/* Vibrant Earth & Ocean Theme for pgsdf.org */
:root{
  --bg: #1A3A3A;        /* deep ocean teal */
  --bg-alt: #2C5F5F;    /* rich teal-green */
  --text: #F5F1E8;      /* warm cream */
  --muted: #C8D5C8;     /* soft sage */
  --heading: #7FD4A8;   /* fresh mint green */
  --accent: #E8945F;    /* warm coral */
  --cta: #4A90A4;       /* vibrant sky blue */
  --sage: #92C9B1;      /* seafoam green for links */
  --card: #234646;      /* deep teal card */
  --ring: #7FD4A8;
  --shadow: 0 14px 34px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
html, body { margin:0; padding:0; }
body{
  background: var(--bg);
  color: var(--text);
  font-family: "Lato", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

h1, h2, h3{
  font-family: "Playfair Display", Georgia, serif;
  color: var(--heading);
  line-height: 1.25;
  margin: 0 0 .5em;
}
p{ margin: .5em 0 1em; }

a{ color: var(--sage); text-decoration:none; }
a:hover{ color: var(--accent); }

.container{
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 0;
}

/* ---------- HEADER ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, rgba(15,30,30,.95), rgba(26,58,58,.90));
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(127,212,168,.25);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:.75rem;
  text-decoration:none;
  color: var(--text);
  font-weight: 600;
}
.logo-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background: #F5F1E8;
  padding: .35rem .5rem;
  border-radius: .6rem;
  border: 1px solid rgba(127,212,168,.3);
  box-shadow: 0 6px 16px rgba(0,0,0,.3);
}
.brand .logo{ height: 40px; width: auto; display:block; }
.logo.small{ height: 28px; }

.nav { display:flex; align-items:center; gap:.75rem; }
.nav a{ text-decoration:none; font-weight:600; padding:.4rem .6rem; border-radius:.5rem; }
.nav a:hover{ background: rgba(127,212,168,.12); }

/* --- GitHub & Support buttons --- */
.nav .btn.btn-secondary {
  background: var(--accent);
  color: #FFFFFF;
  border: 1px solid rgba(127,212,168,0.3);
  font-weight: 700;
}
.nav .btn.btn-secondary:hover {
  background: var(--heading); /* mint green hover */
  color: #0F2828; /* dark text on bright green */
  border-color: var(--heading);
  transition: all 0.2s ease;
}

.nav .btn.btn-primary {
  background: var(--cta);
  color: #FFFFFF;
  border-color: transparent;
}
.nav .btn.btn-primary:hover {
  filter: brightness(1.15);
}

/* ---------- HERO ---------- */
.hero{
  position: relative;
  padding: 8rem 0 6rem;
  background:
  radial-gradient(80% 60% at 50% 10%, rgba(74,144,164,.4), transparent 70%),
  radial-gradient(40% 30% at 15% 20%, rgba(127,212,168,.25), transparent 60%),
  linear-gradient(180deg, #2C5F5F 0%, #1A3A3A 60%);
  overflow:hidden;
}
.hero-inner{ text-align:center; }
.lead{ font-size: 1.15rem; max-width: 58ch; margin: .5rem auto 1.25rem; color: var(--text); }
.cta-row{ display:flex; gap:.75rem; justify-content:center; flex-wrap:wrap; }

/* Waves */
.dune{
  position:absolute;
  bottom:-20px;
  height:120px;
  border-radius: 50% 50% 0 0;
  transform: translateY(25px);
  filter: blur(1px);
}
.dune-1{ left:-5%; width:60%; background: #2C5F5F; }
.dune-2{ right:-10%; width:55%; background: #1E4B4B; height: 140px; bottom:-30px; }
.dune-3{ left:35%; width:40%; background: #234646; height: 110px; bottom:-15px; }

/* ---------- SECTIONS ---------- */
.section{ padding: 4rem 0; }
.section.alt{ background: var(--bg-alt); }

.section-head{ margin-bottom: 1.25rem; }
.section-head p.muted{ color: var(--muted); }

.grid.two{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 840px){
  .grid.two{ grid-template-columns: 1fr; }
}

/* Lists */
.checklist{ padding-left: 1.2rem; }
.checklist li{ margin:.25rem 0; }

/* ---------- PROJECT CARDS ---------- */
.card-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 1000px){
  .card-grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px){
  .card-grid{ grid-template-columns: 1fr; }
}

.card{
  background: var(--card);
  border: 1px solid rgba(127,212,168,.25);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: var(--shadow);
  display:flex;
  flex-direction:column;
  gap:.5rem;
  transition: transform .12s ease, box-shadow .12s ease;
}
.card:hover{ transform: translateY(-2px); box-shadow: 0 16px 30px rgba(0,0,0,.5); }
.card h3{ margin:.25rem 0; }
.card .meta{ font-size: .9rem; color: var(--muted); }

/* ---------- BOXES ---------- */
.box{
  background: var(--card);
  border: 1px solid rgba(127,212,168,.25);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
}

/* ---------- FOOTER ---------- */
.site-footer{
  background: #0F2828;
  color: #F5F1E8;
  padding: 2rem 0;
}
.footer-inner{
  display:grid;
  gap:1rem;
  grid-template-columns: 1.2fr 1fr 1fr;
  align-items:center;
}
@media (max-width: 900px){
  .footer-inner{ grid-template-columns: 1fr; text-align:center; }
  .foot-brand{ justify-content:center; }
}
.foot-brand{ display:flex; align-items:center; gap:.75rem; }
.foot-links{ display:flex; gap: 1rem; justify-content:flex-end; }
.foot-links a{ color: #C8D5C8; text-decoration:none; }
.foot-links a:hover{ color: #7FD4A8; }
.foot-copy{ text-align:right; color:#C8D5C8; }
@media (max-width: 900px){
  .foot-links, .foot-copy{ justify-content:center; text-align:center; }
}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-block;
  padding:.7rem 1rem;
  border-radius:.75rem;
  text-decoration:none;
  font-weight:700;
  border: 2px solid transparent;
}
.btn-primary{
  background: var(--cta);
  color: #FFFFFF;
  border-color: transparent;
}
.btn-primary:hover{ filter: brightness(1.1); }

.btn-secondary{
  background: var(--accent);
  color: #FFFFFF;
  border: 1px solid rgba(127,212,168,0.3);
}
.btn-secondary:hover{
  background: var(--heading);
  color: #0F2828;
  border-color: var(--heading);
}

.btn-outline{
  color: var(--heading);
  border-color: var(--heading);
  background: transparent;
}
.btn-outline:hover{
  background: rgba(127,212,168,.12);
}

/* ---------- UTILITIES ---------- */
.center{ text-align:center; }
.muted{ color: var(--muted); }