/* ============================================================
   Case Detail Modal — 実績詳細モーダル
   Design tokens: variables.css
   z-index: header(100) より上に配置 → 200
   SP: フルスクリーン風表示
   ============================================================ */

/* ---- Overlay ---- */
.case-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 27, 46, 0.72);        /* navy-deep ベース */
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease-out), visibility 0.35s;
}

.case-modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

/* body スクロールロック（JS 側で付与） */
body.modal-open {
  overflow: hidden;
}

/* ---- Dialog Container ---- */
.case-modal {
  position: relative;
  width: 92vw;
  max-width: 720px;
  max-height: 88vh;
  background: var(--c-bg, #fff);
  border-radius: 16px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  overflow: hidden;
  transform: translateY(32px) scale(0.97);
  transition: transform 0.4s var(--ease-out);
}

.case-modal-overlay.is-open .case-modal {
  transform: translateY(0) scale(1);
}

/* ---- Scrollable Inner ---- */
.case-modal__scroll {
  overflow-y: auto;
  max-height: 88vh;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

/* Custom scrollbar */
.case-modal__scroll::-webkit-scrollbar {
  width: 6px;
}
.case-modal__scroll::-webkit-scrollbar-track {
  background: transparent;
}
.case-modal__scroll::-webkit-scrollbar-thumb {
  background: var(--c-border, #e5e5e5);
  border-radius: 3px;
}

/* ---- Close Button ---- */
.case-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(4px);
  color: var(--c-text, #1a1a1a);
  font-size: 1.15rem;
  cursor: pointer;
  transition: background 0.25s, transform 0.25s;
}

.case-modal__close:hover,
.case-modal__close:focus-visible {
  background: var(--c-bg, #fff);
  transform: scale(1.08);
}

.case-modal__close:focus-visible {
  outline: 2px solid var(--c-gold, #C9A84C);
  outline-offset: 2px;
}

/* ---- Hero Image ---- */
.case-modal__hero {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--c-bg-section, #f7f8fa);
}

.case-modal__hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Fallback icon when image fails */
.case-modal__hero-fallback {
  position: absolute;
  inset: 0;
  display: none;               /* shown by JS on img error */
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-navy-deep, #0d1b2e), var(--c-navy, #1e3a5f));
  color: var(--c-gold, #C9A84C);
  font-size: 3rem;
}

.case-modal__hero-fallback.is-active {
  display: flex;
}

/* Category Badge */
.case-modal__tag {
  position: absolute;
  bottom: 12px;
  left: 16px;
  display: inline-block;
  padding: 4px 14px;
  background: var(--c-gold, #C9A84C);
  color: #fff;
  font-family: var(--f-label, 'Inter', sans-serif);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 4px;
  line-height: 1.6;
}

/* ---- Body ---- */
.case-modal__body {
  padding: 28px 32px 36px;
}

/* Title */
.case-modal__title {
  margin: 0 0 12px;
  font-family: var(--f-heading-ja, 'Noto Serif JP', serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text, #1a1a1a);
}

/* Tech Stack */
.case-modal__tech {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--f-label, 'Inter', sans-serif);
  font-size: 0.82rem;
  color: var(--c-gold, #C9A84C);
  font-weight: 600;
}

.case-modal__tech i {
  font-size: 0.9rem;
}

/* Description */
.case-modal__desc {
  margin: 0 0 24px;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-text-light, #555);
}

/* ---- Meta Grid (Scale / Duration) ---- */
.case-modal__meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
  padding: 20px;
  background: var(--c-bg-section, #f7f8fa);
  border-radius: 10px;
}

.case-modal__meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.case-modal__meta-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--f-label, 'Inter', sans-serif);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-text-muted, #999);
  text-transform: uppercase;
}

.case-modal__meta-label i {
  color: var(--c-gold, #C9A84C);
  font-size: 0.8rem;
}

.case-modal__meta-value {
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--c-text, #1a1a1a);
}

/* ---- Section (Roles / Outcomes / Detail) ---- */
.case-modal__section {
  margin-bottom: 24px;
}

.case-modal__section:last-child {
  margin-bottom: 0;
}

.case-modal__section-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-border-light, #f0f0f0);
  font-family: var(--f-heading-ja, 'Noto Serif JP', serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-text, #1a1a1a);
}

.case-modal__section-heading i {
  color: var(--c-gold, #C9A84C);
  font-size: 0.88rem;
}

/* List (Roles / Outcomes) */
.case-modal__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.case-modal__list li {
  position: relative;
  padding: 6px 0 6px 20px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--c-text-light, #555);
}

.case-modal__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-border, #e5e5e5);
}

/* Outcomes list — gold accent bullets */
.case-modal__list--outcomes li::before {
  background: var(--c-gold, #C9A84C);
}

/* Detail paragraph */
.case-modal__detail {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--c-text-light, #555);
}

/* ============================================================
   Responsive
   ============================================================ */

/* Tablet — 768px */
@media (max-width: 768px) {
  .case-modal {
    width: 96vw;
    max-width: none;
    max-height: 92vh;
    border-radius: 12px;
  }

  .case-modal__scroll {
    max-height: 92vh;
  }

  .case-modal__body {
    padding: 24px 24px 32px;
  }

  .case-modal__title {
    font-size: 1.2rem;
  }

  .case-modal__meta-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }
}

/* SP — 480px  フルスクリーン風 */
@media (max-width: 480px) {
  .case-modal-overlay {
    align-items: flex-end;          /* 下から出現する感じ */
  }

  .case-modal {
    width: 100vw;
    max-height: 94vh;
    border-radius: 20px 20px 0 0;
    transform: translateY(100%) scale(1);
  }

  .case-modal-overlay.is-open .case-modal {
    transform: translateY(0) scale(1);
  }

  .case-modal__scroll {
    max-height: 94vh;
  }

  .case-modal__close {
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .case-modal__hero {
    aspect-ratio: 4 / 3;           /* SP では少し正方形寄りに */
  }

  .case-modal__body {
    padding: 20px 20px 28px;
  }

  .case-modal__title {
    font-size: 1.1rem;
  }

  .case-modal__desc {
    font-size: 0.85rem;
  }

  .case-modal__list li {
    font-size: 0.84rem;
  }

  .case-modal__detail {
    font-size: 0.84rem;
  }
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  .case-modal-overlay {
    transition: none;
  }
  .case-modal {
    transition: none;
  }
}

/* ---- Focus Trap Sentinel (hidden, for JS) ---- */
.case-modal__focus-sentinel {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}