:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #050816;
  color: #eef2ff;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: radial-gradient(circle at top, rgba(70, 94, 255, 0.18), transparent 34%),
    radial-gradient(circle at 20% 0%, rgba(90, 255, 199, 0.12), transparent 30%),
    #050816;
}

.page-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 24px;
}

.hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 0 12px;
}

a.body,
p,
ul,
li,
label {
  line-height: 1.7;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: #7c82ff;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.subhead {
  margin: 16px 0 0;
  max-width: 760px;
  color: #c3c7ff;
}

.content-wrapper {
  width: min(1200px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  margin-top: 18px;
}

.card {
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.tab-button {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #dbe1ff;
  border-radius: 16px;
  padding: 12px 18px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.tab-button.active {
  border-color: rgba(124, 130, 255, 0.35);
  background: rgba(124, 130, 255, 0.12);
  color: #fff;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.donation-box {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 16px;
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.donation-box code {
  flex: 1 1 auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95rem;
  color: #e4e9ff;
  word-break: break-all;
}

.donation-feedback {
  margin-top: 14px;
  color: #a8d4ff;
  font-size: 0.95rem;
  min-height: 1.4em;
}

.form-card h2,
.info-card h2 {
  margin-top: 0;
  font-size: 1.5rem;
}

.card-copy {
  color: #abb0d6;
  margin-bottom: 20px;
}

.tx-form {
  display: grid;
  gap: 16px;
}

label {
  font-weight: 600;
  color: #dbe1ff;
}

input[type="text"] {
  width: 100%;
  min-height: 54px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #f8fbff;
  font-size: 1rem;
}

input[type="text"]:focus {
  outline: none;
  border-color: #7c82ff;
  box-shadow: 0 0 0 4px rgba(124, 130, 255, 0.12);
}

button {
  min-height: 52px;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  background: linear-gradient(135deg, #6673ff 0%, #7c82ff 100%);
  color: #fff;
  transition: transform 0.2s ease, filter 0.2s ease;
}

button:hover,
button:focus-visible {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.result {
  margin-top: 18px;
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(45, 55, 95, 0.92);
  border: 1px solid rgba(124, 130, 255, 0.16);
  color: #d7e4ff;
}

.result.hidden {
  display: none;
}

.result.success {
  background: rgba(20, 109, 74, 0.18);
  border-color: rgba(20, 109, 74, 0.3);
  color: #d2f8d4;
}

.result.error {
  background: rgba(147, 29, 64, 0.17);
  border-color: rgba(217, 84, 102, 0.36);
  color: #ffcddf;
}

.features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.features li {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.footer {
  margin-top: auto;
  text-align: center;
  padding: 22px 0 8px;
  color: #7b82a1;
  font-size: 0.95rem;
}

@media (max-width: 840px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 580px) {
  .page-shell {
    padding: 18px;
  }

  .card {
    padding: 22px;
  }
}