/* ============================================================
   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+Sans+3:ital,wght@0,300;0,400;0,600;1,300;1,400&display=swap');

/* ============================================================
   VARIABLES
   ============================================================ */
:root {
  --bg:          #FAF6F0;
  --bg-card:     #F4EAD8;
  --bg-dark:     #EAD9C2;
  --ink:         #2C1810;
  --ink-mid:     #5C3D2E;
  --ink-light:   #9C7B6B;
  --accent:      #D4621A;
  --accent-dark: #A84D14;
  --rule:        #C9A98A;
  --rule-light:  #E8D8C4;
  --shadow:      rgba(44, 24, 16, 0.10);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.055'/%3E%3C/svg%3E");
  background-size: 300px 300px;
  color: var(--ink);
  font-family: 'Source Sans 3', sans-serif;
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; display: block; }
a   { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', serif;
  color: var(--ink);
  line-height: 1.25;
}

h1 { font-size: 2.6rem; font-weight: 700; }
h2 { font-size: 1.9rem; font-weight: 600; }
h3 { font-size: 1.35rem; font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 400; font-style: italic; }

p { margin-bottom: 1.1em; }
p:last-child { margin-bottom: 0; }

em { font-style: italic; }
strong { font-weight: 600; }

.label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.caption {
  font-size: 0.88rem;
  font-style: italic;
  color: var(--ink-mid);
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 2rem;
}

.site-main {
  flex: 1;
  padding: 3.5rem 0 5rem;
}

/* ============================================================
   ORNAMENTS & DIVIDERS
   ============================================================ */
.ornament {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 2.5rem 0;
  color: var(--rule);
  font-size: 0.8rem;
}
.ornament::before,
.ornament::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.ornament-glyph {
  font-family: serif;
  font-size: 1rem;
  color: var(--rule);
  letter-spacing: 0.4em;
}

.section-rule {
  border: none;
  border-top: 1px solid var(--rule-light);
  margin: 3rem 0;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  background-color: var(--bg);
  border-bottom: 1px solid var(--rule-light);
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.nav-inner {
  max-width: 1060px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.nav-logo:hover { color: var(--accent); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mid);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--rule-light);
  padding: 1.8rem 2rem;
  text-align: center;
  color: var(--ink-light);
  font-size: 0.82rem;
}

.footer-inner {
  max-width: 1060px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
}

.paw-link {
  color: var(--rule);
  text-decoration: none;
  font-size: 1rem;
  line-height: 1;
  transition: color 0.25s, transform 0.25s;
  display: inline-block;
}
.paw-link:hover {
  color: var(--accent);
  transform: scale(1.15);
}

/* ============================================================
   PAGE HEADER (shared across inner pages)
   ============================================================ */
.page-header {
  margin-bottom: 3rem;
  position: relative;
}

.page-header-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.page-header h1 {
  margin-bottom: 0.5rem;
}

.page-header-sub {
  font-style: italic;
  color: var(--ink-mid);
  font-size: 1.05rem;
}

/* ============================================================
   DECORATIVE ILLUSTRATIONS
   ============================================================ */
.deco-wrap {
  position: relative;
  overflow: visible;
}

.deco {
  position: absolute;
  mix-blend-mode: multiply;
  opacity: 0.14;
  pointer-events: none;
  user-select: none;
}

/* ============================================================
   LANDING — HERO
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1.55fr;
  gap: 4rem;
  align-items: start;
  margin-bottom: 4rem;
}

.hero-photo-wrap {
  position: relative;
}

.hero-photo {
  width: 100%;
  border-radius: 2px;
  box-shadow: 4px 6px 18px var(--shadow);
  filter: sepia(8%);
  transform: rotate(-0.6deg);
}

.hero-photo-caption {
  margin-top: 0.8rem;
  text-align: center;
}

.frida-caption-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 98, 26, 0.4);
  transition: border-color 0.2s;
}
.frida-caption-link:hover {
  border-bottom-color: var(--accent);
}

.hero-bio h1 {
  font-size: 2.4rem;
  margin-bottom: 0.2rem;
}

.hero-bio .hero-title {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.6rem;
}

.hero-bio p {
  color: var(--ink-mid);
  font-size: 0.98rem;
  margin-bottom: 1em;
}

.hero-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.2rem;
  border: 1.5px solid var(--rule);
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mid);
  text-decoration: none;
  background: transparent;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(212, 98, 26, 0.05);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
}

/* ============================================================
   CV SECTION (landing)
   ============================================================ */
.cv-section {
  background: var(--bg-card);
  border: 1px solid var(--rule-light);
  border-radius: 2px;
  padding: 2.5rem 2.8rem;
  position: relative;
}

.cv-section::before {
  content: '';
  position: absolute;
  inset: 5px;
  border: 1px solid var(--rule-light);
  pointer-events: none;
}

.cv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 1.6rem;
}

.cv-item h4 {
  font-family: 'Playfair Display', serif;
  font-size: 0.95rem;
  font-weight: 600;
  font-style: normal;
  color: var(--ink);
  margin-bottom: 0.35rem;
}

.cv-item .cv-meta {
  font-size: 0.82rem;
  color: var(--ink-light);
  margin-bottom: 0.2rem;
}

/* ============================================================
   SPECIMEN CARDS (publications)
   ============================================================ */
.specimen-list {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
}

.specimen-card {
  background: var(--bg-card);
  border: 1.5px solid var(--rule);
  padding: 2rem 2rem 1.8rem 2.4rem;
  position: relative;
  transition: box-shadow 0.2s;
}
.specimen-card::before {
  content: '';
  position: absolute;
  inset: 5px;
  border: 1px solid var(--rule-light);
  pointer-events: none;
}
.specimen-card:hover {
  box-shadow: 3px 5px 16px var(--shadow);
}

