:root{
  --bg: #2ab9ce;
  --ink: #0b0b0b;
  --paper: #ffffff;
  --donate: #2f1963;

  --max: 1200px;
  --padX: 20px;
  --headerH: 88px;

  --radius: 10px;
  --font: "Saira Condensed", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{ background: var(--paper); color: var(--ink); font-family: var(--font); }

/* Sticky header */
.header{
  position: sticky;
  top: 0;
  z-index: 9999;
  background: var(--paper);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.header.is-scrolled{
  box-shadow: 0 8px 22px rgba(0,0,0,0.08);
}

.nav-shell{
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px var(--padX);
  min-height: var(--headerH);
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 18px;
}

/* Brand */
.brand{
  display:inline-flex;
  align-items:center;
  text-decoration:none;
}
.brand__logo{ height: 60px; width:auto; display:block; }
.brand__logo--mobile{ display:none; }

/* Right cluster: nav near donate */
.right{
  display:flex;
  align-items:center;
  gap: 22px; /* distance between nav group and donate/burger */
}

/* Nav */
.nav{
  display:flex;
  align-items:center;
  gap: clamp(16px, 1.7vw, 28px);
}

.nav__link{
  text-decoration:none;
  color: var(--ink);
  font-weight: 500; /* Medium */
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: clamp(14px, 1.05vw, 18px);
  padding: 10px 2px;
  line-height:1;
  opacity: 0.92;
  position: relative;
}
.nav__link:hover{ opacity:1; }
.nav__link::after{
  content:"";
  position:absolute;
  left:0; bottom:2px;
  width:0%;
  height:2px;
  background: rgba(0,0,0,0.75);
  transition: width .18s ease;
}
.nav__link:hover::after{ width:100%; }

/* Donate button */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  text-decoration:none;
  border-radius: var(--radius);
  font-weight: 600; /* SemiBold */
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height:1;
  user-select:none;
  -webkit-tap-highlight-color: transparent;
}

.btn--donate{
  background: var(--donate);
  color:#fff;
  padding: 12px 18px;
  font-size: clamp(14px, 1.0vw, 18px);
}

/* Focus */
.btn--donate:focus-visible,
.nav__link:focus-visible,
.burger:focus-visible,
.mobile__link:focus-visible{
  outline: 3px solid rgba(47,25,99,0.35);
  outline-offset: 3px;
}

/* Burger */
.burger{
  display:none;
  width: 34px;
  height: 26px;
  background: transparent;
  border: 0;
  padding: 0;
  cursor:pointer;
  flex-direction: column;
  justify-content: space-between;
}
.burger span{
  width:100%;
  height:4px;
  background:#000;
  border-radius: 999px;
  transition: transform .20s ease, opacity .16s ease;
  transform-origin:center;
}
.burger.active span:nth-child(1){ transform: rotate(45deg) translate(7px, 7px); }
.burger.active span:nth-child(2){ opacity: 0; }
.burger.active span:nth-child(3){ transform: rotate(-45deg) translate(7px, -7px); }

/* Mobile menu */
.mobile{
  border-top: 1px solid rgba(0,0,0,0.06);
  background: var(--paper);
  overflow: clip;
  max-height: 0;
  opacity: 0;
  transform: translateY(-6px);
  transition: max-height .22s ease, opacity .18s ease, transform .18s ease;
}
.mobile.open{
  max-height: 420px;
  opacity: 1;
  transform: translateY(0);
}
.mobile__nav{
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--padX) 20px;
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.mobile__link{
  text-decoration:none;
  color: var(--ink);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 18px;
  padding: 10px 0;
}
.btn--donateMobile{
  margin-top: 8px;
  padding: 14px 18px;
  width: 180px;
}

/* Hero layout: text left, big logo right */
.hero{
  min-height: calc(100vh - var(--headerH));
  background: var(--bg);
  display:flex;
  align-items:center;
}
.hero__inner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--padX);
  width: 100%;
  display:grid;
  grid-template-columns: 1.25fr 0.75fr; /* left text bigger, right logo */
  align-items: center;
  gap: clamp(18px, 3vw, 48px);
  color:#fff;
}

.hero__title{
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: clamp(34px, 4.6vw, 64px);
  line-height: 1.02;
  margin-bottom: 18px;
}
.hero__subtitle{
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: clamp(28px, 4.0vw, 56px);
  line-height: 1.02;
  margin-bottom: 18px;
}
.hero__note{
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: clamp(14px, 1.4vw, 20px);
  opacity: 0.95;
}

.hero__thanks{
  margin-top: 10px;
  font-weight: 500; /* Saira Condensed Medium */
  letter-spacing: 0.04em;
  font-size: clamp(12px, 1.1vw, 16px);
  opacity: 0.85;
}



.hero__mark{
  display:flex;
  align-items:center;
  justify-content:center;
}
.hero__logo{
  width: min(600px, 50vw);
  height: auto;
  display:block;
  opacity: 0.95;
}

/* Responsive */
@media (max-width: 900px){
  .nav{ display:none; }
  .btn--donate{ display:none; }
  .burger{ display:flex; }

  .brand__logo--desktop{ display:none; }
  .brand__logo--mobile{ display:block; height: 80px; }

  .right{ gap: 10px; }

  /* Hero stacks */
  .hero__inner{
   grid-template-columns: 1.25fr 0.75fr; /* left text bigger, right logo */

    gap: 22px;
  }
  .hero__mark{
    justify-content: center;
  }
  .hero__logo{
    width: min(220px, 60vw);
  }
}

@media (max-width: 500px){
  .hero__inner{
    grid-template-columns: 1fr;
    gap: 22px;
  }
}