/* ==========================================================================
   Bend Night Sky Alliance — shared stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;700&display=swap');

:root{
  --bg:        #0A0D12;
  --bg-raise:  #12161F;
  --bg-raise-2:#171C28;
  --line:      rgba(241,233,216,0.10);
  --line-soft: rgba(241,233,216,0.06);

  --cream:     #F1E9D8;
  --cream-dim: #B9B2A2;
  --cream-mute:#8A8578;

  --gold:      #C79A3C;
  --gold-bright:#E0B85C;
  --gold-dim:  #8A6E2C;

  --blue:      #7E9DBD;
  --blue-dim:  #4E6E8E;

  --white:     #FFFFFF;

  --radius: 3px;
  --max: 1120px;

  --serif: 'Fraunces', Georgia, serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:  'IBM Plex Mono', ui-monospace, monospace;

  --glow-opacity: 0.22;
  --dark-opacity: 0;

  --mw-opacity: 0;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--cream);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }

h1,h2,h3{
  font-family: var(--serif);
  color: var(--cream);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}
h1{ font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 400; }
h2{ font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3{ font-size: 1.25rem; }
p{ margin: 0 0 1em; }

.wrap{ max-width: var(--max); margin: 0 auto; padding: 0 28px; }

.eyebrow{
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-bright);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  width: 18px; height: 1px;
  background: var(--gold-dim);
}

/* ---------- header / nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(10,13,18,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height: 90px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height: 80px; width:auto; }
.brand-name{
  font-family: var(--serif); color: var(--cream);
  font-size: 1rem; letter-spacing: 0.02em;
  line-height: 1.15;
}
.brand-name small{
  display:block; font-family: var(--mono); font-size: 0.62rem;
  color: var(--gold); letter-spacing: 0.14em; margin-top: 3px;
}

.nav-links{ display:flex; gap: 2px; align-items:center; }
.nav-links a{
  font-size: 1rem; padding: 10px 16px; border-radius: var(--radius);
  color: var(--cream-dim); transition: color .15s ease, background .15s ease;
}
.nav-links a:hover{ color: var(--cream); background: var(--bg-raise); }
.nav-links a.current{ color: var(--gold-bright); }

.nav-toggle{ display:none; background:none; border:1px solid var(--line); color: var(--cream); width:40px; height:40px; border-radius:var(--radius); }

@media (max-width: 860px){
  .nav-links{
    position:absolute; top:90px; left:0; right:0;
    flex-direction:column; align-items:stretch;
    background: var(--bg-raise);
    border-bottom:1px solid var(--line);
    padding: 8px; gap:0;
    display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding: 14px 16px; }
  .nav-toggle{ display:block; }
}

/* ---------- hero / starfield ---------- */
.hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  padding: 96px 0 84px;
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, #0A0D12 0%, #0A0D12 70%, #0D1117 100%);
  z-index:0;
}
#starfield{ position:absolute; inset:0; width:100%; height:100%; z-index:0; }
.hero .wrap{ position: relative; z-index: 1; }

.hero-ridge{
  position:absolute; left:0; right:0; bottom:-2px; z-index:1;
  height: 120px;
  background: linear-gradient(180deg, transparent, var(--bg) 92%);
}
.hero-ridge svg{ position:absolute; bottom:0; width:100%; height:100%; }

.page-hero .hero-ridge{ z-index:0; }

.hero h1{ max-width: 15ch; }
.hero .lede{ max-width: 52ch; font-size: 1.08rem; color: var(--cream); }

.btn-row{ display:flex; gap:14px; flex-wrap:wrap; margin-top: 32px; }
.btn{
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 14px 24px; border-radius: var(--radius);
  border: 1px solid var(--gold-dim); transition: all .15s ease;
  display:inline-block;
}
.btn.primary{ background: var(--gold); border-color: var(--gold); color: #0A0D12; font-weight: 600; }
.btn.primary:hover{ background: var(--gold-bright); border-color: var(--gold-bright); }
.btn.ghost{ color: var(--cream); }
.btn.ghost:hover{ border-color: var(--cream-mute); color: var(--cream); }

/* ---------- bortle widget (signature element) ---------- */
.bortle{
  margin-top: 56px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(23,28,40,0.7), rgba(18,22,31,0.7));
  padding: 30px 34px;
  max-width: 660px;
  position: relative; z-index: 2;
}
.bortle-row{ display:flex; align-items:center; gap: 4px; margin-top:16px; }
.bortle-seg{
  flex:1; height:11px; border-radius:2px; background: var(--bg-raise-2); position:relative;
  border: 1px solid var(--line);
  cursor: pointer; transition: background-color 0.25s ease, transform 0.15s ease, border-color 0.25s ease;
}
.bortle-seg:hover{ transform: scaleY(1.4); }
.bortle-seg.active{ background: var(--gold-dim); }
.bortle-seg.bend{ background: var(--gold); }
.bortle-seg.selected{ box-shadow: 0 0 0 2px var(--gold-bright); z-index: 1; }

