/* ==========================================================
   LEXIPL 活動 — 公開頁樣式
   ========================================================== */

:root {
  --brand: #0f2f56;
  --brand-dark: #0a2140;
  --gold: #b08d57;
  --ink: #16181d;
  --ink-2: #4a5160;
  --ink-3: #7b8494;
  --line: #e2e0da;
  --bg: #f8f7f4;
  --card: #ffffff;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 12px 32px -18px rgba(16, 24, 40, .3);
  --wrap: 1120px;
  --font: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", -apple-system,
          BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-serif: "Noto Serif TC", "Songti TC", "PMingLiU", Georgia, serif;
}

*, *::before, *::after { box-sizing: border-box; }

/* 作者樣式（例如 img{display:block}、.row2{display:grid}）會蓋過瀏覽器內建的
   [hidden]{display:none}，所以這裡明確補上，讓 JS 的 element.hidden 真的有效。 */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--gold); }

h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- 站台頁首 ---------- */
.site-header {
  background: var(--brand);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 40;
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; gap: 16px;
}
.brand { display: flex; align-items: baseline; gap: 10px; color: #fff; text-decoration: none; }
.brand__mark { font-weight: 800; letter-spacing: .14em; font-size: 18px; }
.brand__sub { font-size: 13px; color: rgba(255, 255, 255, .72); }
.site-nav { display: flex; gap: 20px; font-size: 14px; }
.site-nav a { color: rgba(255, 255, 255, .84); text-decoration: none; }
.site-nav a:hover { color: #fff; }

.preview-bar {
  background: #fff4d6; color: #6b4d09; font-size: 14px;
  padding: 8px 24px; text-align: center; border-bottom: 1px solid #eddfae;
}
.preview-bar a { margin-left: 10px; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: #fff; padding: 64px 0 72px;
}
.hero__eyebrow {
  margin: 0 0 12px; font-size: 12px; letter-spacing: .28em;
  color: var(--gold); font-weight: 600;
}
.hero__title { font-family: var(--font-serif); font-size: clamp(30px, 5vw, 46px); margin: 0 0 14px; }
.hero__lede { margin: 0; max-width: 60ch; color: rgba(255, 255, 255, .82); }

/* ---------- 區塊 ---------- */
.section { padding: 48px 0; }
.section__head {
  display: flex; align-items: baseline; gap: 12px;
  border-bottom: 2px solid var(--brand); padding-bottom: 10px; margin-bottom: 28px;
}
.section__head h2 { margin: 0; font-family: var(--font-serif); font-size: 24px; }
.section__count { color: var(--ink-3); font-size: 14px; }

/* ---------- 活動卡片 ---------- */
.egrid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
}
.egrid--past { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.ecard {
  display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; text-decoration: none; color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.ecard:hover {
  transform: translateY(-3px); box-shadow: var(--shadow); border-color: #cfcabc; color: inherit;
}
.ecard--past { opacity: .82; }
.ecard--past:hover { opacity: 1; }

.ecard__media { position: relative; aspect-ratio: 16 / 9; background: #eceae4; }
.ecard__media img { width: 100%; height: 100%; object-fit: cover; }
.ecard__placeholder {
  width: 100%; height: 100%; display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 40px; color: rgba(255, 255, 255, .9);
  background: linear-gradient(140deg, var(--brand), var(--brand-dark));
}
.ecard__placeholder[data-theme="slate"]   { background: linear-gradient(140deg, #3f4753, #23282f); }
.ecard__placeholder[data-theme="forest"]  { background: linear-gradient(140deg, #1f4438, #12281f); }
.ecard__placeholder[data-theme="burgundy"]{ background: linear-gradient(140deg, #5b2130, #34121b); }

.ecard__body { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.ecard__date { display: flex; align-items: baseline; gap: 6px; color: var(--gold); font-weight: 700; }
.ecard__day { font-size: 17px; }
.ecard__year { font-size: 12px; color: var(--ink-3); font-weight: 500; }
.ecard__title { font-size: 18px; margin: 0; }
.ecard__subtitle { margin: 0; font-size: 14px; color: var(--ink-2); }
.ecard__summary {
  margin: 4px 0 0; font-size: 14px; color: var(--ink-2); line-height: 1.7; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.ecard__meta {
  margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--ink-3);
}

.badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; letter-spacing: .02em;
  background: rgba(255, 255, 255, .16); color: #fff; border: 1px solid rgba(255, 255, 255, .28);
}
.ecard__media .badge { position: absolute; top: 12px; left: 12px; backdrop-filter: blur(6px); }
.badge--live { background: #1f7a4d; border-color: #1f7a4d; }
.badge--past { background: rgba(22, 24, 29, .68); border-color: transparent; }
.badge--featured { background: var(--gold); border-color: var(--gold); }

