/* donation.php 専用スタイル
   共通スタイル: css/common.css を先に読み込むこと */

.donation-page {
  background: var(--offwhite);
}

.donation-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 76px 24px;
}

.support-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 40px;
  align-items: start;
}

.support-intro__copy h1 {
  margin: 0 0 24px;
  color: var(--dark);
  font-size: 4.3rem;
  line-height: 1.05;
  font-weight: 800;
}

.support-intro__logo {
  width: min(420px, 100%);
  height: auto;
  margin: 0 0 28px;
}

.support-intro__copy p,
.realized-card p,
.publication-copy p {
  margin: 0;
  color: var(--text);
}

.support-courses {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.support-course {
  display: flex;
  flex-direction: column;
  min-height: 340px;
  padding: 28px;
  background: var(--white);
  border: 1px solid rgba(10, 46, 31, 0.12);
  border-radius: var(--radius);
}

.support-course--featured {
  border-top: 5px solid var(--gold);
}

.support-course span {
  display: block;
  margin-bottom: 16px;
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 2.4px;
}

.support-course h2,
.realized-card h3,
.donor-list h3 {
  margin: 0 0 12px;
  color: var(--dark);
}

.support-course h2 {
  font-size: 1.6rem;
}

.support-course__price {
  margin: 0 0 18px;
  color: var(--dark);
  font-size: 1.35rem;
  font-weight: 800;
}

.support-course p:not(.support-course__price) {
  margin: 0 0 24px;
  color: var(--text);
}

.support-course a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: auto;
  padding: 12px 18px;
  background: var(--dark);
  color: var(--white);
  border: 2px solid var(--dark);
  font-weight: 700;
  transition: background 0.3s, color 0.3s, transform 0.3s;
}

.support-course a:hover {
  background: transparent;
  color: var(--dark);
  transform: translateY(-2px);
}

.donation-section__head {
  margin-bottom: 32px;
}

.donation-section__head h2,
.publication-copy h2 {
  margin: 0;
  color: var(--dark);
  font-size: 3rem;
  line-height: 1.12;
}

.realized-section {
  max-width: none;
  background: var(--white);
}

.realized-section .donation-section__head,
.realized-grid {
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
}

.realized-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.realized-card {
  background: var(--offwhite);
  border: 1px solid rgba(10, 46, 31, 0.1);
  border-radius: var(--radius);
  overflow: hidden;
}

.realized-card__image {
  height: 360px;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--white);
  scrollbar-gutter: stable;
  overscroll-behavior: contain;
}

.realized-card__image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.realized-card > div:not(.realized-card__image) {
  padding: 24px;
}

.realized-card h3 {
  font-size: 1.25rem;
}

.donor-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
}

.donor-lists {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.donor-mock {
  display: grid;
  gap: 20px;
}

.donor-mock[hidden] {
  display: none;
}

.donor-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.donor-summary div,
.donor-period {
  background: var(--white);
  border: 1px solid rgba(10, 46, 31, 0.12);
  border-radius: var(--radius);
}

.donor-summary div {
  padding: 24px;
}

.donor-summary span,
.donor-period > div:first-child span {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 2.2px;
}

.donor-summary strong {
  display: block;
  color: var(--dark);
  font-size: 2rem;
  line-height: 1.1;
}

.donor-summary p,
.donor-period p {
  margin: 8px 0 0;
  color: var(--gray);
  font-size: 0.88rem;
}

.donor-timeline {
  display: grid;
  gap: 18px;
}

.donor-period {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 24px;
  padding: 26px;
}

.donor-period--current {
  border-top: 5px solid var(--gold);
}

.donor-period h3,
.donor-period h4 {
  margin: 0;
  color: var(--dark);
}

.donor-period h3 {
  font-size: 1.45rem;
}

.donor-period h4 {
  margin-bottom: 12px;
  font-size: 0.98rem;
}

.donor-period__lists {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.donor-period__lists article {
  min-width: 0;
}

.donor-list {
  min-height: 180px;
  padding: 26px;
  background: var(--white);
  border: 1px solid rgba(10, 46, 31, 0.12);
  border-radius: var(--radius);
}

.donor-list__empty {
  margin: 0;
  color: var(--gray);
}

.donor-names {
  list-style: none;
  padding: 0;
  margin: 0;
}

.donor-names li {
  padding: 12px 0;
  border-top: 1px solid rgba(10, 46, 31, 0.1);
}

.donor-names li:first-child {
  border-top: 0;
  padding-top: 0;
}

.donor-names strong,
.donor-names a {
  display: block;
  color: var(--dark);
  font-weight: 700;
}

.donor-names a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.donor-names span {
  display: block;
  margin-top: 3px;
  color: var(--gray);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .support-intro,
  .support-courses,
  .realized-grid,
  .donor-section,
  .donor-lists,
  .donor-summary,
  .donor-period,
  .donor-period__lists {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .donation-section {
    padding: 56px 20px;
  }

  .support-intro__copy h1 {
    font-size: 2.6rem;
  }

  .donation-section__head h2,
  .publication-copy h2 {
    font-size: 2.1rem;
  }

  .support-course {
    min-height: auto;
    padding: 24px;
  }

  .realized-card img {
    height: auto;
  }

  .realized-card__image {
    height: 320px;
  }
}