.specimen-number {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  font-family: 'Playfair Display', serif;
  font-size: 0.75rem;
  color: var(--ink-light);
  letter-spacing: 0.1em;
}

.specimen-venue {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.45rem;
}

.specimen-card h3 {
  font-size: 1.2rem;
  font-style: italic;
  margin-bottom: 0.3rem;
}
.specimen-card h3 a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--rule-light);
  transition: border-color 0.2s, color 0.2s;
}
.specimen-card h3 a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.specimen-authors {
  font-size: 0.88rem;
  color: var(--ink-light);
  margin-bottom: 0.9rem;
}
.specimen-authors strong {
  color: var(--ink-mid);
  font-weight: 600;
}

.specimen-desc {
  font-size: 0.92rem;
  color: var(--ink-mid);
  margin-bottom: 1rem;
  line-height: 1.65;
}

.specimen-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--rule);
  color: var(--ink-light);
  border-radius: 1px;
}

.specimen-links {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.specimen-links a {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.specimen-links a:hover {
  border-bottom-color: var(--accent);
}

/* ============================================================
   ALT PROTEINS
   ============================================================ */
.ap-intro {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-bottom: 3rem;
}

.field-observations {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
  margin-top: 1.8rem;
}

.field-obs-card {
  border-left: 3px solid var(--accent);
  padding: 1rem 1.2rem;
  background: var(--bg-card);
}

.field-obs-card .obs-date {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 0.3rem;
}

.field-obs-card h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 600;
  font-style: normal;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.field-obs-card p {
  font-size: 0.9rem;
  color: var(--ink-mid);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ============================================================
   FIELD NOTES
   ============================================================ */
.field-notes-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 4rem;
  align-items: start;
}

.field-section {
  margin-bottom: 3.5rem;
}

.field-section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.6rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule-light);
}

.field-section-header h2 {
  font-size: 1.5rem;
}

.field-section-header .section-num {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rule);
}

.field-entry {
  padding: 1.1rem 0;
  border-bottom: 1px dashed var(--rule-light);
}
.field-entry:last-child { border-bottom: none; }

.field-entry-date {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 0.2rem;
}

.field-entry h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.field-entry p {
  font-size: 0.9rem;
  color: var(--ink-mid);
  line-height: 1.65;
  margin-bottom: 0;
}

.field-sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-note {
  background: var(--bg-card);
  border: 1px solid var(--rule-light);
  padding: 1.4rem;
  font-size: 0.88rem;
  font-style: italic;
  color: var(--ink-mid);
  line-height: 1.65;
  margin-bottom: 1.8rem;
  position: relative;
}
.sidebar-note::before {
  content: '"';
  font-family: 'Playfair Display', serif;
  font-size: 3.5rem;
  color: var(--rule);
  position: absolute;
  top: -0.4rem;
  left: 0.8rem;
  line-height: 1;
}
.sidebar-note p { padding-top: 1.2rem; }

.sidebar-illustration {
  text-align: center;
  opacity: 0.22;
  mix-blend-mode: multiply;
  filter: sepia(20%);
}
.sidebar-illustration img {
  max-width: 180px;
  margin: 0 auto;
}
.sidebar-illustration figcaption {
  font-size: 0.72rem;
  font-style: italic;
  color: var(--ink-light);
  margin-top: 0.5rem;
}

/* ============================================================
   FRIDA PAGE
   ============================================================ */
.frida-profile {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3.5rem;
  align-items: start;
  margin-bottom: 3rem;
}

.frida-headshot {
  width: 100%;
  border-radius: 2px;
  filter: sepia(10%);
  box-shadow: 3px 5px 14px var(--shadow);
}

.frida-profile-meta {
  margin-bottom: 0.5rem;
}

.frida-profile-meta .label {
  display: block;
  margin-bottom: 0.15rem;
}

.frida-affil {
  font-size: 0.9rem;
  color: var(--ink-light);
  margin-bottom: 0.2rem;
}

.frida-contact {
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule-light);
  font-size: 0.85rem;
  color: var(--ink-light);
}

.research-interest {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--rule-light);
}
.research-interest:last-child { border-bottom: none; }

.research-interest h4 {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-style: italic;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.research-interest p {
  font-size: 0.92rem;
  color: var(--ink-mid);
  margin-bottom: 0;
  line-height: 1.65;
}

.figure-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 1.6rem;
}

.figure-item figure {
  text-align: center;
}

.figure-item img {
  width: 100%;
  border-radius: 2px;
  filter: sepia(8%);
  box-shadow: 2px 3px 10px var(--shadow);
}

.figure-item figcaption {
  font-size: 0.78rem;
  font-style: italic;
  color: var(--ink-light);
  margin-top: 0.5rem;
  text-align: center;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 820px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-photo { transform: none; max-width: 340px; margin: 0 auto; }

  .cv-grid { grid-template-columns: 1fr 1fr; }

  .ap-intro { grid-template-columns: 1fr; gap: 2rem; }

  .field-observations { grid-template-columns: 1fr; }

  .field-notes-layout { grid-template-columns: 1fr; }
  .field-sidebar { position: static; }

  .frida-profile { grid-template-columns: 1fr; }

  .figure-grid { grid-template-columns: 1fr 1fr; }

  .nav-links { gap: 1.2rem; }
  .nav-links a { font-size: 0.78rem; }
}

@media (max-width: 540px) {
  .container { padding: 0 1.2rem; }
  .site-main { padding: 2rem 0 3rem; }
  .cv-grid { grid-template-columns: 1fr; }
  .figure-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 0.9rem; }
}