/* ════════════════════════════════════════════════════════════
   元件層：跨頁面共用的 UI（按鈕、標籤、導覽列、頁尾、燈箱…）
   ════════════════════════════════════════════════════════════ */

/* ── 按鈕 ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: .95rem;
  letter-spacing: .06em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: transform .18s var(--ease), background-color .2s, border-color .2s,
              color .2s, box-shadow .2s;
}

.btn:active { transform: translateY(1px); }

.btn--lg { padding: 14px 30px; font-size: 1rem; }
.btn--sm { padding: 8px 16px; font-size: .88rem; }

.btn--primary {
  background: var(--vermilion);
  color: #fff;
  box-shadow: 0 8px 20px -12px rgba(168, 52, 42, .9);
}

.btn--primary:hover {
  background: var(--vermilion-hover);
  color: #fff;
  box-shadow: 0 12px 26px -12px rgba(168, 52, 42, .95);
}

.btn--ghost {
  background: rgba(255, 255, 255, .6);
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn--ghost:hover {
  background: #fff;
  border-color: var(--ink-3);
  color: var(--ink);
  box-shadow: var(--shadow-xs);
}

.btn--quiet {
  background: transparent;
  border-color: transparent;
  color: var(--ink-3);
}

.btn--quiet:hover { color: var(--vermilion); }

.btn--danger { color: var(--vermilion); }

.btn--danger:hover { color: #fff; background: var(--vermilion); border-color: var(--vermilion); }

.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn--discord {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn--discord:hover {
  border-color: var(--discord);
  color: var(--discord-hover);
  box-shadow: 0 6px 16px -10px rgba(88, 101, 242, .9);
}

.btn__icon { width: 18px; height: 18px; flex: 0 0 auto; }

/* ── 標籤與 chips ───────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 15px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .65);
  font-size: .82rem;
  letter-spacing: .1em;
  color: var(--ink-2);
}

.chip--filter {
  font-family: inherit;
  cursor: pointer;
  transition: background-color .2s, border-color .2s, color .2s;
}

.chip--filter:hover { border-color: var(--ink-3); color: var(--ink); }

.chip--filter.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.tag {
  display: inline-block;
  padding: 3px 11px;
  border-radius: var(--radius-pill);
  font-size: .72rem;
  letter-spacing: .14em;
  line-height: 1.7;
}

.tag--pin    { background: var(--vermilion); color: #fff; }
.tag--notice { background: var(--vermilion-soft); color: var(--vermilion); }
.tag--event  { background: var(--jade-soft); color: var(--jade); }
.tag--guild  { background: var(--gold-soft); color: var(--gold); }
.tag--other  { background: var(--paper-warm); color: var(--ink-3); }
.tag--draft  { background: var(--paper-warm); color: var(--ink-3); border: 1px dashed var(--line-strong); }
.tag--media  { background: var(--jade-soft); color: var(--jade); }

/* ── 一次性訊息（flash）────────────────────────────────── */
.flash {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: var(--space-5);
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: .9rem;
  line-height: 1.7;
  box-shadow: var(--shadow-xs);
}

.flash--ok { border-color: rgba(63, 107, 98, .4); background: var(--jade-soft); color: var(--jade); }
.flash--error { border-color: rgba(168, 52, 42, .35); background: var(--vermilion-soft); color: var(--vermilion); }

.flash__mark { flex: 0 0 auto; font-weight: 700; }

/* ── 分頁（前台序號與後台清單共用）───────────────────────── */
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2) var(--space-3);
  margin-top: var(--space-8);
  font-size: .88rem;
}

.pagination__link {
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--ink-2);
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.pagination__link:hover { border-color: var(--vermilion); color: var(--vermilion); }

.pagination__link.is-disabled { color: var(--ink-3); opacity: .5; }

.pagination__pages { display: inline-flex; align-items: center; gap: 2px; }

.pagination__page {
  min-width: 36px;
  padding: 8px 8px;
  border-radius: var(--radius-pill);
  color: var(--ink-2);
  text-align: center;
  text-decoration: none;
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.pagination__page:hover { background: var(--paper-warm); color: var(--vermilion); }

