/* ═══════════════════════════════════════════════
   Joe Langley — Conservation Scientist
   Palette: olive / parchment / sage / terracotta
   ═══════════════════════════════════════════════ */

:root {
  --charcoal:     #2c3020;
  --parchment:    #f0ead8;
  --parchment-dk: #e2d9c4;
  --sage:         #7a9068;
  --sage-lt:      #a8bc97;
  --terracotta:   #b5715a;
  --terra-lt:     #cc8a72;
  --ink:          #2c3020;
  --muted:        #7a7a6e;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --nav-h:        58px;
  --section-pad:  clamp(3rem, 6vw, 5rem);
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-weight: 300;
  background: var(--parchment);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }


/* ══════════════════════════════════════
   NAV — desktop
══════════════════════════════════════ */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  background: rgba(44, 48, 32, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-name {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--parchment);
  letter-spacing: 0.04em;
  white-space: nowrap;
  margin-right: auto;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-link {
  display: block;
  padding: 0.4rem 0.85rem;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(240,234,216,0.75);
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-link:hover,
.nav-link.active {
  color: var(--parchment);
}
.nav-link.active {
  border-bottom: 1px solid var(--terracotta);
}

/* Desktop dropdown — hover */
.nav-dropdown-wrap {
  position: relative;
}
.nav-dropdown-wrap .caret {
  font-size: 0.65rem;
  vertical-align: middle;
  margin-left: 2px;
}
.nav-dropdown {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--charcoal);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 3px;
  min-width: 230px;
  padding: 0.4rem 0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  transition: opacity 0.18s ease, visibility 0.18s ease;
  z-index: 300;
}
.nav-dropdown-wrap:hover .nav-dropdown,
.nav-dropdown-wrap:focus-within .nav-dropdown {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}
.nav-dropdown li a {
  display: block;
  padding: 0.55rem 1.1rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(240,234,216,0.75);
  transition: background 0.15s, color 0.15s;
}
.nav-dropdown li a:hover {
  background: rgba(255,255,255,0.05);
  color: var(--parchment);
}

/* Social icons */
.nav-socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-left: 1rem;
  border-left: 1px solid rgba(255,255,255,0.1);
}
.nav-socials a {
  display: flex;
  align-items: center;
  opacity: 0.6;
  transition: opacity 0.2s;
}
.nav-socials a:hover { opacity: 1; }
.social-svg {
  width: 18px; height: 18px;
  display: block;
  filter: brightness(0) saturate(100%) invert(95%) sepia(15%) saturate(300%) hue-rotate(10deg);
}

/* Hamburger — hidden on desktop */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
  -webkit-tap-highlight-color: transparent;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--parchment);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}


/* ══════════════════════════════════════
   MOBILE MENU OVERLAY
   Lives directly on <body>, never inside
   .topnav, so it can never be clipped.
══════════════════════════════════════ */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--charcoal);
  z-index: 199;
  flex-direction: column;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem 0 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.mobile-menu.open {
  display: flex;
}

.mobile-menu-links {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.mobile-menu-links > li > a,
.mobile-projects-toggle {
  display: block;
  width: 100%;
  padding: 1rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(240,234,216,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  cursor: pointer;
  text-align: left;
}
.mobile-projects-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mobile-projects-list {
  display: none;
  background: rgba(0,0,0,0.15);
}
.mobile-projects-list.open {
  display: block;
}
.mobile-projects-list li a {
  display: block;
  padding: 0.75rem 1.5rem 0.75rem 2.25rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: rgba(240,234,216,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.mobile-projects-list li a:hover {
  color: var(--parchment);
}

.mobile-menu-socials {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.mobile-menu-socials a {
  opacity: 0.6;
  display: flex;
  align-items: center;
}
.mobile-menu-socials a:hover { opacity: 1; }


