/* ───────── 設計變數（取自 defense-ai.tw 的視覺：天藍底、深藍橫幅、藍→青漸層、琥珀 CTA） ───────── */
:root {
  --navy: #0b2a5b;
  --hero-1: #0a2f78;
  --hero-2: #0b45a8;
  --blue: #0a5fd0;
  --cyan: #10b0e4;
  --grad: linear-gradient(135deg, #0a5fd0 0%, #10b0e4 100%);
  --sky-top: #e2f4ff;
  --sky-bot: #cbe8fb;
  --card: rgba(255, 255, 255, .82);
  --card-solid: #f4faff;
  --text: #1b3358;
  --muted: #55708f;
  --line: #b9d6ef;
  --line-soft: #d6e8f7;
  --field: #ffffff;
  --amber-grad: linear-gradient(135deg, #ffd770 0%, #f6a623 100%);
  --amber-ink: #5a3300;
  --amber: #f6a623;
  --ok: #138a5b;
  --ok-bg: #e4f7ee;
  --danger: #c43d3d;
  --danger-bg: #fdeded;
  --warn-bg: #fff6dc;
  --warn-line: #e5b93c;
  --shadow: 0 10px 30px rgba(18, 84, 170, .12);
  --radius: 22px;
  --radius-sm: 10px;
  --font: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Heiti TC", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  color: var(--text); font: 16px/1.7 var(--font);
  background:
    radial-gradient(900px 420px at 85% 0%, rgba(255, 255, 255, .75), transparent 70%),
    radial-gradient(700px 380px at 5% 55%, rgba(255, 255, 255, .55), transparent 70%),
    linear-gradient(180deg, var(--sky-top) 0%, var(--sky-bot) 70%, #dff1fd 100%);
}
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: #0846a0; }
h1, h2, h3 { line-height: 1.35; margin: 0 0 .5em; color: var(--navy); letter-spacing: .02em; }
h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); font-weight: 800; }
h2 { font-size: 1.25rem; font-weight: 800; }
h3 { font-size: 1.05rem; font-weight: 700; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
.wrap { width: min(100% - 2rem, 820px); margin-inline: auto; }
main.wrap { flex: 1; padding: 2rem 0 3.5rem; width: min(100% - 2rem, 820px); }
.muted { color: var(--muted); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ───────── 前台：網格橫幅 + 懸浮膠囊導覽（對應官網首屏） ───────── */
.hero-wrap {
  color: #fff; padding: 0 0 2.6rem;
  background:
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, .28) 1px, transparent 1.6px) 0 0 / 56px 56px,
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(135deg, var(--hero-1) 0%, var(--hero-2) 62%, #0a5fd0 100%);
}
.pill {
  display: flex; align-items: center; gap: .75rem 1.25rem; flex-wrap: wrap; padding: .6rem 1.2rem;
  background: rgba(228, 243, 255, .92); border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 0 0 28px 28px; box-shadow: var(--shadow);
}
.pill .brand { font-style: italic; font-weight: 800; color: var(--navy); text-decoration: none; margin-right: auto; letter-spacing: .02em; }
.pill nav { display: flex; gap: .35rem; flex-wrap: wrap; align-items: center; }
.pill nav a {
  color: #3d5b82; text-decoration: none; font-weight: 600; font-size: .95rem;
  padding: .4rem .95rem; border-radius: 12px;
}
.pill nav a:hover { background: rgba(10, 95, 208, .1); color: var(--blue); }
.pill nav a[aria-current="page"] { background: var(--grad); color: #fff; box-shadow: 0 4px 12px rgba(10, 95, 208, .3); }
.pill nav a.cta { background: var(--amber-grad); color: var(--amber-ink); box-shadow: 0 4px 12px rgba(246, 166, 35, .35); }
.hero { padding-top: 2.6rem; }
.eyebrow { margin: 0 0 .5rem; font-size: .8rem; font-weight: 800; letter-spacing: .22em; color: #8fdcff; text-transform: uppercase; }
.hero h1 { color: #fff; text-shadow: 0 2px 14px rgba(0, 20, 70, .45); margin-bottom: .6rem; }
.hero .lead { color: #dcebff; max-width: 38em; margin: 0; }
.site-foot { color: var(--muted); font-size: .875rem; padding: 1.5rem 0 2rem; text-align: center; border-top: 1px solid var(--line-soft); }

/* ───────── 卡片、表單 ───────── */
.card {
  position: relative; overflow: hidden; background: var(--card); backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, .95); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.75rem 1.5rem 1.5rem; margin-bottom: 1.5rem;
}
.card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: var(--grad); }
.field { margin-bottom: 1.25rem; border: 0; padding: 0; min-width: 0; }
.field > label, .field > legend { display: block; font-weight: 700; color: var(--navy); margin-bottom: .4rem; padding: 0; }
.req { color: #e0780a; margin-left: .25rem; }
.hint { color: var(--muted); font-size: .9rem; margin: .25rem 0 0; }
input[type=text], input[type=password], input[type=search], input[type=date], input[type=time], input[type=number], select, textarea {
  width: 100%; min-height: 48px; padding: .6rem .85rem; font: inherit; color: var(--text);
  background: var(--field); border: 1px solid var(--line); border-radius: var(--radius-sm);
}
input:focus, select:focus, textarea:focus { border-color: var(--blue); outline: 3px solid rgba(10, 95, 208, .18); }
::placeholder { color: #8aa2bd; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem; min-height: 48px; padding: .55rem 1.5rem;
  font: inherit; font-weight: 800; letter-spacing: .06em; cursor: pointer; text-decoration: none;
  color: #fff; background: var(--grad); border: 0; border-radius: var(--radius-sm);
  box-shadow: 0 6px 16px rgba(10, 95, 208, .28);
}
.btn:hover { filter: brightness(1.07); color: #fff; }
.btn-ghost { background: #fff; color: var(--blue); border: 1px solid var(--line); box-shadow: none; }
.btn-ghost:hover { background: #eef7ff; color: #0846a0; filter: none; border-color: var(--blue); }
.btn-danger { background: #fff; color: var(--danger); border: 1px solid #e8aaaa; box-shadow: none; }
.btn-danger:hover { background: var(--danger-bg); color: var(--danger); filter: none; }
.btn-cta { background: var(--amber-grad); color: var(--amber-ink); box-shadow: 0 6px 16px rgba(246, 166, 35, .35); }
.btn-cta:hover { color: var(--amber-ink); }
.btn-sm { min-height: 36px; padding: .2rem .9rem; font-size: .9rem; letter-spacing: .02em; }
.btn-block { width: 100%; }
.link { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.actions { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
form.inline { display: inline; }

