/* =============================
   cases
============================= */
.cases {
  padding: 100px 0;
  background: var(--color-bg-gray);
}

.cases__container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.cases__label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--gold);
  margin-bottom: 12px;
  display: block;
}

.cases__title {
  font-size: var(--fs-3xl);
  font-weight: 900;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cases__lead {
  font-size: var(--fs-base);
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 56px;
}

.cases__layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 48px;
  align-items: start;
}

/* ===== モック ===== */
.cases__mock {
  position: sticky;
  top: 100px;
}

.cases__mock-label {
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.cases__mock-frame {
  background: var(--navy-dark);
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: 36px;
  padding: 16px 10px 10px;
  box-shadow:
    0 0 0 1px var(--white-05),
    var(--shadow-deep),
    inset 0 1px 0 var(--white-10);
  position: relative;
  width: 280px;
  margin: 0 auto;
}

.cases__mock-frame::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 6px;
  background: var(--white-20);
  border-radius: 3px;
}

.cases__mock-screen {
  background: var(--color-black);
  border-radius: 26px;
  overflow: hidden;
  height: 500px;
  position: relative;
}

.cases__mock-screen video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cases__mock-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--black-70);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
}

.cases__mock-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-instagram);
  flex-shrink: 0;
}

.cases__mock-account {
  display: flex;
  flex-direction: column;
}

.cases__mock-name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-sub);
}

.cases__mock-sub {
  font-size: 0.625rem;
  color: var(--white-50);
}

.cases__mock-bar {
  height: 4px;
  background: var(--white-30);
  border-radius: 2px;
  width: 100px;
  margin: 8px auto 0;
}

/* ===== カードリスト ===== */
.cases__list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: 560px;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-40) var(--color-bg-section);
}

.cases__list::-webkit-scrollbar {
  width: 4px;
}

.cases__list::-webkit-scrollbar-track {
  background: var(--color-bg-section);
  border-radius: 2px;
}

.cases__list::-webkit-scrollbar-thumb {
  background: var(--gold-40);
  border-radius: 2px;
}

.cases__card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 24px 28px;
  transition: border-color 0.25s, transform 0.25s;
  box-shadow: var(--shadow-xs);
}

.cases__card:hover {
  border-color: var(--gold-40);
  transform: translateX(4px);
}

.cases__card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.cases__card-genre {
  font-size: 0.688rem;
  background: var(--gold-10);
  color: var(--gold);
  border: 1px solid var(--gold-25);
  border-radius: 4px;
  padding: 2px 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.cases__card-platform {
  font-size: 0.688rem;
  color: var(--color-text-lighter);
}

.cases__card-title {
  font-size: var(--fs-base);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.cases__card-body {
  font-size: var(--fs-sm);
  color: var(--color-text-medium);
  line-height: 1.75;
  margin-bottom: 12px;
}

.cases__card-kpis {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.cases__card-kpi {
  font-size: 0.688rem;
  background: var(--color-bg-section);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 3px 12px;
  color: var(--color-text-medium);
}

/* ===== もっと見る ===== */
.cases__more {
  text-align: center;
  margin-top: 48px;
}

.cases__more-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border: 2px solid var(--gold-40);
  border-radius: 4px;
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--gold);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.cases__more-btn:hover {
  background: var(--gold);
  color: var(--color-text);
}

@media (max-width: 960px) {
  .cases__layout {
    grid-template-columns: 1fr;
  }

  .cases__mock {
    position: static;
  }
}