/* Base */
:root{
  --bg: #ffffff;
  --text: #1b1b1b;
  --muted: #5b635e;
  --brand: #0b6b53;
  --brand-2:#168e70;
  --alt:#f4fbf8;
  --card:#ffffff;
  --border:#e6efe9;
  --focus: #ffbf47;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Inter,Ubuntu,system-ui,sans-serif;
  line-height:1.6;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;border-radius:.5rem}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

.container{
  width:min(1100px, 92%);
  margin-inline:auto;
}

.section{padding:4rem 0}
.section--alt{background:var(--alt)}

h1,h2,h3{line-height:1.2;margin:0 0 .75rem}
.lead{font-size:1.15rem;color:var(--muted)}

.btn{
  display:inline-block;
  border:2px solid var(--brand);
  background:var(--brand);
  color:#fff;
  padding:.7rem 1rem;
  border-radius:.7rem;
  font-weight:600;
  cursor:pointer;
  transition:transform .06s ease, background .2s;
}
.btn:hover{transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--brand)}
.btn--secondary{background:var(--brand-2);border-color:var(--brand-2)}
.btn--primary{background:var(--brand);border-color:var(--brand)}

.muted{color:var(--muted)}

.skip-link{
  position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{
  position:static;width:auto;height:auto;padding:.5rem;background:#000;color:#fff;z-index:1000;
}

/* Header */
.site-header{
  position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:10;
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:.75rem 0}
.brand{display:flex;gap:.6rem;align-items:center;font-weight:800;color:inherit}
.brand__name{font-size:1.05rem}
.site-nav ul{display:flex;gap:1rem;align-items:center;margin:0;padding:0;list-style:none}
.nav-toggle{display:none;border:2px solid var(--border);background:#fff;border-radius:.5rem;padding:.3rem .6rem}

/* Hero */
.hero{
  padding-top: 0.25rem;padding:2rem 0 2.5rem;background:linear-gradient(180deg,#ffffff, #f0faf6 60%)}
.hero h1{margin-top:0}

.hero__content{display:grid;grid-template-columns:1.1fr .9fr;gap:2rem;align-items:center}
.hero__cta{display:flex;gap:.75rem;margin-top:1rem}
.hero__media img{aspect-ratio:4/3;object-fit:cover}
.accent{color:var(--brand-2)}
.trust-badges{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1rem;color:var(--muted);font-size:.95rem}

/* Grid & Cards */
.grid{display:grid;gap:1.5rem}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:1rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:1rem;padding:1rem;box-shadow:0 1px 0 rgba(0,0,0,.03)}
.card__body h3{margin-top:.25rem}
.card__link{font-weight:600}

/* Mission */
.mission-card{background:linear-gradient(180deg,#e9fbf3,#ffffff);border:1px solid var(--border);border-radius:1rem;padding:1.2rem}
.checklist{padding-left:1.1rem}
.checklist li{margin:.25rem 0}

/* Impact */
.impact{margin-top:1rem}
.impact__item{background:#fff;border:1px solid var(--border);border-radius:1rem;padding:1rem;text-align:center}
.impact__num{font-size:2rem;font-weight:800;color:var(--brand)}

/* Forms */
.form .form__row{display:flex;flex-direction:column;margin:.5rem 0}
label{font-weight:600}
input,select,textarea{
  border:1.5px solid var(--border);
  border-radius:.6rem;
  padding:.7rem .8rem;
  font:inherit;
}
input:focus,select:focus,textarea:focus{outline:3px solid var(--focus);outline-offset:2px}
.error{color:#a12727}
.form__success{color:#0a6f4f;font-weight:600}
.donate__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;margin:.5rem 0}

/* Timeline */
.timeline{display:grid;gap:1rem;margin-top:1rem}
.timeline__item{border-left:4px solid var(--brand);padding-left:1rem}

/* Footer */
.site-footer{background:#0e1f19;color:#dfece8;padding-top:2rem}
.site-footer a{color:#a8f0d2}
.footer__grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1rem;align-items:center}
.brand--footer{display:flex;align-items:center;gap:.6rem;font-weight:800}
.footer__links{list-style:none;margin:0;padding:0;display:flex;gap:.75rem;flex-wrap:wrap}
.footer__legal{border-top:1px solid #254d40;margin-top:1rem;padding:1rem 0;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.toggles .btn{border-color:#254d40;background:transparent;color:#dfece8}

/* Responsive */
@media (max-width: 980px){
  .hero__content{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr}
}
@media (max-width: 680px){
  .nav-toggle{display:block}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);display:none}
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column;align-items:flex-start;padding:1rem}
  .cards{grid-template-columns:1fr}
  .grid--2{grid-template-columns:1fr}
}

/* High contrast mode */
body.hc{
  --bg:#000;
  --text:#fff;
  --muted:#cbd5d0;
  --brand:#ffbf47;
  --brand-2:#ffd37c;
  --alt:#151515;
  --card:#0e0e0e;
  --border:#333;
  --focus:#00c2ff;
}