/* =========================================================
   SECRET LIVES OF BIRDS
   An editorial field-journal, dark & cream, in the spirit
   of the great naturalist plate books.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=EB+Garamond:ital,wght@0,400;0,500;1,400&display=swap');

:root{
  --ink:      #100e0a;   /* deep warm black (dark sections) */
  --ink-2:    #17140f;
  --ink-3:    #1e1a13;
  --cream:    #e9e3d4;   /* aged paper (light sections)     */
  --cream-2:  #efeadc;
  --paper:    #e5dece;
  --line-dark:  rgba(233,227,212,0.22);
  --line-light: rgba(33,29,22,0.22);
  --on-dark:  #e7e1d2;
  --on-dark-dim: #b7ad98;
  --on-cream: #211d15;
  --on-cream-dim: #6a6151;
  --brass:    #b1895a;   /* faint warm accent               */
  --oxblood:  #7c4a3e;
  --serif:    'EB Garamond', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --display:  'Cormorant Garamond', 'Iowan Old Style', Georgia, serif;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; }
body{
  margin:0;
  font-family:var(--serif);
  background:var(--ink);
  color:var(--on-dark);
  font-size:18px;
  line-height:1.6;
  overflow-x:hidden;
}
img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }

/* ---------- shared typographic devices ---------- */
.label{
  font-family:var(--serif);
  text-transform:uppercase;
  letter-spacing:0.34em;
  font-size:11px;
  font-weight:500;
}
.rule{ height:1px; width:56px; background:currentColor; opacity:0.5; border:0; margin:0; }
.display{
  font-family:var(--display);
  font-weight:500;
  line-height:1.02;
  letter-spacing:0.01em;
}
.serif-italic{ font-family:var(--display); font-style:italic; }

/* subtle film-grain / vignette layered site-wide */
.grain{
  pointer-events:none; position:fixed; inset:0; z-index:60; mix-blend-mode:overlay; opacity:0.05;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* =========================================================
   NAV
   ========================================================= */
.nav{
  position:absolute; top:0; left:0; right:0; z-index:40;
  display:flex; align-items:center; justify-content:space-between;
  padding:34px clamp(22px,4vw,64px);
}
.nav.on-cream{ color:var(--on-cream); }
.brand{
  font-family:var(--display); font-size:15px; letter-spacing:0.24em;
  text-transform:uppercase; line-height:1.35; font-weight:600;
}
.nav-links{ display:flex; gap:clamp(20px,3vw,50px); align-items:center; }
.nav-links a{
  font-size:11px; letter-spacing:0.26em; text-transform:uppercase; opacity:0.82;
  transition:opacity .3s;
}
.nav-links a:hover{ opacity:1; }
.nav-links .journal{ display:inline-flex; gap:8px; align-items:center; }
.nav svg{ width:15px; height:15px; flex:0 0 auto; }
@media(max-width:820px){
  .nav-links a:not(.journal){ display:none; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center;
  background:#0b0a07;
  overflow:hidden;
}
.hero-media{ position:absolute; inset:0; }
.hero-media img{
  width:100%; height:100%; object-fit:cover; object-position:60% 42%;
  filter:brightness(0.82) contrast(1.05) saturate(0.92);
}
.hero-media::after{ /* mood overlay: dark on the left for text, darker again on the far right for the quote */
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(100deg, rgba(9,8,6,0.97) 0%, rgba(9,8,6,0.86) 26%,
                    rgba(9,8,6,0.5) 50%, rgba(9,8,6,0.4) 68%, rgba(9,8,6,0.82) 90%, rgba(9,8,6,0.92) 100%),
    radial-gradient(130% 95% at 34% 50%, transparent 38%, rgba(6,5,4,0.72) 100%);
}
.hero-inner{
  position:relative; z-index:5;
  width:100%;
  padding:0 clamp(22px,5vw,80px);
  display:grid; grid-template-columns:1.15fr 0.85fr; gap:40px; align-items:center;
}
.hero-title{
  font-size:clamp(46px,7.4vw,116px);
  letter-spacing:0.02em;
  margin:0 0 26px;
}
.hero-sub{
  font-family:var(--display); font-style:italic; font-size:clamp(20px,2.2vw,30px);
  color:var(--on-dark-dim); max-width:22ch; margin:0 0 40px; line-height:1.4;
}
.btn{
  display:inline-block; border:1px solid var(--line-dark);
  padding:16px 34px; font-size:11px; letter-spacing:0.3em; text-transform:uppercase;
  transition:background .4s, color .4s, border-color .4s;
}
.btn:hover{ background:var(--on-dark); color:var(--ink); border-color:var(--on-dark); }

