/* ============================================================
   DIFO — simulation.css  シミュレーション研修ページ専用スタイル
   共通スタイルは common.css を参照
   ============================================================ */

/* ============================================================
   PRODUCTS SECTION
   ============================================================ */
.sim-products {
  background: var(--neutral-light);
}

.sim-products .section-title {
  text-align: center;
  margin-bottom: 12px;
}

.sim-products__desc {
  text-align: center;
  font-size: 0.92rem;
  color: var(--neutral-medium);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.75;
}

/* ============================================================
   GRID
   ============================================================ */
.sim-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   SIMULATION CARD
   ============================================================ */
.sim-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(47, 122, 182, 0.1);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}

.sim-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* ── Image area ── */
.sim-card__image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  flex-shrink: 0;
}

.sim-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s var(--ease);
}

.sim-card:hover .sim-card__image img {
  transform: scale(1.05);
}

.sim-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 34, 54, 0.88) 0%,
    rgba(10, 34, 54, 0.25) 55%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px 16px;
  gap: 5px;
}

.sim-card__tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-color);
  background: rgba(35, 214, 201, 0.18);
  border: 1px solid rgba(35, 214, 201, 0.35);
  padding: 2px 9px;
  border-radius: var(--radius-pill);
}

.sim-card__overlay h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
  line-height: 1.2;
}

/* ── Body area ── */
.sim-card__body {
  padding: 14px 16px 16px;
  height: 340px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
}

.sim-card__body::-webkit-scrollbar {
  width: 4px;
}
.sim-card__body::-webkit-scrollbar-track {
  background: transparent;
}
.sim-card__body::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 4px;
}
.sim-card__body::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

.sim-card__count {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--neutral-medium);
  letter-spacing: 0.04em;
}

/* ── Item button list ── */
.sim-card__items {
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-rows: 50px;
  gap: 8px;
}

/* ============================================================
   SIM ITEM BUTTONS
   ============================================================ */
.sim-item-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 12px;
  height: 100%;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.45;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
  background: var(--primary-bg);
  color: var(--primary-color);
  border: 1px solid var(--primary-light);
}

a.sim-item-btn:hover {
  background: var(--primary-color);
  color: var(--white);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(47, 122, 182, 0.28);
}

a.sim-item-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

/* Disabled state */
.sim-item-btn--disabled {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: rgba(240, 245, 248, 0.7);
  color: var(--neutral-medium);
  border-color: rgba(90, 112, 128, 0.14);
  cursor: not-allowed;
  opacity: 0.65;
}

.sim-item-btn--disabled small {
  display: block;
  font-size: 0.65rem;
  color: rgba(90, 112, 128, 0.7);
  font-weight: 400;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .sim-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sim-products__desc {
    margin-bottom: 36px;
  }

  .sim-grid {
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .sim-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 400px) {
  .sim-card__items {
    grid-template-columns: repeat(2, 1fr);
  }

  .sim-item-btn {
    font-size: 0.78rem;
  }
}