/* ============================================================
   Eduardo Bañados — banados.www3.mpia.de
   Single CSS file. No frameworks. CSS custom properties throughout.
   ============================================================ */

/* === Custom Properties ======================================= */
:root {
  --color-bg:           #FAFAF8;   /* warm off-white */
  --color-text:         #1C1C1E;   /* near-black, slightly warm */
  --color-secondary:    #6E6E73;   /* medium gray — dates, affiliations */
  --color-accent:       #1B3A6B;   /* deep midnight blue — links, active nav */
  --color-accent-hover: #2952A3;   /* lighter blue on hover */
  --color-border:       #E5E5E0;   /* subtle warm separator */
  --color-surface:      #F2F2EF;   /* slightly darker off-white */

  --font-display:  'Crimson Pro', Georgia, 'Times New Roman', serif;
  --font-body:     'Inter', system-ui, -apple-system, sans-serif;

  --width-content: 800px;
  --spacing-page:  2.5rem;
}

/* === Reset ================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

/* === Base =================================================== */
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  padding: 0 1.5rem;
  -webkit-font-smoothing: antialiased;
}

/* === Layout ================================================= */
.site-container {
  max-width: var(--width-content);
  margin: 0 auto;
}

/* === Header & Nav =========================================== */
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 2.25rem 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 3rem;
}

.site-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  line-height: 1;
  white-space: nowrap;
}
.site-name:hover { color: var(--color-accent); }

nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  align-items: center;
}

nav a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
  padding-bottom: 2px;
}
nav a:hover { color: var(--color-text); }

/* Active nav state: body[data-page] + a[data-nav] CSS selector */
body[data-page="index"]        nav a[data-nav="index"],
body[data-page="publications"] nav a[data-nav="publications"],
body[data-page="cv"]           nav a[data-nav="cv"],
body[data-page="group"]        nav a[data-nav="group"],
body[data-page="contact"]      nav a[data-nav="contact"],
body[data-page="press"]        nav a[data-nav="press"] {
  color: var(--color-text);
  border-bottom: 1.5px solid var(--color-text);
}

/* === Main & Footer ========================================== */
main {
  min-height: 60vh;
  padding-bottom: var(--spacing-page);
}

footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0 2rem;
  font-size: 0.8125rem;
  color: var(--color-secondary);
  text-align: center;
}
footer a { color: var(--color-secondary); text-decoration: none; }
footer a:hover { color: var(--color-accent); }

/* === Typography ============================================= */
h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
h2 {
  font-family: var(--font-display);
  font-size: 1.3125rem;
  font-weight: 600;
  line-height: 1.2;
  margin-top: 2.75rem;
  margin-bottom: 0.875rem;
}
h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: 2px;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

/* === Home page ============================================== */
.home-intro {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.home-intro img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
  border: 1px solid var(--color-border);
}

.home-bio p {
  text-align: justify;
  hyphens: auto;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.15s;
}
.social-links a:hover { color: var(--color-accent); }
.social-links svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

/* === CV page ================================================ */
.cv-section { margin-bottom: 0.5rem; }

.cv-entry {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}
.cv-entry:last-of-type { border-bottom: none; }

.cv-year {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-secondary);
  padding-top: 0.15rem;
  line-height: 1.5;
}

.cv-content { line-height: 1.6; }
.cv-content em { color: var(--color-secondary); }

.cv-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}
.cv-download:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  text-decoration: none;
}
.cv-download svg { width: 14px; height: 14px; }

/* === Group page ============================================= */
.group-intro { margin-bottom: 0.5rem; }

.member-list {
  list-style: none;
  margin: 0.25rem 0 0;
}
.member-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}
.member-list li:last-child { border-bottom: none; }

.member-name { font-weight: 400; }
.member-name a { color: var(--color-text); font-weight: 500; }
.member-name a:hover { color: var(--color-accent); text-decoration: none; }

.member-meta {
  font-size: 0.875rem;
  color: var(--color-secondary);
  text-align: right;
  white-space: nowrap;
  flex-shrink: 0;
}

.member-list.former .member-name,
.member-list.former .member-name a {
  color: var(--color-secondary);
  font-weight: 400;
}
.member-list.former .member-name a:hover { color: var(--color-accent); }

.collaborators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.4rem 1.5rem;
  margin-top: 0.5rem;
}
.collaborator {
  font-size: 0.9375rem;
  color: var(--color-secondary);
  padding: 0.3rem 0;
}
.collaborator span { font-size: 0.8125rem; }

/* === Publications page ====================================== */
.pub-intro { margin-bottom: 2rem; max-width: 620px; }

.pub-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 500px;
}

.pub-link-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  color: var(--color-text);
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  background: var(--color-surface);
}
.pub-link-btn:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
  text-decoration: none;
  color: var(--color-text);
}
.pub-link-btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-secondary);
}
.pub-link-text strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
}
.pub-link-text span {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-secondary);
  margin-top: 0.15rem;
}

/* === Contact page =========================================== */
.contact-card { max-width: 440px; }

.contact-card address {
  font-style: normal;
  line-height: 1.8;
  color: var(--color-secondary);
  margin-bottom: 1.75rem;
}

.contact-email {
  font-size: 1.0625rem;
  font-weight: 500;
}

/* === Press page ============================================= */
.press-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}
.press-item:last-child { border-bottom: none; }

.press-item-title {
  font-weight: 500;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}
.press-item-title a { color: var(--color-text); }
.press-item-title a:hover { color: var(--color-accent); text-decoration: none; }

.press-item-year {
  font-size: 0.8125rem;
  color: var(--color-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.press-item ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  font-size: 0.875rem;
  color: var(--color-secondary);
}
.press-item ul li::before {
  content: "·";
  margin-right: 0.4rem;
  color: var(--color-border);
}

.award-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
}
.award-item:last-child { border-bottom: none; }
.award-year {
  font-size: 0.875rem;
  color: var(--color-secondary);
  font-weight: 500;
  min-width: 40px;
}

/* === Mobile ================================================= */
@media (max-width: 620px) {
  body { padding: 0 1.125rem; }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding-top: 1.75rem;
    margin-bottom: 2rem;
  }

  nav { gap: 1.25rem; }

  .home-intro {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .home-intro img {
    max-width: 160px;
  }

  .cv-entry {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
  .cv-year { font-size: 0.8125rem; }

  .member-list li {
    flex-direction: column;
    gap: 0.125rem;
    align-items: flex-start;
  }
  .member-meta { text-align: left; white-space: normal; }

  .pub-links { max-width: 100%; }

  h1 { font-size: 1.625rem; }
  h2 { font-size: 1.1875rem; }
}