/* =====================================================
   detail.css · 项目详情页
   ===================================================== */

body { background: var(--color-fog); }

/* ---------- 顶部导航 ---------- */
#detailNav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: rgba(21, 19, 17, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-mist);
}

.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-ink);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.25s;
}
.nav-back:hover { color: var(--color-gold); }

.nav-index {
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--color-graphite);
}

/* ---------- 封面 ---------- */
#detailCoverWrap {
  max-width: 920px;
  margin: 110px auto 0;
  padding: 0 28px;
}

#detailCover {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
  display: block;
}

/* ---------- 内容 ---------- */
#detailContent {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 28px 90px;
}

.detail-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.detail-title {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 8px;
  letter-spacing: 1px;
}

.detail-en {
  font-size: 15px;
  letter-spacing: 5px;
  color: var(--color-graphite);
  text-transform: uppercase;
}

.detail-gold-line {
  width: 56px;
  height: 2px;
  background: var(--color-gold);
  margin: 32px 0 48px;
}

.detail-block { margin-bottom: 52px; }

.detail-h2 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin: 0 0 18px;
  letter-spacing: 1px;
}

.detail-body {
  font-size: var(--text-body);
  line-height: 1.9;
  color: var(--color-slate);
  margin: 0 0 16px;
}

.detail-tech-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.detail-footer {
  margin-top: 70px;
  text-align: center;
}

/* ---------- 手机端 ---------- */
@media (max-width: 640px) {
  #detailNav { padding: 14px 18px; }
  #detailCoverWrap { margin-top: 84px; padding: 0 18px; }
  #detailCover { border-radius: 14px; }
  #detailContent { padding: 40px 20px 70px; }
  .detail-title { font-size: 34px; }
}

/* =====================================================
   详情弹层（首页内打开，不离开页面）
   ===================================================== */
#detailOverlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  visibility: hidden;
  pointer-events: none;
}

#detailOverlay.open {
  visibility: visible;
  pointer-events: auto;
}

.overlay-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.45s ease;
}

#detailOverlay.open .overlay-backdrop { opacity: 1; }

.overlay-panel {
  position: absolute;
  top: 0; right: 0;
  height: 100%;
  width: min(600px, 94vw);
  background: var(--color-fog);
  display: flex;
  flex-direction: column;
  box-shadow: -24px 0 80px rgba(0, 0, 0, 0.28);
  transform: translateX(102%);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

#detailOverlay.open .overlay-panel { transform: translateX(0); }

.overlay-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 26px;
  border-bottom: 1px solid var(--color-mist);
  background: var(--color-fog);
  flex-shrink: 0;
}

.overlay-close {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  padding: 0;
  color: var(--color-ink);
  font-size: 14px;
  font-family: var(--font-text);
  cursor: pointer;
  transition: color 0.25s;
}
.overlay-close:hover { color: var(--color-gold); }

.overlay-scroll {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.overlay-body { padding-bottom: 70px; }

/* 弹层内的封面与内容间距调整（详情页的 margin 是为固定导航准备的） */
#detailOverlay #detailCoverWrap { margin: 30px auto 0; }
#detailOverlay #detailContent { padding-top: 44px; }

/* 弹层打开时锁定页面滚动 */
body.overlay-lock { overflow: hidden; }

/* 手机端 */
@media (max-width: 640px) {
  .overlay-panel { width: 100%; }
  .overlay-nav { padding: 14px 18px; }
  #detailOverlay #detailCoverWrap { margin: 20px auto 0; }
}

/* ---------- 能力体现标签（宝洁八大问维度） ---------- */
.detail-ability-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ability-chip {
  display: inline-block;
  padding: 8px 18px;
  border: 1.5px solid var(--color-gold);
  border-radius: 22px;
  background: rgba(201, 168, 76, 0.08);
  color: #d4b868;
  font-size: 14px;
  letter-spacing: 2px;
}