/* Sponsors page — scoped to avoid leaking onto host/past-host pages. */
.wdc-sponsors-page {
  --paper: #fafafa;
  --line: #e0e0e0;
  --ink: #1a1a1a;
  --ink-2: #5a5a5a;
  --ink-3: #8a8a8a;
  --teal: var(--md-primary-fg-color, #009688);
  --teal-dark: #00766c;
  --blue: var(--md-accent-fg-color, #448aff);
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

.wdc-sponsors-page .lead {
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 300;
  line-height: 1.5;
  color: var(--ink);
  margin: 4px 0 12px;
  max-width: 60ch;
}

/* Support cards */
.wdc-sponsors-page .support {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 20px 0;
  margin: 16px 0 20px;
  border-bottom: 1px solid var(--line);
}
.wdc-sponsors-page .support-card {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--paper);
  border: 1px solid var(--line);
  transition: transform 0.2s, box-shadow 0.2s;
}
.wdc-sponsors-page .support-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.05);
}
.wdc-sponsors-page .support-card h3 {
  font-weight: 400;
  font-size: 22px;
  margin: 10px 0 8px;
}
.wdc-sponsors-page .support-card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 15px;
}

/* Year header */
.wdc-sponsors-page .year-group {
  margin-bottom: 72px;
  scroll-margin-top: 80px;
}
.wdc-sponsors-page .year-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}
.wdc-sponsors-page .year-num {
  font-weight: 300;
  font-size: clamp(24px, 3vw, 32px);
  margin: 0;
  color: var(--teal);
  border-bottom: none;
  padding-bottom: 0;
}
.wdc-sponsors-page .year-meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.wdc-sponsors-page .year-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* Sponsor cards */
.wdc-sponsors-page .sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, 160px);
  gap: 14px;
  justify-content: start;
}
.wdc-sponsors-page .sponsor-card {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  background: var(--paper);
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: pointer;
  outline: none;
  transition: transform 0.25s, box-shadow 0.25s;
}
.wdc-sponsors-page .sponsor-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.18);
}
.wdc-sponsors-page .sponsor-card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.wdc-sponsors-page .card-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: 18px;
  transition: opacity 0.22s;
}
.wdc-sponsors-page .card-logo {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  min-height: 0;
}
.wdc-sponsors-page .card-logo img {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
}
.wdc-sponsors-page .card-logo-placeholder {
  width: 60%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: #e0f2f1;
  color: var(--teal-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 300;
}
.wdc-sponsors-page .card-footer {
  display: flex;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.wdc-sponsors-page .card-tier {
  color: var(--ink-2);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.wdc-sponsors-page .card-back {
  background: var(--teal-dark);
  color: #fff;
  opacity: 0;
  pointer-events: none;
}

/* Become a sponsor CTA */
.wdc-sponsors-page .become-sponsor {
  margin: 20px 0;
  padding: 40px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  color: #fff;
  position: relative;
  overflow: hidden;
}
.wdc-sponsors-page .become-sponsor::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(68, 138, 255, 0.3), transparent 50%);
  pointer-events: none;
}
.wdc-sponsors-page .become-inner {
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 32px;
  align-items: center;
  position: relative;
}
.wdc-sponsors-page .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
}
.wdc-sponsors-page .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  border: 1px solid #fff;
  box-shadow: 0 0 0 3px rgba(68, 138, 255, 0.3);
}
.wdc-sponsors-page .become-sponsor h3 {
  font-weight: 300;
  font-size: 36px;
  margin: 14px 0 10px;
  line-height: 1.15;
  color: #fff;
  border-bottom: none;
}
.wdc-sponsors-page .become-sponsor p {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  max-width: 48ch;
}
.wdc-sponsors-page .become-ctas {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.wdc-sponsors-page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 48px;
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: 17px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s;
}
.wdc-sponsors-page .btn.primary { background: var(--blue); color: #fff; }
.wdc-sponsors-page .btn.primary:hover { background: #2979ff; border-color: #fff; }
.wdc-sponsors-page .btn.ghost { background: rgba(255, 255, 255, 0.25); color: #fff; }
.wdc-sponsors-page .btn.ghost:hover { background: rgba(255, 255, 255, 0.35); border-color: #fff; }

@media (max-width: 900px) {
  .wdc-sponsors-page .support { grid-template-columns: 1fr; }
  .wdc-sponsors-page .sponsor-grid {
    grid-template-columns: repeat(auto-fill, 130px);
    gap: 10px;
    justify-content: center;
  }
  .wdc-sponsors-page .become-inner { grid-template-columns: 1fr; }
  .wdc-sponsors-page .become-ctas { flex-direction: row; }
  .wdc-sponsors-page .become-sponsor { padding: 28px; }
  .wdc-sponsors-page .become-sponsor h3 { font-size: 28px; }
  /* Reduce padding and hide footer so logo fills the smaller cards */
  .wdc-sponsors-page .card-face { padding: 10px; }
  .wdc-sponsors-page .card-logo { padding: 6px; }
  .wdc-sponsors-page .card-footer { display: none; }
}

/* Sponsor info modal (replaces flip card on small screens) */
#wdc-sponsor-modal {
  border: none;
  border-radius: var(--radius);
  padding: 0;
  width: min(92vw, 400px);
  background: var(--teal-dark);
  color: #fff;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}
#wdc-sponsor-modal::backdrop {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(3px);
}
.wdc-sponsor-modal-inner {
  padding: 28px;
  position: relative;
  overflow-y: auto;
  max-height: 80vh;
}
.wdc-sponsor-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: #fff;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.wdc-sponsor-modal-close:hover { background: rgba(255, 255, 255, 0.28); }
.wdc-sponsor-modal-tier {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #b2dfdb;
  margin-bottom: 6px;
}
.wdc-sponsor-modal-name {
  font-weight: 400;
  font-size: 22px;
  margin: 0 0 14px;
  line-height: 1.2;
  color: #fff;
  border-bottom: none;
  padding-bottom: 0;
}
.wdc-sponsor-modal-desc {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 16px;
}
.wdc-sponsor-modal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.wdc-sponsor-modal-links a {
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.15s;
}
.wdc-sponsor-modal-links a:hover { background: var(--blue); }