:root {
  --bg: #f9f9f7;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --accent: #0f766e;
  --accent-muted: #d1f5f0;
  --border: #e5e7eb;
  --radius: 18px;
  --shadow: 0 20px 45px -25px rgba(15, 118, 110, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--accent);
}

.site-header {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.6rem clamp(1.4rem, 5vw, 3rem) 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mark {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: 0.75rem;
  font-family: 'Playfair Display', serif;
  letter-spacing: 0.05em;
}

.name {
  margin: 0;
  font-weight: 600;
}

.tagline {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
}

nav a {
  position: relative;
  padding-bottom: 0.2rem;
}

nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

nav a:hover::after,
nav a:focus::after {
  transform: scaleX(1);
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 clamp(1.4rem, 5vw, 3rem) 4rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 4rem);
  padding: 2rem 0 3.5rem;
  align-items: center;
}

.hero-copy h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.3rem, 4vw, 3.2rem);
  line-height: 1.2;
  margin: 0 0 1rem;
}

.hero-copy p {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.impact-glance {
  list-style: none;
  margin: 0 0 1.8rem;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.impact-glance span {
  font-weight: 600;
  color: var(--accent);
}

.primary-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--accent);
}

.primary-link::after {
  content: '→';
  font-size: 1rem;
  transition: transform 0.3s ease;
}

.primary-link:hover::after,
.primary-link:focus::after {
  transform: translateX(4px);
}

.hero-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: clamp(1.5rem, 4vw, 2.4rem);
  box-shadow: var(--shadow);
}

.hero-quote {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  margin: 0 0 1.3rem;
  color: var(--text);
}

.quote-source {
  margin: 0;
  color: var(--muted);
}

.donation-block {
  background: var(--surface);
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid var(--border);
  padding: clamp(2.2rem, 5vw, 3rem);
  display: grid;
  gap: 2rem;
  box-shadow: var(--shadow);
}

.form-intro h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.8rem, 3vw, 2.2rem);
}

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

.donation-form {
  display: grid;
  gap: 2rem;
}

fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

legend {
  font-weight: 600;
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.amount-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.amount-btn {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  padding: 0.7rem 1.4rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

.amount-btn:hover,
.amount-btn:focus {
  border-color: var(--accent);
  color: var(--accent);
}

.amount-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 10px 25px -15px rgba(15, 118, 110, 0.6);
}

.custom-amount-label {
  margin-top: 1.4rem;
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.custom-amount-input {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.7rem;
  background: #f5f5f3;
  border-radius: 999px;
  padding: 0.4rem 1.1rem;
  border: 1px solid transparent;
}

.custom-amount-input:focus-within {
  border-color: var(--accent);
  background: #fff;
}

.currency {
  font-weight: 600;
  color: var(--muted);
}

input[type='number'] {
  border: none;
  background: transparent;
  font-size: 1rem;
  width: 100%;
  padding: 0.5rem 0;
  outline: none;
}

.helper-text {
  margin: 0.8rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.details-group label {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.details-group input,
.details-group textarea {
  padding: 0.8rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.details-group input:focus,
.details-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
  outline: none;
}

.input-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 1.2rem;
}

.payment-options {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.payment-options label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #f5f5f3;
  border-radius: 16px;
  padding: 0.8rem 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.payment-options input:checked + span,
.payment-options label:hover span {
  color: var(--accent);
  font-weight: 600;
}

.payment-options input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 6px;
}

.payment-options input:checked {
  accent-color: var(--accent);
}

.payment-options input:checked ~ span,
.payment-options label:has(input:checked) {
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 10px 20px -15px rgba(15, 118, 110, 0.4);
}

.payment-hint {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  display: grid;
  gap: 0.6rem;
}

.hint {
  margin: 0;
}

.submit-btn {
  align-self: flex-start;
  border: none;
  border-radius: 999px;
  padding: 0.9rem 2.6rem;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-btn:hover,
.submit-btn:focus {
  transform: translateY(-1px);
  box-shadow: 0 18px 35px -25px rgba(15, 118, 110, 0.8);
}

.form-alert {
  margin: 0;
  font-weight: 500;
  font-size: 0.95rem;
}

.form-alert.success {
  color: #047857;
}

.form-alert.error {
  color: #dc2626;
}

.security-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.impact-section {
  padding: 4rem 0 3rem;
}

.impact-section h2,
.faq-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 2rem;
  font-family: 'Playfair Display', serif;
}

.impact-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.impact-grid article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  display: grid;
  gap: 0.75rem;
}

.impact-grid h3 {
  margin: 0;
  font-size: 1.15rem;
}

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

.faq-section {
  padding: 3rem 0 4rem;
}

.faq-section details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 1rem;
  padding: 1rem 1.2rem;
}

.faq-section summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-section p {
  margin: 0.8rem 0 0;
  color: var(--muted);
}

.site-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem clamp(1.4rem, 5vw, 3rem) 3rem;
  font-size: 0.9rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.site-footer p {
  margin: 0.4rem 0;
}

@media (max-width: 900px) {
  nav {
    display: none;
  }

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

  .hero-card {
    order: -1;
  }
}

@media (max-width: 600px) {
  .donation-block {
    padding: 1.8rem;
  }

  .submit-btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}