/* ========================================
   YOYAGE Industries Page Styles
   Purpose: industry explorer (tabs + panels)
   Loaded only on /industries/index.html
   ======================================== */

/* Page hero, breadcrumb, fact rows, spec tags, explore cards & CTA styles live in components.css (shared cross-page). */

/* ---------- 2. Industry Explorer ---------- */
/* Desktop: tabs in left column rows 1-4, active panel spans right column.
   Tabs are grouped in .industry-tabs (display: contents); mobile uses order
   to restore the stacked accordion sequence (tab, its panel, next tab, ...). */
.industry-explorer {
  display: grid;
  grid-template-columns: 380px 1fr;
  grid-template-rows: repeat(4, 1fr);
  gap: 16px 32px;
  align-items: stretch;
}

/* role="tablist" 包装层：不生成盒子，tab 仍作为 explorer 的直接网格/弹性子项 */
.industry-tabs {
  display: contents;
}

/* Tabs */
.industry-tab {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  min-height: 96px;
  padding: 20px 24px;
  text-align: left;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.industry-tab:nth-of-type(1) { grid-row: 1; }
.industry-tab:nth-of-type(2) { grid-row: 2; }
.industry-tab:nth-of-type(3) { grid-row: 3; }
.industry-tab:nth-of-type(4) { grid-row: 4; }

.industry-tab:hover {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-sm);
}

.industry-tab.is-active {
  border-color: var(--color-brand);
  background-color: rgba(0, 100, 124, 0.05);
  box-shadow: var(--shadow-sm);
}

.industry-tab-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background-color: var(--color-bg-alt);
  color: var(--color-brand);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.industry-tab.is-active .industry-tab-icon {
  background-color: var(--color-brand);
  color: var(--color-white);
}

.industry-tab-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.industry-tab-name {
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--color-title);
  transition: color var(--transition-fast);
}

.industry-tab.is-active .industry-tab-name {
  color: var(--color-brand);
}

.industry-tab-note {
  font-size: var(--fs-tag);
  color: var(--color-text);
  line-height: 1.4;
}

.industry-tab-arrow {
  flex-shrink: 0;
  color: var(--color-text);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.industry-tab.is-active .industry-tab-arrow {
  color: var(--color-brand);
  transform: translateX(4px);
}

/* Panels */
.industry-panel {
  grid-column: 2;
  grid-row: 1 / span 4;
  display: none;
}

.industry-panel.is-active {
  display: block;
  animation: industry-panel-fade 0.3s ease;
}

@keyframes industry-panel-fade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.industry-panel-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  background-color: var(--color-bg-alt);
  margin-bottom: 28px;
}

.industry-panel-media img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 8 / 5;
  object-fit: cover;
}

.industry-panel-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-title);
  margin-bottom: 12px;
}

.industry-panel-desc {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 24px;
}

.industry-panel-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-brand);
  text-decoration: none;
}

.industry-panel-link .link-arrow {
  transition: transform var(--transition-fast);
}

.industry-panel-link:hover .link-arrow {
  transform: translateX(4px);
}

/* ---------- 3. Responsive ---------- */
@media (max-width: 991px) {
  .industry-explorer {
    grid-template-columns: 320px 1fr;
    gap: 16px 24px;
  }

  .industry-tab {
    padding: 16px 20px;
  }
}

/* Mobile: stacked accordion order (tab, its panel, next tab, ...) */
@media (max-width: 767px) {
  .industry-explorer {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  /* DOM 中 4 个 tab 集中在 tablist 内，用 order 恢复“标签+面板”交错顺序 */
  .industry-tab:nth-of-type(1) { order: 1; }
  #industry-panel-water { order: 2; }
  .industry-tab:nth-of-type(2) { order: 3; }
  #industry-panel-oil-gas { order: 4; }
  .industry-tab:nth-of-type(3) { order: 5; }
  #industry-panel-power { order: 6; }
  .industry-tab:nth-of-type(4) { order: 7; }
  #industry-panel-chemical { order: 8; }

  .industry-tab {
    min-height: 0;
    padding: 14px 16px;
    gap: 12px;
  }

  .industry-tab-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
  }

  .industry-tab-icon svg {
    width: 20px;
    height: 20px;
  }

  .industry-tab-note {
    font-size: 12px;
  }

  .industry-tab-arrow {
    display: none;
  }

  .industry-panel {
    margin-bottom: 12px;
  }

  .industry-panel-media {
    margin-bottom: 20px;
  }

  .industry-panel-media img {
    aspect-ratio: 16 / 9;
  }

  .industry-panel-title {
    font-size: 20px;
  }
}