/* ---------- 活動內頁 ---------- */
.ehero { position: relative; background: var(--brand); color: #fff; overflow: hidden; }
.ehero[data-theme="slate"]    { background: #2b313a; }
.ehero[data-theme="forest"]   { background: #17372c; }
.ehero[data-theme="burgundy"] { background: #4a1a26; }
.ehero__bg { position: absolute; inset: 0; opacity: .22; }
.ehero__bg img { width: 100%; height: 100%; object-fit: cover; }
.ehero__inner { position: relative; padding: 40px 24px 52px; }

.crumbs { font-size: 13px; color: rgba(255, 255, 255, .6); margin-bottom: 20px; }
.crumbs a { color: rgba(255, 255, 255, .85); text-decoration: none; }
.crumbs span { margin: 0 6px; }

.ehero__badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.ehero__title {
  font-family: var(--font-serif); font-size: clamp(26px, 4.4vw, 40px);
  margin: 0 0 12px; max-width: 22ch;
}
.ehero__subtitle { margin: 0 0 16px; font-size: 18px; color: rgba(255, 255, 255, .82); max-width: 50ch; }
.ehero__host { margin: 0; font-size: 14px; color: rgba(255, 255, 255, .68); }

.elayout {
  display: grid; grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px; padding-top: 48px; padding-bottom: 80px; align-items: start;
}
@media (max-width: 900px) {
  .elayout { grid-template-columns: 1fr; gap: 32px; }
}

.elede {
  font-size: 18px; line-height: 1.85; color: var(--ink-2);
  border-left: 3px solid var(--gold); padding-left: 18px; margin: 0 0 32px;
}

.prose { font-size: 16.5px; }
.prose h2 { font-family: var(--font-serif); font-size: 22px; margin-top: 2em; }
.prose h3 { font-size: 18px; margin-top: 1.8em; }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.prose li { margin-bottom: .4em; }
.prose img { border-radius: var(--radius); margin: 1.4em 0; }
.prose blockquote {
  margin: 1.5em 0; padding: 4px 0 4px 18px;
  border-left: 3px solid var(--line); color: var(--ink-2);
}
.prose table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.prose th { background: #f2f0eb; font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }

.esection { margin-top: 56px; }
.esection h2 {
  font-family: var(--font-serif); font-size: 22px;
  border-bottom: 2px solid var(--brand); padding-bottom: 8px; margin-bottom: 20px;
}
.esection__hint { margin: -8px 0 18px; font-size: 14px; color: var(--ink-3); }
.esection--survey {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px 28px;
}

/* 議程 */
.agenda { list-style: none; padding: 0; margin: 0; }
.agenda__item {
  display: grid; grid-template-columns: 130px 1fr; gap: 20px;
  padding: 16px 0; border-bottom: 1px solid var(--line);
}
.agenda__item:last-child { border-bottom: 0; }
.agenda__time { font-weight: 700; color: var(--brand); font-variant-numeric: tabular-nums; }
.agenda__topic { font-weight: 600; }
.agenda__speaker { font-size: 14px; color: var(--ink-2); margin-top: 2px; }
.agenda__note { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
@media (max-width: 620px) {
  .agenda__item { grid-template-columns: 1fr; gap: 4px; }
}

/* 講者 */
.speakers { display: grid; gap: 24px; }
.speaker { display: grid; grid-template-columns: 84px 1fr; gap: 20px; align-items: start; }
.speaker__photo { width: 84px; height: 84px; border-radius: 50%; object-fit: cover; }
.speaker__photo--blank {
  display: grid; place-items: center; background: var(--brand); color: #fff;
  font-family: var(--font-serif); font-size: 30px;
}
.speaker__name { font-weight: 700; font-size: 17px; }
.speaker__role { font-size: 14px; color: var(--gold); margin-top: 1px; }
.speaker__bio { margin: 8px 0 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.75; }

/* 表單嵌入 */
.formwrap {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden;
}
.formwrap iframe { display: block; width: 100%; border: 0; }
.formwrap__fallback { font-size: 14px; color: var(--ink-3); margin-top: 12px; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; gap: 16px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "＋"; color: var(--gold); flex: none; }
.faq__item[open] summary::after { content: "−"; }
.faq__answer { padding: 0 0 18px; color: var(--ink-2); font-size: 15px; }

/* 側欄 */
.eside { position: sticky; top: 88px; }
@media (max-width: 900px) { .eside { position: static; } }

.ebox {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow);
}
.einfo { margin: 0 0 20px; }
.einfo__row { padding: 12px 0; border-bottom: 1px solid var(--line); }
.einfo__row:first-child { padding-top: 0; }
.einfo dt { font-size: 12px; letter-spacing: .1em; color: var(--ink-3); margin-bottom: 4px; }
.einfo dd { margin: 0; font-size: 15px; line-height: 1.65; }