/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  position: relative;
  height: 100svh;
  min-height: 520px;
  overflow: hidden;
}
.hero-img-wrap {
  position: absolute;
  inset: 0;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  transform: scale(1.04);
  animation: heroScale 12s ease-out forwards;
}
@keyframes heroScale {
  to { transform: scale(1); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(44,48,32,0.15) 0%,
    rgba(44,48,32,0.1)  40%,
    rgba(44,48,32,0.72) 80%,
    rgba(44,48,32,0.88) 100%
  );
  display: flex;
  align-items: flex-end;
  padding: 0 clamp(1.5rem, 6vw, 5rem) clamp(3.5rem, 7vw, 5.5rem);
}
.hero-text {
  opacity: 0;
  transform: translateY(18px);
  animation: heroFadeUp 0.9s 0.3s ease forwards;
}
@keyframes heroFadeUp {
  to { opacity: 1; transform: translateY(0); }
}
.hero-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sage-lt);
  margin-bottom: 0.6rem;
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 400;
  color: var(--parchment);
  line-height: 1.05;
  margin-bottom: 0.75rem;
}
.hero-sub {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.8rem, 1.4vw, 1rem);
  color: rgba(240,234,216,0.7);
  letter-spacing: 0.04em;
}


/* ══════════════════════════════════════
   INTRO STRIP
══════════════════════════════════════ */
.intro-strip {
  background: var(--charcoal);
  color: var(--parchment);
  padding: clamp(2.5rem, 5vw, 3.5rem) clamp(1.5rem, 8vw, 6rem);
  display: flex;
  align-items: baseline;
  gap: clamp(2rem, 5vw, 4rem);
  flex-wrap: wrap;
}
.intro-text {
  flex: 1;
  min-width: 260px;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: rgba(240,234,216,0.82);
  line-height: 1.8;
  max-width: 72ch;
}
.intro-link {
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--terracotta);
  white-space: nowrap;
  transition: color 0.2s, letter-spacing 0.2s;
}
.intro-link:hover {
  color: var(--terra-lt);
  letter-spacing: 0.16em;
}


/* ══════════════════════════════════════
   PROJECTS SECTION
══════════════════════════════════════ */
.projects-section {
  padding: var(--section-pad) clamp(1.5rem, 6vw, 4rem);
  background: var(--parchment);
}
.section-heading {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--charcoal);
  margin-bottom: 2.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--parchment-dk);
  letter-spacing: 0.01em;
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5px;
  background: var(--parchment-dk);
  border: 1.5px solid var(--parchment-dk);
}
.project-card {
  background: var(--parchment);
  display: block;
  transition: background 0.25s;
}
.project-card:hover { background: var(--charcoal); }
.project-card:hover .project-tag   { color: var(--sage-lt); }
.project-card:hover .project-title { color: var(--parchment); }
.project-card:hover .project-desc  { color: rgba(240,234,216,0.65); }
.project-card:hover .project-arrow { color: var(--terracotta); transform: translateX(4px); }
.project-card-inner {
  padding: 2rem 1.75rem 1.75rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.project-tag {
  font-family: var(--font-body);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
  transition: color 0.25s;
}
.project-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.15rem;
  color: var(--charcoal);
  line-height: 1.25;
  transition: color 0.25s;
}
.project-desc {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.87rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
  transition: color 0.25s;
}
.project-arrow {
  display: inline-block;
  font-size: 1.1rem;
  color: var(--parchment-dk);
  margin-top: 0.5rem;
  transition: color 0.25s, transform 0.25s;
}


/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
.site-footer {
  background: var(--charcoal);
  padding: 1.75rem clamp(1.5rem, 6vw, 4rem);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--parchment);
}
.footer-affil {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: rgba(240,234,216,0.45);
  letter-spacing: 0.06em;
}
.footer-copy {
  margin-left: auto;
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: rgba(240,234,216,0.3);
}


/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 768px) {
  .nav-links,
  .nav-socials { display: none; }
  .hamburger   { display: flex; }
  .intro-strip { flex-direction: column; gap: 1.25rem; }
  .projects-grid { grid-template-columns: 1fr; }
}