate);
  padding-bottom: 0.5rem;
  margin-bottom: 1.4rem;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* Override Quarto's full-width title block h1 */
#title-block-header h1.title {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--color-slate);
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0.25rem;
  display: block;
}

h2 {
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--color-slate-mid);
  border-bottom: 1px solid var(--color-stone-light);
  padding-bottom: 0.3rem;
  margin-top: 2.6rem;
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-slate);
  margin-top: 1.8rem;
  font-style: italic;
}

h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-stone);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 1.4rem;
}

p {
  color: var(--color-slate);
  font-weight: 300;
  margin-bottom: 0.9rem;
}

li {
  font-weight: 300;
  color: var(--color-slate);
  margin-bottom: 0.2rem;
}

strong {
  font-weight: 600;
  color: var(--color-slate);
}

em {
  font-style: italic;
  color: var(--color-slate-mid);
}

blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 0.6rem 0 0.6rem 1.4rem;
  margin-left: 0;
  color: var(--color-slate-mid);
  font-style: italic;
  background: var(--color-accent-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.83em;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  padding: 0.15em 0.4em;
  border-radius: 2px;
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* ----------------------------------------------------------------
   LINKS
---------------------------------------------------------------- */
a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

a:visited {
  color: var(--color-accent);
}

a:hover {
  color: var(--color-accent-warm);
  border-bottom-color: var(--color-accent-warm);
  text-decoration: none;
}

/* ----------------------------------------------------------------
   NAVBAR
---------------------------------------------------------------- */
.navbar {
  background-color: var(--color-slate) !important;
  border-bottom: 2px solid var(--color-accent);
  padding: 0 1.5rem;
  font-family: var(--font-body);
}

.navbar-brand,
.navbar-brand:hover {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff !important;
  letter-spacing: -0.01em;
}

.navbar-nav .nav-link {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.82) !important;
  letter-spacing: 0.02em;
  padding: 0.65rem 0.85rem !important;
  transition: color var(--transition), background-color var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: #ffffff !important;
  background-color: rgba(192, 87, 42, 0.25);
  text-decoration: none;
}

.navbar-nav .nav-link.active {
  color: #ffffff !important;
  background-color: rgba(192, 87, 42, 0.35);
  border-bottom: 2px solid var(--color-accent);
}

/* Dropdown */
.navbar-nav .dropdown-menu {
  background-color: var(--color-slate);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 6px 0;
  min-width: 200px;
}

.navbar-nav .dropdown-item {
  color: rgba(255,255,255,0.82);
  font-size: 0.87rem;
  font-weight: 300;
  padding: 8px 18px;
  transition: background-color var(--transition), color var(--transition);
}

.navbar-nav .dropdown-item:hover {
  background-color: rgba(192, 87, 42, 0.25);
  color: #ffffff;
  text-decoration: none;
}

/* ----------------------------------------------------------------
   MAIN CONTENT AREA
---------------------------------------------------------------- */
main, .quarto-container {
  background-color: var(--color-bg);
}

/* Content column */
.quarto-content {
  max-width: 780px;
}

/* Title block */
#title-block-header {
  margin-bottom: 2.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-stone-light);
}

#title-block-header .description {
  display: none;
}

/* ----------------------------------------------------------------
   TABLES
---------------------------------------------------------------- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1.5rem 0 2rem;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius);
  overflow: hidden;
}

thead tr {
  background-color: var(--color-slate);
  color: #ffffff;
}

thead th {
  padding: 0.7rem 1rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: left;
  border: none;
}

tbody tr {
  border-bottom: 1px solid var(--color-stone-light);
  transition: background-color var(--transition);
}

tbody tr:hover {
  background-color: var(--color-accent-bg);
}

tbody td {
  padding: 0.65rem 1rem;
  vertical-align: top;
  color: var(--color-slate);
  font-weight: 300;
  border: none;
}

tbody tr:last-child {
  border-bottom: none;
}

/* ----------------------------------------------------------------
   TOC SIDEBAR
---------------------------------------------------------------- */
.sidebar nav[role=doc-toc] {
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.sidebar nav[role=doc-toc] ul > li > a {
  color: var(--color-stone);
  transition: color var(--transition), border-color var(--transition);
  padding: 3px 6px;
}

.sidebar nav[role=doc-toc] ul > li > a:hover,
.sidebar nav[role=doc-toc] ul > li > ul > li > a:hover {
  color: var(--color-accent);
  border-left: 2px solid var(--color-accent);
  background-color: var(--color-accent-bg);
  text-decoration: none;
}

.sidebar nav[role=doc-toc] ul > li > a.active,
.sidebar nav[role=doc-toc] ul > li > ul > li > a.active {
  color: var(--color-accent) !important;
  border-left: 2px solid var(--color-accent);
  font-weight: 600;
  background-color: var(--color-accent-bg);
}

/* ----------------------------------------------------------------
   FOOTER
---------------------------------------------------------------- */
.nav-footer {
  background-color: var(--color-slate) !important;
  color: rgba(255, 255, 255, 0.50);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 300;
  padding: 24px 40px;
  border-top: 2px solid var(--color-accent);
}

.nav-footer a {
  color: rgba(255, 255, 255, 0.55) !important;
  text-decoration: none;
  transition: color var(--transition);
}

.nav-footer a:hover {
  color: var(--color-accent-warm) !important;
  border-bottom: none;
}

.nav-footer .nav-footer-left,
.nav-footer .nav-footer-center,
.nav-footer .nav-footer-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

/* ----------------------------------------------------------------
   CALLOUTS
---------------------------------------------------------------- */
.callout {
  border-radius: var(--radius);
  border-left-width: 3px;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.callout-tip {
  border-left-color: var(--color-accent) !important;
  background-color: var(--color-accent-bg) !important;
}

.callout-tip .callout-header {
  background-color: rgba(192, 87, 42, 0.15) !important;
  color: var(--color-accent);
}

.callout-note {
  border-left-color: var(--color-slate-mid) !important;
}

/* ----------------------------------------------------------------
   NUMBERED LIST REFINEMENTS (publications, presentations)
---------------------------------------------------------------- */
ol {
  padding-left: 1.4rem;
}

ol li {
  margin-bottom: 0.75rem;
  padding-left: 0.2rem;
}

/* Publications — hanging indent style */
.publications-list p {
  padding-left: 2rem;
  text-indent: -2rem;
}

/* ----------------------------------------------------------------
   HORIZONTAL RULE
---------------------------------------------------------------- */
hr {
  border: none;
  border-top: 1px solid var(--color-stone-light);
  margin: 2.5rem 0;
}

/* ----------------------------------------------------------------
   SEARCH
---------------------------------------------------------------- */
.quarto-search .aa-Form {
  border: 1px solid var(--color-stone-light);
  border-radius: var(--radius);
  background: var(--color-surface);
}

/* ----------------------------------------------------------------
   RESPONSIVE
---------------------------------------------------------------- */
@media (max-width: 768px) {
  body {
    font-size: 15.5px;
  }

  h1 {
    font-size: 1.9rem;
  }

  #title-block-header h1.title {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .navbar {
    padding: 0 1rem;
  }

  table {
    font-size: 0.85rem;
  }

  thead th,
  tbody td {
    padding: 0.5rem 0.75rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.65rem;
  }

  body {
    font-size: 15px;
    line-height: 1.72;
  }
}