.econtact {
  margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line);
  font-size: 14px; color: var(--ink-2);
}
.econtact__label { font-size: 12px; letter-spacing: .1em; color: var(--ink-3); margin-bottom: 6px; }

.notice-inline {
  background: #f2f0eb; border-radius: var(--radius); padding: 12px 14px;
  font-size: 14px; color: var(--ink-2); text-align: center;
}

/* 底部固定 CTA */
.stickycta {
  position: sticky; bottom: 0; z-index: 30;
  background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
}
.stickycta__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 24px;
}
.stickycta__text { display: flex; flex-direction: column; min-width: 0; }
.stickycta__text strong {
  font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.stickycta__text span { font-size: 13px; color: var(--ink-3); }
.stickycta .btn { flex: none; white-space: nowrap; }
@media (min-width: 901px) { .stickycta { display: none; } }

/* ---------- 按鈕 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: var(--radius);
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  text-decoration: none; transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { border-color: var(--ink-3); color: var(--ink); }
.btn--primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); color: #fff; }
.btn--outline { background: transparent; border-color: var(--brand); color: var(--brand); }
.btn--ghost { background: transparent; }
.btn--block { display: flex; width: 100%; margin-bottom: 10px; }
.btn--block:last-child { margin-bottom: 0; }

/* ---------- 空狀態 ---------- */
.empty {
  background: #fff; border: 1px dashed var(--line); border-radius: var(--radius-lg);
  padding: 48px 24px; text-align: center; color: var(--ink-2);
}
.empty__hint { color: var(--ink-3); font-size: 14px; }

/* ---------- 頁尾 ---------- */
.site-footer { background: var(--brand); color: rgba(255, 255, 255, .72); margin-top: 40px; }
.site-footer__inner {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px;
  padding: 36px 24px; font-size: 14px;
}
.site-footer__brand { color: #fff; font-weight: 600; }
.site-footer__note { margin: 6px 0 0; }
.site-footer__meta { display: flex; gap: 20px; align-items: center; }
.site-footer a { color: rgba(255, 255, 255, .78); text-decoration: none; }
.site-footer a:hover { color: #fff; }

/* ==========================================================
   簡版版型（登入、短網址預覽、錯誤頁）
   ========================================================== */
body.bare { background: var(--bg); display: grid; place-items: center; min-height: 100vh; padding: 24px; }
.bare__main { width: 100%; max-width: 440px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 40px 32px; box-shadow: var(--shadow);
}
.card--center { text-align: center; }
.card__eyebrow { font-size: 12px; letter-spacing: .24em; color: var(--gold); font-weight: 700; }
.card__code { font-size: 52px; font-weight: 800; color: var(--line); line-height: 1; }
.card__title { font-family: var(--font-serif); font-size: 24px; margin: 10px 0 12px; }
.card__body { color: var(--ink-2); margin: 0 0 24px; }
.card__note { font-size: 14px; color: var(--ink-2); margin: 0 0 20px; }
.card__fineprint { font-size: 12.5px; color: var(--ink-3); margin: 20px 0 0; line-height: 1.7; }
.card--login .card__title { margin-bottom: 6px; }

.linkpeek {
  background: #f7f6f3; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; margin: 20px 0 24px; word-break: break-all;
}
.linkpeek__from { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; color: var(--ink-3); }
.linkpeek__arrow { color: var(--gold); margin: 6px 0; }
.linkpeek__host { font-weight: 700; font-size: 17px; }
.linkpeek__url {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; color: var(--ink-3); margin-top: 6px;
}

/* 識別提供者登入按鈕（Google / Microsoft 共用外觀） */
.idbtn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 12px 20px; margin-top: 10px;
  border: 1px solid #dadce0; border-radius: var(--radius);
  background: #fff; color: #3c4043; font-weight: 600; text-decoration: none;
  transition: background .15s, box-shadow .15s;
}
.idbtn:hover { background: #f8f9fa; box-shadow: 0 1px 3px rgba(60, 64, 67, .2); color: #3c4043; }
.idbtn svg { flex: none; }

.alert {
  text-align: left; padding: 12px 14px; border-radius: var(--radius);
  font-size: 14px; margin: 0 0 20px; line-height: 1.6;
}
.alert--error { background: #fdecec; color: #8c1d18; border: 1px solid #f5c3c0; }
.alert--warn { background: #fff8e6; color: #6b4d09; border: 1px solid #f0dda8; }
.alert code { background: rgba(0, 0, 0, .06); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }

@media print {
  .site-header, .site-footer, .stickycta, .preview-bar { display: none; }
  body { background: #fff; }
}