.pagination__page.is-current {
  background: var(--vermilion);
  color: var(--paper);
  font-weight: 600;
}

.pagination__gap { padding: 0 2px; color: var(--ink-3); }

/* ── 站頭 ──────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(251, 248, 243, .84);
  backdrop-filter: blur(12px) saturate(1.15);
  border-bottom: 1px solid transparent;
  transition: background-color .3s var(--ease), border-color .3s var(--ease),
              box-shadow .3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(251, 248, 243, .95);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 26px -22px rgba(34, 31, 27, .5);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  text-decoration: none;
  color: var(--ink);
}

.brand:hover { color: var(--ink); }

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__seal {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  background: var(--vermilion);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1;
  box-shadow: 0 3px 8px -4px rgba(168, 52, 42, .8);
}

.brand__seal--sm { width: 30px; height: 30px; font-size: .95rem; }

.brand__name {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: .16em;
  line-height: 1.25;
}

.brand__meta {
  display: block;
  font-size: .64rem;
  letter-spacing: .2em;
  color: var(--ink-3);
}

.site-header__panel {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-nav { display: flex; align-items: center; gap: 2px; }

.site-nav__link {
  position: relative;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  font-size: .94rem;
  letter-spacing: .1em;
  color: var(--ink-2);
  text-decoration: none;
  transition: color .2s, background-color .2s;
}

.site-nav__link:hover { color: var(--ink); background: rgba(34, 31, 27, .045); }

.site-nav__link.is-active { color: var(--vermilion); }

/* 管理員才會看到的入口 */
.site-nav__link--admin { color: var(--vermilion); }

.site-nav__link--admin::before {
  content: "◆";
  margin-right: 6px;
  font-size: .6rem;
  vertical-align: 2px;
}

.site-nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 1px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--vermilion);
  transform: translateX(-50%);
}

.site-header__account {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.account { display: flex; align-items: center; gap: 9px; }

.account__logout { display: flex; align-items: center; }

.account__avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--paper-warm);
  object-fit: cover;
}

.account__avatar--fallback {
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: .82rem;
  color: var(--ink-2);
}

.account__name {
  font-size: .88rem;
  letter-spacing: .06em;
  color: var(--ink-2);
  max-width: 9em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, .7);
  cursor: pointer;
}

.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }

.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .25s var(--ease), opacity .2s;
}

.nav-toggle[aria-expanded="true"] i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── 頁尾 ──────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-warm);
  padding-block: clamp(40px, 6vw, 64px) 36px;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-6) var(--space-10);
  align-items: start;
}

.site-footer__brand { display: flex; align-items: flex-start; gap: 14px; }

.site-footer__name {
  font-family: var(--font-serif);
  letter-spacing: .16em;
}

.site-footer__name span { font-size: .8rem; color: var(--ink-3); letter-spacing: .1em; }

.site-footer__tagline {
  margin-top: 4px;
  font-size: .84rem;
  letter-spacing: .14em;
  color: var(--ink-3);
}

.site-footer__links { display: flex; flex-wrap: wrap; gap: var(--space-5); }

.site-footer__links a {
  font-size: .9rem;
  letter-spacing: .08em;
  color: var(--ink-2);
  text-decoration: none;
}

.site-footer__links a:hover { color: var(--vermilion); }

.site-footer__disclaimer {
  grid-column: 1 / -1;
  margin-top: var(--space-2);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line);
  font-size: .78rem;
  line-height: 1.9;
  color: var(--ink-3);
}

.site-footer__copy {
  grid-column: 1 / -1;
  margin-top: var(--space-2);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--ink-4);
}

/* ── 燈箱（活動剪影放大檢視）────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: var(--space-6);
}

.lightbox[hidden] { display: none; }

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(34, 31, 27, .84);
  backdrop-filter: blur(6px);
  animation: lsg-fade-in .25s var(--ease);
}

.lightbox__dialog {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  max-width: min(1100px, 92vw);
  animation: lsg-pop-in .3s var(--ease-out);
}