/* Fixed marker for Bend's actual reading — stays put regardless of what's selected */
.bortle-seg.bend::after{
  content:''; position:absolute; top:-7px; left:50%; transform:translateX(-50%);
  width:0; height:0; border-left:4px solid transparent; border-right:4px solid transparent;
  border-top:5px solid var(--blue);
}

.bortle-labels{ display:flex; justify-content:space-between; font-family: var(--mono); font-size:0.66rem; color: var(--cream); margin-top:8px; letter-spacing:0.04em; }
.bortle-caption{
  margin: 14px 0 0; font-size: 0.95rem; color: var(--cream);
  min-height: 1.4em; transition: opacity 0.2s ease;
}

/* Sky-brightness preview overlays — both default to invisible (0 opacity),
   so the page renders identically to before until someone clicks a bar */
.sky-glow-warm{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(ellipse 85% 60% at 50% 100%, rgba(224,184,92,0.95), rgba(190,150,80,0.5) 40%, transparent 72%),
    linear-gradient(0deg, rgba(190,150,80,0.6) 0%, transparent 45%);
  opacity: var(--glow-opacity);
  transition: opacity 0.6s ease;
}
.sky-glow-dark{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background: radial-gradient(ellipse 80% 70% at 50% 25%, rgba(0,0,0,0.9), transparent 75%);
  opacity: var(--dark-opacity);
  transition: opacity 0.6s ease;
}

/* https://images-assets.nasa.gov/image/art002e012588/art002e012588~large.jpg */
.milky-way-photo{
  position:absolute; inset:0;
  z-index:0; pointer-events:none;
  background-image: url('milky-way.jpg');
  background-size: cover;
  background-position: 45% 40%;
  mix-blend-mode: screen;
  filter: brightness(0.85) saturate(0.8);
  opacity: var(--mw-opacity);
  transition: opacity 0.6s ease;
}

/* ---------- sections ---------- */
section{ padding: 84px 0; }
section.raised{ background: var(--bg-raise); border-top:1px solid var(--line-soft); border-bottom:1px solid var(--line-soft); }
.section-head{ max-width: 62ch; margin-bottom: 48px; }

.grid{ display:grid; gap: 24px; }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px){ .grid-3, .grid-2{ grid-template-columns: 1fr; } }
@media (max-width: 560px){ .stats-grid{ grid-template-columns: 1fr; } }

.card{
  border:1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raise); padding: 28px;
}
.card .eyebrow{ margin-bottom: 18px; }
.card p:last-child{ margin-bottom:0; }

.stat{ border-top:1px solid var(--line); padding-top:16px; }
.stat b{ display:block; font-family: var(--sans); font-size: 2.2rem; color: var(--gold-bright); font-weight:600; }
.stat span{ font-family: var(--sans); font-size:0.78rem; color: var(--cream); letter-spacing: 0.03em; text-transform:uppercase; }

.quote{
  font-family: var(--serif); font-size: 1.5rem; color: var(--cream);
  font-weight: 400; line-height:1.4; max-width: 46ch;
}

.split{ display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:start; }
@media (max-width: 860px){ .split{ grid-template-columns: 1fr; gap:32px; } }

.divider{ height:1px; background: var(--line); border:0; margin: 0; }

ul.plain{ margin:0; padding:0; list-style:none; }
ul.plain li{ padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
ul.plain li:last-child{ border-bottom:0; }

.project-card{
  border:1px solid var(--line); border-radius: var(--radius); overflow:hidden;
  background: var(--bg-raise); display:flex; flex-direction:column;
}
.project-status{
  font-family: var(--mono); font-size:0.66rem; letter-spacing:0.08em; text-transform:uppercase;
  padding: 4px 10px; border-radius: 20px; display:inline-block; width:fit-content;
}
.project-status.active{ background: rgba(199,154,60,0.14); color: var(--gold-bright); border:1px solid rgba(199,154,60,0.3); }
.project-status.done{ background: rgba(126,157,189,0.14); color: var(--blue); border:1px solid rgba(126,157,189,0.3); }
.project-status.planned{ background: rgba(241,233,216,0.06); color: var(--cream-mute); border:1px solid var(--line); }
.project-card .body{ padding: 26px; display:flex; flex-direction:column; gap:12px; flex:1; }

form label{ display:block; font-family:var(--mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.08em; color: var(--cream-mute); margin-bottom:8px; }
form input, form textarea, form select{
  width:100%; background: var(--bg); border:1px solid var(--line); border-radius: var(--radius);
  color: var(--cream); padding: 12px 14px; font-family: var(--sans); font-size: 0.95rem; margin-bottom: 20px;
}
form input:focus, form textarea:focus, form select:focus{ outline: 2px solid var(--gold-dim); outline-offset: 2px; border-color: var(--gold-dim); }
form textarea{ min-height: 130px; resize: vertical; }