.hero-quote{
  justify-self:end; max-width:280px; padding-left:26px;
  border-left:1px solid var(--line-dark);
}
.hero-quote p{
  font-family:var(--display); font-style:italic; font-size:16px; line-height:1.62;
  color:var(--on-dark-dim); margin:0 0 18px;
}
.hero-quote cite{ font-style:normal; font-size:12px; letter-spacing:0.18em; color:var(--on-dark-dim); }
.hero-quote .em{ color:var(--on-dark); font-style:italic; }
@media(max-width:900px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-quote{ display:none; }
}

/* =========================================================
   SPECIES  (light)
   ========================================================= */
.species{
  background:var(--cream); color:var(--on-cream);
  display:grid; grid-template-columns:1fr 1fr;
  min-height:100vh; position:relative;
}
.species-text{
  padding:clamp(60px,7vw,120px) clamp(30px,5vw,80px);
  display:flex; flex-direction:column; justify-content:center;
}
.species-text .label{ color:var(--on-cream-dim); margin-bottom:auto; }
.overline-row{ display:flex; justify-content:space-between; align-items:center;
  border-bottom:1px solid var(--line-light); padding-bottom:20px; margin-bottom:60px; }
.species h2{ font-size:clamp(38px,4.4vw,64px); margin:0 0 8px; text-transform:uppercase; letter-spacing:0.01em; }
.species .binomial{ font-family:var(--display); font-style:italic; font-size:22px; color:var(--on-cream-dim); margin:0 0 46px; }
.spec-grid{ display:grid; grid-template-columns:120px 1fr; gap:0 40px; align-items:start; }
.spec-terms{ display:flex; flex-direction:column; gap:14px; }
.spec-terms span{ font-size:11px; letter-spacing:0.26em; text-transform:uppercase; color:var(--on-cream-dim); }
.spec-body p{ margin:0 0 16px; max-width:36ch; }
.spec-body p:first-child{ font-family:var(--display); font-size:22px; font-style:italic; line-height:1.4; color:var(--on-cream); }
.measures{ display:flex; gap:clamp(30px,5vw,64px); margin-top:56px; padding-top:30px; border-top:1px solid var(--line-light); }
.measures div span{ display:block; font-size:10px; letter-spacing:0.24em; text-transform:uppercase; color:var(--on-cream-dim); margin-bottom:8px; }
.measures div strong{ font-family:var(--display); font-weight:500; font-size:26px; }
.species-media{ position:relative; background:var(--cream-2); overflow:hidden; display:flex; align-items:center; justify-content:center; }
.species-media img{ width:100%; height:100%; object-fit:cover; object-position:center; }
.view-gallery{ margin-top:46px; display:inline-flex; align-items:center; gap:16px; font-size:11px; letter-spacing:0.28em; text-transform:uppercase; }
.view-gallery .arrow{ width:52px; height:1px; background:currentColor; display:inline-block; }
@media(max-width:900px){
  .species{ grid-template-columns:1fr; }
  .species-media{ min-height:60vh; order:-1; }
}

/* =========================================================
   OBSERVATION (dark, image bg)
   ========================================================= */
.observation{
  position:relative; min-height:100vh; display:flex; align-items:center;
  color:var(--on-dark); overflow:hidden; background:#0c0b08;
}
.observation .bg{ position:absolute; inset:0; }
.observation .bg img{ width:100%; height:100%; object-fit:cover; object-position:center 60%;
  filter:brightness(0.7) contrast(1.05) saturate(0.9); }
.observation .bg::after{ content:""; position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(8,7,5,0.94) 0%, rgba(8,7,5,0.7) 34%, rgba(8,7,5,0.15) 62%, transparent 100%),
             linear-gradient(0deg, rgba(8,7,5,0.6), transparent 40%); }
.observation-inner{ position:relative; z-index:5; padding:clamp(60px,7vw,120px) clamp(30px,5vw,80px); max-width:640px; }
.obs-top{ display:flex; justify-content:space-between; align-items:center; margin-bottom:auto; }
.obs-top .no{ font-size:12px; letter-spacing:0.2em; color:var(--on-dark-dim); }
.observation h2{ font-size:clamp(34px,4.4vw,60px); text-transform:uppercase; margin:60px 0 6px; }
.observation .binomial{ font-family:var(--display); font-style:italic; font-size:20px; color:var(--on-dark-dim); margin:0 0 34px; }
.watch{ display:inline-flex; align-items:center; gap:16px; font-size:11px; letter-spacing:0.28em; text-transform:uppercase; margin-bottom:34px; }
.watch .arrow{ width:34px; height:1px; background:currentColor; }
.observation p.body{ font-family:var(--display); font-style:italic; font-size:clamp(19px,2vw,25px); line-height:1.5; max-width:34ch; color:#d9d1bf; }
.pager{ position:absolute; right:clamp(30px,5vw,80px); bottom:clamp(34px,5vw,56px); z-index:5; display:flex; gap:22px; font-size:12px; letter-spacing:0.16em; color:var(--on-dark-dim); }
.pager b{ color:var(--on-dark); font-weight:500; }

