:root{
  --bg: #0b1020;
  --bg2:#070b16;
  --card: rgba(255,255,255,.08);
  --card2: rgba(255,255,255,.10);
  --border: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);

  --accent1:#6ee7ff; /* cyan */
  --accent2:#a78bfa; /* purple */
  --accent3:#22c55e; /* green */
  --danger:#ff5a7a;

  --radius: 16px;
  --radius2: 22px;
  --shadow: 0 18px 45px rgba(0,0,0,.35);
  --max: 980px;
  --gap: 14px;
}

/* 基本 Reset */
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  color: var(--text);
  font-family: system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans TC",sans-serif;
  background:
    radial-gradient(1200px 700px at 20% 0%, rgba(110,231,255,.18), transparent 55%),
    radial-gradient(900px 500px at 85% 15%, rgba(167,139,250,.18), transparent 55%),
    radial-gradient(900px 600px at 50% 120%, rgba(34,197,94,.10), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

/* 容器 */
.container{
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 16px 40px;
}

/* 標題 + 科學感小裝飾線 */
h1,h2{ letter-spacing: .3px; }
h1{
  font-size: 34px;
  margin: 0;
}
h1::after{
  content:"";
  display:block;
  width: 86px;
  height: 3px;
  margin-top: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  opacity:.95;
}
h2{
  font-size: 20px;
  margin: 0;
}

/* Topbar */
.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 12px;
  flex-wrap:wrap;
}

/* 玻璃卡片 */
.card{
  background: linear-gradient(180deg, var(--card2), var(--card));
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 16px;
  margin: 14px 0;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.card:hover{
  border-color: rgba(110,231,255,.25);
}

/* 文字 */
.muted{ color: var(--muted); }
.err{ color: var(--danger); }

/* 連結 */
a{
  color: rgba(110,231,255,.95);
  text-decoration:none;
}
a:hover{ text-decoration: underline; }

/* 按鈕：科學感漸層 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(255,255,255,.95);
  background: linear-gradient(135deg, rgba(110,231,255,.22), rgba(167,139,250,.22));
  box-shadow: 0 10px 26px rgba(0,0,0,.25);
  cursor:pointer;
  transition: transform .08s ease, border-color .2s ease, background .2s ease;
}
.btn:hover{
  border-color: rgba(110,231,255,.35);
  transform: translateY(-1px);
}
.btn:active{ transform: translateY(0px); }

.btn.secondary{
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.90);
}
.btn.disabled{
  opacity:.55;
  pointer-events:none;
}

/* 表單 */
label{
  display:block;
  margin: 10px 0 6px;
  color: rgba(255,255,255,.82);
}
input, textarea, select{
  width:100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(10,16,32,.55);
  color: rgba(255,255,255,.92);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
input::placeholder, textarea::placeholder{ color: rgba(255,255,255,.45); }
input:focus, textarea:focus, select:focus{
  border-color: rgba(110,231,255,.45);
  box-shadow: 0 0 0 4px rgba(110,231,255,.12);
}

/* ✅ 重要：不要讓 radio/checkbox 被 width:100% 影響 */
input[type="checkbox"], input[type="radio"]{
  width:auto;
  padding:0;
  box-shadow:none;
}

/* grid */
.grid-2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}

/* 表格：玻璃感 + 手機可橫滑 */
.table-wrap{
  overflow-x:auto;
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.05));
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
table{
  width:100%;
  border-collapse:collapse;
  min-width: 820px;
}
th,td{
  border-bottom: 1px solid rgba(255,255,255,.10);
  padding: 12px 12px;
  text-align:left;
  vertical-align:top;
  white-space:nowrap;
}
th{
  color: rgba(255,255,255,.86);
  font-weight: 650;
}
td{ color: rgba(255,255,255,.88); }
td.wrap{ white-space:normal; }

.hr{
  border-top:1px solid rgba(255,255,255,.12);
  margin: 18px 0;
}

/* RWD */
@media (max-width: 640px){
  .container{ padding: 18px 12px 28px; }
  .grid-2{ grid-template-columns: 1fr; }
  h1{ font-size: 24px; }
  h1::after{ width: 64px; }
}

/* ===== 表單選項（radio/checkbox）排版修正 ===== */
.option-list{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:8px;
  align-items:flex-start;
}
.option-item{
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap:10px;
  width:100%;
}
.option-item span{
  writing-mode: horizontal-tb;
  white-space: normal;
  word-break: keep-all;
  overflow-wrap: break-word;
  text-align:left;
}

/* ===== 活動頁美化 ===== */
.page-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom: 8px;
}
.page-title{ margin:0; }
.page-sub{ margin:6px 0 0; color: var(--muted); }

.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.88);
  font-size: 13px;
}
.badge.ok{ border-color: rgba(34,197,94,.25); background: rgba(34,197,94,.10); }
.badge.warn{ border-color: rgba(255,204,112,.25); background: rgba(255,204,112,.10); }
.badge.danger{ border-color: rgba(255,90,122,.30); background: rgba(255,90,122,.10); }

.meta{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top: 10px;
}
.meta-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.meta-item{
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
}
.meta-item svg{
  width:18px;
  height:18px;
  opacity:.9;
  flex: 0 0 auto;
}
.meta-item span{
  color: rgba(255,255,255,.90);
}
.meta-item .muted{ color: rgba(255,255,255,.70); }

.event-card-title{
  font-size:18px;
  margin: 0 0 6px;
  line-height:1.35;
}
.event-desc{
  color: rgba(255,255,255,.75);
  margin: 0;
  line-height:1.6;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top: 14px;
}

.icon{
  width:18px;
  height:18px;
  display:inline-block;
  vertical-align:-3px;
  opacity:.9;
}
/* ===== Markdown content styling ===== */
.md-content{
  line-height: 1.75;
  color: rgba(255,255,255,.88);
}
.md-content h1, .md-content h2, .md-content h3{
  margin: 14px 0 8px;
  color: rgba(255,255,255,.95);
}
.md-content h1{ font-size: 22px; }
.md-content h2{ font-size: 18px; }
.md-content h3{ font-size: 16px; }

.md-content p{
  margin: 8px 0;
}

.md-content ul, .md-content ol{
  margin: 8px 0 8px 22px;
  padding: 0;
}
.md-content li{
  margin: 6px 0;
}

.md-content a{
  text-decoration: underline;
}