/* Sponsorship portal (/sponsor/ and /sponsor-success/).
   Self-contained; uses only site-wide CSS variables from main.css so
   body.dark-mode works automatically. */

.sponsor-hero {
  text-align: center;
  padding: 3rem 1rem;
  margin-bottom: 2rem;
  background: linear-gradient(180deg, var(--bg-color) 0%, var(--amodei-ivory-dark) 100%);
  border-bottom: 1px solid var(--border-color);
  border-radius: 8px;
}

body.dark-mode .sponsor-hero {
  background: linear-gradient(180deg, var(--bg-color) 0%, var(--amodei-slate-medium) 100%);
}

.sponsor-hero h1 {
  margin-bottom: 0.5rem;
}

.sponsor-hero .tagline {
  color: var(--secondary-text);
  max-width: 34rem;
  margin: 0 auto;
}

/* GitHub-Sponsors-style tier card */
.sponsor-box {
  max-width: 480px;
  margin: 0 auto 3rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}

/* One-time / Monthly pill toggle */
.frequency-toggle {
  display: flex;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.freq-btn {
  flex: 1;
  padding: 0.6rem 0;
  border: none;
  background: transparent;
  color: var(--secondary-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.freq-btn.active {
  background: var(--amodei-orange);
  color: #fff;
}

/* Tier grid */
.tier-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.tier-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
  text-align: left;
  font: inherit;
  color: var(--text-color);
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s, box-shadow 0.15s;
}

button.tier-card:hover {
  border-color: var(--amodei-orange);
}

.tier-card.selected {
  border-color: var(--amodei-orange);
  box-shadow: 0 0 0 2px var(--amodei-orange) inset;
}

.tier-card.selected::after {
  content: "✓";
  position: absolute;
  top: 0.5rem;
  right: 0.6rem;
  color: var(--amodei-orange);
  font-weight: 700;
}

.tier-amount {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--heading-color);
}

.tier-blurb {
  font-size: 0.82rem;
  color: var(--secondary-text);
  line-height: 1.4;
}

/* Custom amount card spans both columns */
.tier-custom {
  grid-column: 1 / -1;
  cursor: default;
}

.tier-custom .tier-amount {
  font-size: 1rem;
}

.custom-amount-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.currency-prefix {
  color: var(--secondary-text);
  font-weight: 600;
}

#custom-amount {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-color);
  border-radius: 4px;
  padding: 8px;
  font: inherit;
}

#custom-amount:focus {
  outline: none;
  border-color: var(--amodei-orange);
}

/* Error + submit */
.sponsor-error {
  color: #c0392b;
  border: 1px solid currentColor;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.sponsor-submit-btn {
  display: block;
  width: 100%;
  background: var(--amodei-orange);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.8rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}

.sponsor-submit-btn:hover:not(:disabled) {
  opacity: 0.9;
}

.sponsor-submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.sponsor-fineprint {
  margin-top: 1rem;
  margin-bottom: 0;
  font-size: 0.8rem;
  color: var(--secondary-text);
  text-align: center;
}

/* About block */
.sponsor-about {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 3rem;
  text-align: center;
}

.sponsor-about h2 {
  margin-top: 0;
}

@media (max-width: 480px) {
  .tier-grid {
    grid-template-columns: 1fr;
  }
}