/* =========================================================
   investor-news.css
   用途：重大訊息（Investor_news.aspx）
   作用範圍：.investor-news-page
========================================================= */

.investor-news-page {
  --inv-primary: #0c596f;
  --inv-accent: #19a7b8;
  --inv-text: #1a3040;
  --inv-muted: #7a94a3;
  --inv-border: #dce4ea;
  --inv-bg-light: #f5f8fa;
}

.investor-news-content {
  width: 100%;
}

.investor-news-main {
  padding: 28px 32px 36px;
  background: #ffffff;
  border: 1px solid var(--inv-border);
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(7, 41, 56, 0.05);
}

/* 年度 Slick 導覽 */
.investor-news-main .slider-nav {
  width: min(100%, 42rem);
  margin: 0 auto 1.5rem;
}

.investor-news-main .slider-nav .nav-items {
  text-align: center;
  cursor: pointer;
  padding: 0 6px;
}

.investor-news-main .slider-nav h3 {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  margin: 0 auto;
  border-radius: 50%;
  background: #fff;
  color: var(--inv-primary);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.1;
  box-shadow: inset 0 0 0 3px rgba(12, 89, 111, 0.15);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.investor-news-main .slider-nav h3 small {
  display: block;
  margin-top: 2px;
  font-size: 0.75rem;
  font-weight: 600;
}

.investor-news-main .slider-nav .slick-current h3 {
  background: linear-gradient(135deg, var(--inv-primary), var(--inv-accent));
  color: #fff;
  box-shadow: 0 8px 18px rgba(12, 89, 111, 0.25);
}

.investor-news-main .slick-prev:before,
.investor-news-main .slick-next:before {
  color: var(--inv-primary);
}

.investor-news-year-title {
  margin: 0 0 20px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--inv-primary);
}

.investor-news-year-title span {
  font-size: 2rem;
  color: var(--inv-accent);
  vertical-align: baseline;
}

/* 訊息手風琴 */
.investor-news-accordion {
  border: 1px solid var(--inv-border);
  border-radius: 10px;
  overflow: hidden;
}

.investor-news-accordion .accordion-item {
  border: none;
  border-bottom: 1px solid var(--inv-border);
}

.investor-news-accordion .accordion-item:last-child {
  border-bottom: none;
}

.investor-news-accordion .accordion-button {
  flex-wrap: wrap;
  gap: 4px 12px;
  padding: 16px 20px;
  color: var(--inv-text);
  font-size: 15px;
  font-weight: 700;
  background: #ffffff;
  box-shadow: none;
}

.investor-news-accordion .accordion-button:not(.collapsed) {
  color: #ffffff;
  background: linear-gradient(135deg, var(--inv-primary), var(--inv-accent));
}

.investor-news-accordion .accordion-button:focus {
  box-shadow: inset 0 0 0 2px rgba(25, 167, 184, 0.35);
}

.investor-news-accordion .accordion-button::after {
  filter: none;
  flex-shrink: 0;
}

.investor-news-accordion .accordion-button:not(.collapsed)::after {
  filter: brightness(0) invert(1);
}

.investor-news-item-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  flex: 1;
  min-width: 0;
  text-align: left;
}

.investor-news-subject {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
}

.investor-news-date {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.85;
}

.investor-news-accordion .accordion-body {
  padding: 20px 22px;
  color: var(--inv-text);
  line-height: 1.75;
  font-size: 15px;
  background: var(--inv-bg-light);
}

.investor-news-accordion .accordion-body ul {
  margin: 0;
  padding-left: 1.1rem;
}

.investor-news-accordion .accordion-body li {
  margin-bottom: 0.5rem;
}

.investor-news-accordion .accordion-body li:last-child {
  margin-bottom: 0;
}

@media (max-width: 767.98px) {
  .investor-news-main {
    padding: 20px 16px 24px;
  }

  .investor-news-main .slider-nav h3 {
    width: 58px;
    height: 58px;
    font-size: 1.1rem;
  }

  .investor-news-accordion .accordion-button {
    padding: 14px 16px;
  }

  .investor-news-accordion .accordion-body {
    padding: 16px;
  }
}