/* ==========================================================================
   NTPU AI4X | News Hub
   Add-on stylesheet for the JSON-driven 消息與活動 pages. Loaded after
   assets/styles.css; every selector is namespaced under `news-` so the shared
   design system (body, header, nav, footer, .btn …) is left untouched.
   ========================================================================== */

/* ---- Toolbar: search + filters ------------------------------------------ */
.news-hub__toolbar {
  display: grid;
  gap: 0.9rem;
  padding: 1.15rem 1.3rem;
  margin-bottom: 1.4rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.news-search { display: grid; gap: 0.35rem; }
.news-search__label,
.news-filter__label {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}
.news-search__input,
.news-filter select {
  width: 100%;
  min-height: 44px;
  padding: 0.45rem 0.75rem;
  color: var(--ink);
  font: inherit;
  font-size: 0.98rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.news-search__input::placeholder { color: rgba(74, 93, 110, 0.75); }
.news-search__input:focus-visible,
.news-filter select:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* Category chips: the primary filter, above the secondary select controls.
   Real buttons, so keyboard focus and activation are the browser's own. */
.news-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.news-chip {
  padding: 0.42rem 0.95rem;
  min-height: 40px;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.92rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
}
.news-chip:hover { color: var(--blue); border-color: rgba(13, 74, 158, 0.4); }
.news-chip:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.news-chip[aria-pressed="true"] {
  color: #fff;
  font-weight: 700;
  background: var(--blue);
  border-color: var(--blue);
}

.news-filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}
.news-filters--secondary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.news-filter { display: grid; gap: 0.35rem; min-width: 0; }

.news-hub__status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}
.news-hub__count {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}
.news-hub__clear {
  padding: 0.35rem 0.9rem;
  color: var(--blue);
  font: inherit;
  font-size: 0.92rem;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}
.news-hub__clear:hover { background: rgba(13, 74, 158, 0.07); }
.news-hub__clear[hidden] { display: none; }

/* ---- Result cards ------------------------------------------------------- */
.news-hub__results { display: grid; gap: 0.9rem; }

.news-card {
  display: grid;
  gap: 0.55rem;
  padding: 1.2rem 1.35rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.news-card__meta,
.news-detail__meta,
.news-card__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.news-card__title { font-size: 1.14rem; margin: 0; overflow-wrap: anywhere; }
.news-card__title a:hover { color: var(--blue); }
.news-card__summary { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

.news-card__facts,
.news-detail__facts {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.2rem 0.9rem;
  margin: 0.15rem 0 0;
  font-size: 0.95rem;
}
.news-card__facts dt,
.news-detail__facts dt {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.05em;
}
.news-card__facts dd,
.news-detail__facts dd { margin: 0; overflow-wrap: anywhere; }

.news-card__more { margin: 0.2rem 0 0; }
.news-card__link { color: var(--blue); font-size: 0.95rem; font-weight: 700; }
/* Deliberately quiet: the full notice lives on the detail page. */
.news-card__note { margin: 0; color: var(--ink-soft); font-size: 0.85rem; }

/* ---- Badges & status ---------------------------------------------------- */
.news-badge,
.news-status {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  width: fit-content;
  padding: 0.24rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
  border-radius: 999px;
  border: 1px solid transparent;
}
.news-badge--external { color: var(--clay); background: rgba(184, 92, 58, 0.1); border-color: rgba(184, 92, 58, 0.35); }
.news-badge--internal { color: var(--blue); background: rgba(13, 74, 158, 0.08); border-color: rgba(13, 74, 158, 0.28); }

/* Status meaning is carried by its text, never by colour alone. */
.news-status { background: rgba(12, 26, 42, 0.05); border-color: var(--line); color: var(--ink-soft); }
.news-status--open { color: #0e7a45; background: rgba(24, 160, 94, 0.12); border-color: rgba(24, 160, 94, 0.34); }
.news-status--closing { color: var(--clay); background: rgba(184, 92, 58, 0.12); border-color: rgba(184, 92, 58, 0.4); }
.news-status--closed { color: var(--ink-soft); }
.news-status--upcoming { color: var(--violet); background: rgba(109, 74, 217, 0.1); border-color: rgba(109, 74, 217, 0.32); }
.news-status--ended { color: var(--ink-soft); }
.news-status--info { color: var(--ink-soft); }

/* ---- Empty / loading / error states ------------------------------------- */
.news-empty,
.news-message {
  padding: 1.6rem 1.35rem;
  color: var(--ink-soft);
  text-align: center;
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.news-empty__title { margin: 0 0 0.3rem; color: var(--ink); font-weight: 700; }
.news-empty__hint { margin: 0; font-size: 0.95rem; }
.news-message--error { color: var(--clay); border-color: rgba(184, 92, 58, 0.4); }

/* ---- Detail page -------------------------------------------------------- */
.news-detail {
  display: grid;
  gap: 0.9rem;
  max-width: 80ch;
  padding: 1.5rem 1.6rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.news-detail__title { font-size: 1.9rem; margin: 0; overflow-wrap: anywhere; }
.news-detail__summary { margin: 0; color: var(--ink-soft); font-size: 1.03rem; }
.news-detail__subhead {
  margin: 0 0 0.4rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}
.news-detail__content { display: grid; gap: 0.6rem; padding-top: 0.3rem; border-top: 1px solid var(--line); }
.news-detail__content p { margin: 0; }
.news-detail__source { padding-top: 0.6rem; border-top: 1px solid var(--line); }
.news-detail__source p { margin: 0; overflow-wrap: anywhere; }
.news-detail__back { margin: 0; }
.news-detail__back a { color: var(--blue); font-weight: 700; }

.news-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0; padding: 0; list-style: none; }
.news-tag {
  padding: 0.2rem 0.65rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  background: rgba(12, 26, 42, 0.045);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.news-extlink { color: var(--blue); font-weight: 700; }
.news-extlink__icon { margin-left: 0.2rem; font-size: 0.9em; }

.news-disclaimer {
  padding: 1rem 1.15rem;
  background: rgba(184, 92, 58, 0.06);
  border: 1px solid rgba(184, 92, 58, 0.28);
  border-radius: var(--radius);
}
.news-disclaimer__title {
  margin: 0 0 0.35rem;
  color: var(--clay);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.news-disclaimer__body { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

/* ---- Responsive --------------------------------------------------------- */
@media (max-width: 900px) {
  .news-filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .news-hub__toolbar { padding: 1rem; }
  .news-filters { grid-template-columns: 1fr; }
  /* Chips scroll sideways inside their own strip rather than pushing the page
     wide; tabbing to a chip scrolls it into view, so keyboard use is unaffected. */
  .news-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    padding-bottom: 0.3rem;
    margin-inline: -0.15rem;
    padding-inline: 0.15rem;
  }
  .news-chip { flex: 0 0 auto; }
  .news-card__facts,
  .news-detail__facts { grid-template-columns: 1fr; gap: 0.1rem; }
  .news-card__facts dd,
  .news-detail__facts dd { margin-bottom: 0.35rem; }
  .news-detail { padding: 1.2rem 1.1rem; }
  .news-detail__title { font-size: 1.5rem; }
}