/* =========================================================
   FIELD NOTES (light, notebook)
   ========================================================= */
.field-notes{ background:var(--cream); color:var(--on-cream);
  display:grid; grid-template-columns:0.9fr 1.1fr; min-height:100vh; }
.notes-text{ padding:clamp(60px,7vw,110px) clamp(30px,4.5vw,70px); display:flex; flex-direction:column; }
.notes-text .label{ color:var(--on-cream-dim); margin-bottom:40px; }
.notes-text h2{ font-size:clamp(34px,4vw,56px); margin:0 0 40px; text-transform:uppercase; }
.notes-nav{ display:flex; gap:40px; font-size:11px; letter-spacing:0.24em; text-transform:uppercase; color:var(--on-cream-dim); border-top:1px solid var(--line-light); border-bottom:1px solid var(--line-light); padding:18px 0; margin-bottom:44px; }
.notes-nav a:hover{ color:var(--on-cream); }
.entry{ margin-bottom:34px; }
.entry .date{ font-size:10px; letter-spacing:0.24em; text-transform:uppercase; color:var(--brass); display:block; margin-bottom:10px; }
.entry p{ margin:0; max-width:34ch; color:#3b352b; }
.notes-media{ position:relative; overflow:hidden; background:var(--paper); }
.notes-media img{ width:100%; height:100%; object-fit:cover; object-position:center; filter:sepia(0.12) contrast(1.02); }
.notes-media figcaption{ position:absolute; left:22px; bottom:20px; right:22px; font-family:var(--display); font-style:italic; font-size:14px; color:#efe7d4; text-shadow:0 1px 8px rgba(0,0,0,.6); }
@media(max-width:900px){ .field-notes{ grid-template-columns:1fr; } .notes-media{ min-height:56vh; order:-1;} }

/* =========================================================
   PLATES — the naturalists' gallery
   ========================================================= */
.plates{ background:var(--ink-2); color:var(--on-dark); padding:clamp(80px,9vw,150px) clamp(24px,5vw,80px); }
.plates-head{ text-align:center; max-width:720px; margin:0 auto clamp(56px,7vw,90px); }
.plates-head .label{ color:var(--brass); }
.plates-head h2{ font-size:clamp(34px,5vw,66px); margin:24px 0 20px; }
.plates-head p{ font-family:var(--display); font-style:italic; font-size:clamp(18px,2vw,23px); color:var(--on-dark-dim); line-height:1.5; }
.plate-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(20px,2.5vw,40px); max-width:1400px; margin:0 auto; }
.plate{ }
.plate .frame{
  background:#efe9db; padding:14px; overflow:hidden;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.8);
  aspect-ratio:3/4;
}
.plate .frame img{ width:100%; height:100%; object-fit:cover; object-position:center 22%;
  transition:transform 1.1s cubic-bezier(.2,.7,.2,1); }
.plate:hover .frame img{ transform:scale(1.05); }
.plate .cap{ margin-top:18px; }
.plate .cap .t{ font-family:var(--display); font-size:20px; font-style:italic; }
.plate .cap .m{ font-size:10px; letter-spacing:0.2em; text-transform:uppercase; color:var(--on-dark-dim); margin-top:6px; }
@media(max-width:1000px){ .plate-grid{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:560px){ .plate-grid{ grid-template-columns:1fr; } }