:focus-visible{ outline: 2px solid var(--gold); outline-offset: 2px; }

/* ---------- footer ---------- */
footer{ border-top:1px solid var(--line-soft); padding: 48px 0 36px; }
footer .wrap{ display:flex; justify-content:space-between; align-items:flex-end; gap:24px; flex-wrap:wrap; }
footer .foot-brand{ font-family: var(--serif); color: var(--cream); font-size:1rem; }
footer .foot-links{ display:flex; gap:22px; flex-wrap:wrap; }
footer .foot-links a{ font-size:0.85rem; color: var(--cream-dim); }
footer .foot-links a:hover{ color: var(--gold); }
footer .foot-meta{ font-family: var(--mono); font-size:0.68rem; color: var(--cream-mute); letter-spacing:0.04em; margin-top: 18px; }

/* ---------- page hero (interior pages) ---------- */
.page-hero{ padding: 64px 0 56px; border-bottom:1px solid var(--line-soft); }
.page-hero .lede{ max-width: 60ch; }
/*
.page-hero{ padding: 64px 0 56px; border-bottom:1px solid var(--line-soft); position:relative; overflow:hidden; }
.page-hero::before{
  content:""; position:absolute; inset:0;
  background: radial-gradient(ellipse 50% 60% at 15% 0%, rgba(126,157,189,0.10), transparent 60%);
}
.page-hero .wrap{ position:relative; }
.page-hero .lede{ max-width: 60ch; }
*/

/* ---------- interactive map ---------- */
#bnsa-map{
  width: 100%; height: 640px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raise);
}
@media (max-width: 860px){ #bnsa-map{ height: 480px; } }

.leaflet-popup-content-wrapper{
  background: var(--bg-raise-2); color: var(--cream-dim);
  border: 1px solid var(--line); border-radius: var(--radius);
  font-family: var(--sans); font-size: 0.82rem;
}
.leaflet-popup-content{ margin: 12px 14px; line-height: 1.5; }
.leaflet-popup-content strong{ color: var(--cream); font-family: var(--serif); font-size: 0.95rem; }
.leaflet-popup-content .pk{ color: var(--gold); font-family: var(--mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.03em; }
.leaflet-popup-tip{ background: var(--bg-raise-2); }
.leaflet-container a.leaflet-popup-close-button{ color: var(--cream-mute); }
.leaflet-control-layers{
  background: var(--bg-raise-2) !important; color: var(--cream-dim) !important;
  border: 1px solid var(--line) !important; border-radius: var(--radius) !important;
  font-family: var(--sans); font-size: 0.82rem; line-height: 1.0 !important;
}
.leaflet-control-layers-list label{ margin-bottom: 4px; }
.leaflet-control-attribution{
  background: rgba(10,13,18,0.75) !important; color: var(--cream-mute) !important;
  font-size: 0.65rem !important;
}
.leaflet-control-attribution a{ color: var(--blue) !important; }
.leaflet-control-zoom a{
  background: var(--bg-raise-2) !important; color: var(--cream) !important;
  border-color: var(--line) !important;
}
.leaflet-control-zoom a:hover{ background: var(--bg-raise) !important; }

.leaflet-control-layers-expanded{
  padding: 0px 14px !important;
  min-width: 0 !important;
  width: 310px !important;
}

.leaflet-control-layers-list{
  margin-top: 0 !important;
  padding: 10px !important;
}
.leaflet-control-layers-overlays label{
  margin: 5px 0 !important;
}

.map-legend{
  display:flex; flex-wrap:wrap; gap:18px; margin-top:18px;
  padding: 16px 20px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raise); width: fit-content;
  font-family: var(--mono); font-size: 0.82rem; color: var(--cream); letter-spacing:0.03em;
}
.map-legend span{ display:inline-flex; align-items:center; gap:9px; }
.map-legend i{ width:13px; height:13px; border-radius:50%; display:inline-block; }

/* ---------- partners ---------- */
.partner-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
@media (max-width: 860px){ .partner-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .partner-grid{ grid-template-columns: 1fr; } }

.partner-card{
  border:1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raise); padding: 28px 24px;
  display:flex; flex-direction:column; align-items:center; text-align:center; gap:18px;
}
.partner-logo{
  width:100%; height:200x; display:flex; align-items:center; justify-content:center;
  background: var(--white); border-radius: var(--radius); padding: 14px;
}
/*.partner-logo img{
  max-width: 200px; max-height: 200px; width:auto; height:auto; object-fit:contain;
}*/
.partner-logo.placeholder{
  border:1px dashed var(--line); border-radius: var(--radius);
  color: var(--cream-mute); font-family: var(--mono); font-size:0.68rem;
  letter-spacing:0.04em; text-transform:uppercase;
}
.partner-name{ font-family: var(--serif); color: var(--cream); font-size:1.05rem; }

.btn-pill{
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 10px 26px; border-radius: 999px;
  border: 1px solid var(--gold); color: var(--gold-bright);
  transition: all .15s ease; display:inline-block;
}
.btn-pill:hover{ background: var(--gold); color: #0A0D12; }

/* ---------- chart card (for Python/matplotlib SVG output) ---------- */
.chart-card{
  /* background: var(--cream); */
  background: var(--bg); 
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--line);
}
.chart-card img{
  width: 100%;
  height: auto;
  display: block;
}