:root {
  --orange: #f36c21;
  --orange-dark: #e65f12;
  --white: #ffffff;
  --text: #1a1a1a;
  --muted: #555;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: inherit;
}

main {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* HERO */
.hero {
  background: var(--orange);
  color: var(--white);
  padding: 72px 24px;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
  align-items: center;
}

.hero h1 {
  margin: 0 0 12px 0;
  font-size: clamp(36px, 4.2vw, 56px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0 0 28px 0;
  font-size: clamp(16px, 1.5vw, 20px);
  opacity: 0.95;
}

.buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--white);
  color: var(--orange);
  text-decoration: none;
  font-weight: 700;
  border: 2px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.btn:focus,
.btn:hover {
  border-color: #fff;
  outline: none;
  transform: translateY(-1px);
}

.btn.secondary {
  background: transparent;
  color: #fff;
  border-color: #fff;
}

.hero-art {
  width: 100%;
  max-width: 520px;
  justify-self: end;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.25));
}

/* FEATURE GRID */
.features {
  padding: 72px 24px;
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 28px;
}

.section-heading {
  grid-column: 1 / -1;
  margin: 0 0 6px 0;
  font-size: clamp(24px, 2.6vw, 32px);
  letter-spacing: -0.01em;
}

.feature {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: start;
}

.feature i {
  font-size: 28px;
  color: var(--orange);
}

.feature h3 {
  margin: 0 0 6px 0;
  font-size: 20px;
}

.feature p {
  margin: 0;
  color: var(--muted);
}

/* MID INFO */
.mid {
  background: var(--orange);
  color: var(--white);
  padding: 56px 24px;
}

.mid-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: stretch;
}

.mid-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}

.mid-card h2 {
  margin: 0;
  font-size: clamp(24px, 2.4vw, 34px);
}

.mid-card p {
  margin: 0;
}

.mid-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

.donation-address {
  word-break: break-all;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 14px;
}

.donation-qr {
  width: 140px;
  height: 140px;
  border-radius: 8px;
  background: #fff;
  padding: 8px;
  align-self: flex-start;
}

/* FOOTER */
footer {
  padding: 28px 24px;
  background: var(--orange-dark);
  color: var(--white);
  font-size: 14px;
  text-align: center;
}

footer nav {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

footer a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

footer a:hover,
footer a:focus {
  border-bottom-color: currentColor;
  outline: none;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-art {
    justify-self: start;
    max-width: 420px;
  }

  .features {
    grid-template-columns: 1fr;
  }
}