/* =========================================================
   QUOTE + CHICKADEE
   ========================================================= */
.reverie{ background:var(--ink); color:var(--on-dark);
  display:grid; grid-template-columns:1fr 1fr; min-height:88vh; }
.reverie-quote{ padding:clamp(50px,7vw,110px) clamp(30px,5vw,80px); display:flex; flex-direction:column; justify-content:center; }
.reverie-quote blockquote{ margin:0; font-family:var(--display); font-size:clamp(30px,4vw,54px); line-height:1.15; }
.reverie-quote cite{ font-style:normal; font-size:13px; letter-spacing:0.2em; color:var(--on-dark-dim); margin-top:30px; display:block; }
.reverie-quote .about{ margin-top:48px; font-size:11px; letter-spacing:0.28em; text-transform:uppercase; display:inline-flex; align-items:center; gap:16px; }
.reverie-quote .about .arrow{ width:44px; height:1px; background:currentColor; }
.reverie-media{ overflow:hidden; }
.reverie-media img{ width:100%; height:100%; object-fit:cover; object-position:center;
  filter:brightness(0.9) contrast(1.05); }
@media(max-width:900px){ .reverie{ grid-template-columns:1fr; } .reverie-media{ min-height:56vh; } }

/* =========================================================
   JOURNAL ESSAY (light)
   ========================================================= */
.journal{ background:var(--cream); color:var(--on-cream); position:relative;
  display:grid; grid-template-columns:1fr 1fr; min-height:100vh; }
.journal .nav{ position:absolute; }
.journal-text{ padding:clamp(90px,10vw,150px) clamp(30px,5vw,80px) clamp(60px,7vw,110px); display:flex; flex-direction:column; justify-content:center; }
.journal-text .kicker{ font-size:11px; letter-spacing:0.24em; text-transform:uppercase; color:var(--on-cream-dim); margin-bottom:26px; }
.journal-text h2{ font-size:clamp(34px,4.4vw,58px); margin:0 0 34px; }
.journal-text p{ max-width:40ch; color:#3b352b; margin:0 0 20px; }
.journal-text p.lead::first-letter{ font-family:var(--display); font-size:76px; line-height:0.7; float:left; padding:8px 14px 0 0; color:var(--oxblood); }
.read-essay{ margin-top:34px; font-size:11px; letter-spacing:0.28em; text-transform:uppercase; display:inline-flex; align-items:center; gap:16px; }
.read-essay .arrow{ width:44px; height:1px; background:currentColor; }
.journal-media{ overflow:hidden; }
.journal-media img{ width:100%; height:100%; object-fit:cover; object-position:center;
  filter:sepia(0.15) brightness(0.96) contrast(1.02); }
@media(max-width:900px){ .journal{ grid-template-columns:1fr; } .journal-media{ min-height:56vh; order:-1; } }

/* =========================================================
   FOOTER
   ========================================================= */
.footer{ background:var(--ink); color:var(--on-dark); padding:clamp(70px,8vw,120px) clamp(30px,5vw,80px) 46px; }
.footer-top{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:40px;
  border-bottom:1px solid var(--line-dark); padding-bottom:56px; }
.footer .brand-lg{ font-family:var(--display); font-size:clamp(30px,4vw,50px); max-width:12ch; line-height:1.05; }
.footer-cols{ display:flex; gap:clamp(40px,6vw,90px); flex-wrap:wrap; }
.footer-cols h4{ font-size:10px; letter-spacing:0.26em; text-transform:uppercase; color:var(--on-dark-dim); margin:0 0 20px; font-weight:500; }
.footer-cols ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:12px; }
.footer-cols a{ font-family:var(--display); font-size:19px; color:var(--on-dark); opacity:0.85; }
.footer-cols a:hover{ opacity:1; color:var(--brass); }
.footer-bottom{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:16px; margin-top:34px;
  font-size:11px; letter-spacing:0.14em; color:var(--on-dark-dim); }
.footer-bottom a{ text-decoration:underline; text-underline-offset:3px; }

/* =========================================================
   reveal-on-scroll
   ========================================================= */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity 1.1s cubic-bezier(.2,.7,.2,1), transform 1.1s cubic-bezier(.2,.7,.2,1); }
.reveal.in{ opacity:1; transform:none; }
@media(prefers-reduced-motion:reduce){ .reveal{ opacity:1; transform:none; transition:none; } html{scroll-behavior:auto;} }