.lightbox__figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 12px; }

.lightbox__img {
  max-width: 100%;
  max-height: 76vh;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.lightbox__caption {
  font-size: .9rem;
  letter-spacing: .1em;
  color: rgba(251, 248, 243, .88);
}

.lightbox__close,
.lightbox__nav {
  position: fixed;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid rgba(251, 248, 243, .28);
  border-radius: 50%;
  background: rgba(34, 31, 27, .55);
  color: var(--paper);
  cursor: pointer;
  transition: background-color .2s, border-color .2s;
}

.lightbox__close:hover,
.lightbox__nav:hover { background: rgba(34, 31, 27, .85); border-color: rgba(251, 248, 243, .5); }

.lightbox__close svg,
.lightbox__nav svg { width: 20px; height: 20px; }

.lightbox__close { top: 18px; right: 18px; }
.lightbox__nav--prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lightbox__nav--next { right: 18px; top: 50%; transform: translateY(-50%); }

@keyframes lsg-fade-in { from { opacity: 0; } to { opacity: 1; } }

@keyframes lsg-pop-in {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to   { opacity: 1; transform: none; }
}

/* ── 內頁共用（施工中頁、錯誤頁）───────────────────────── */
.page-head { max-width: 40rem; }

.page-head__title {
  margin: var(--space-4) 0 0;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: .12em;
}

.page-head__lead { margin-top: var(--space-4); color: var(--ink-2); line-height: 2; }

.status-pill {
  display: inline-block;
  margin-top: var(--space-5);
  padding: 5px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .7);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--ink-3);
}

.panel {
  margin-top: var(--space-8);
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.panel__title { margin: 0; font-size: 1.15rem; letter-spacing: .12em; }

.panel__foot {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px dashed var(--line);
  font-size: .86rem;
  color: var(--ink-3);
}

.ticks { list-style: none; margin-top: var(--space-5); display: grid; gap: var(--space-3); }

.ticks__item {
  position: relative;
  padding-left: 24px;
  color: var(--ink-2);
  line-height: 1.9;
}

.ticks__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 8px;
  height: 8px;
  border: 1.5px solid var(--vermilion);
  border-radius: 2px;
  transform: rotate(45deg);
}

.error-box {
  max-width: 34rem;
  margin-inline: auto;
  padding: clamp(28px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.error-box__code {
  font-family: var(--font-serif);
  font-size: 3rem;
  line-height: 1;
  color: var(--vermilion);
  opacity: .85;
}

.error-box__title { margin: var(--space-4) 0 0; font-size: 1.4rem; letter-spacing: .12em; }

.error-box__message { margin-top: var(--space-4); color: var(--ink-2); line-height: 2; }

.error-box__detail {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--paper-warm);
  font-size: .8rem;
  text-align: left;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink-3);
}

/* ── 響應式：手機版導覽抽屜 ─────────────────────────────── */
/* 斷點訂在 960px：登入的管理員在導覽列上有 5 個連結＋帳號區，
   實測在 900px 時內容已佔 832px，再窄就會擠壓，所以提早收成抽屜。 */
@media (max-width: 960px) {
  .nav-toggle { display: grid; }

  .site-header__panel {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    padding: 14px var(--gutter) var(--space-5);
    background: rgba(251, 248, 243, .98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }

  .site-header__panel.is-open { display: flex; }

  .site-nav { flex-direction: column; align-items: stretch; gap: 2px; }

  .site-nav__link { padding: 12px 12px; border-radius: var(--radius-sm); }

  .site-nav__link.is-active { background: var(--vermilion-soft); }

  .site-nav__link.is-active::after { display: none; }

  .site-header__account {
    justify-content: space-between;
    margin-top: var(--space-2);
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }

  .account__name { max-width: 12em; }

  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 520px) {
  :root { --gutter: 18px; }

  .brand__meta { display: none; }

  .lightbox__close { top: 12px; right: 12px; }
  .lightbox__nav { width: 40px; height: 40px; }
  .lightbox__nav--prev { left: 8px; }
  .lightbox__nav--next { right: 8px; }
}