.alert { border: 1px solid; border-radius: 14px; padding: .9rem 1.1rem; margin-bottom: 1.25rem; }
.alert ul { margin: .35rem 0 0; padding-left: 1.2rem; }
.alert-error { background: var(--danger-bg); border-color: #e59a9a; color: #7a1d1d; }
.alert-ok { background: var(--ok-bg); border-color: #7fd0aa; color: #0d5a3a; }
.alert-warn { background: var(--warn-bg); border-color: var(--warn-line); color: #6b4d00; }

/* ───────── 前台：場次選擇 ───────── */
.day { margin-bottom: 1.1rem; }
.day h3 { font-size: .95rem; color: var(--blue); margin-bottom: .55rem; padding-bottom: .35rem; border-bottom: 1px solid var(--line-soft); }
.opt {
  display: flex; align-items: center; gap: .8rem; padding: .75rem .95rem; margin-bottom: .5rem; cursor: pointer;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
}
.opt:hover { border-color: var(--blue); }
.opt:has(input:checked) { border-color: var(--blue); background: #e8f3ff; box-shadow: inset 0 0 0 1px var(--blue); }
.opt input { width: 22px; height: 22px; accent-color: var(--blue); flex: none; }
.opt-main { font-weight: 700; color: var(--navy); }
.opt-time { color: var(--muted); font-variant-numeric: tabular-nums; margin-left: auto; }
.opt.is-disabled { opacity: .6; cursor: not-allowed; background: #eef3f8; }
.opt.is-disabled:hover { border-color: var(--line); }
.tag { font-size: .8rem; padding: .05rem .6rem; border-radius: 99px; border: 1px solid #e59a9a; color: var(--danger); background: #fff; white-space: nowrap; }
.tag-ok { border-color: #7fd0aa; color: var(--ok); background: var(--ok-bg); }
.tag-mute { border-color: var(--line); color: var(--muted); background: #f2f7fc; }
.tag-warn { border: 1px dashed var(--warn-line); color: #7a5a00; background: #fff4cf; }

/* ───────── 報名代碼：整站最醒目的元素 ───────── */
.pass { position: relative; background: var(--card-solid); border: 1px solid var(--line); border-radius: 4px; padding: 1.6rem 1.5rem 1.5rem; margin: 1.25rem 0; box-shadow: var(--shadow); }
.pass::before, .pass::after { content: ""; position: absolute; width: 24px; height: 24px; border: 4px solid var(--amber); }
.pass::before { top: -3px; left: -3px; border-right: 0; border-bottom: 0; }
.pass::after { bottom: -3px; right: -3px; border-left: 0; border-top: 0; }
.pass-label { color: var(--muted); font-weight: 600; margin: 0 0 .5rem; }
.pass-code {
  font: 800 clamp(1.8rem, 8.5vw, 2.9rem)/1.1 var(--mono); letter-spacing: .05em; color: #fff;
  background: linear-gradient(135deg, var(--hero-1), var(--blue)); border-radius: 12px;
  padding: 1rem 1.1rem; margin: 0 0 1.3rem; word-break: break-all; user-select: all; text-shadow: 0 2px 10px rgba(0, 20, 70, .4);
}
.pass dl { display: grid; grid-template-columns: 5em 1fr; gap: .5rem 1rem; margin: 0; }
.pass dt { color: var(--muted); }
.pass dd { margin: 0; color: var(--navy); font-weight: 600; }
.pass ul { margin: 0; padding: 0; list-style: none; }
.pass li { padding: .15rem 0; }
.pass.is-cancelled .pass-code { background: #8da0b6; text-decoration: line-through; text-shadow: none; }

/* ───────── 登入 ───────── */
.narrow { width: min(100% - 2rem, 440px); margin-inline: auto; }
.countdown { font: 800 1.4rem var(--mono); }

/* ───────── 後台 ───────── */
body.admin .wrap, body.admin main.wrap { width: min(100% - 2rem, 1180px); }
.topbar { background: linear-gradient(135deg, var(--hero-1), var(--hero-2)); color: #fff; border-bottom: 4px solid var(--amber); }
.topbar .bar { display: flex; align-items: center; gap: .75rem 1.5rem; flex-wrap: wrap; padding: .85rem 0; }
.topbar .brand { font-weight: 800; color: #fff; text-decoration: none; letter-spacing: .04em; }
.topbar nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.topbar nav a { color: #bcd7f7; text-decoration: none; padding: .25rem 0; border-bottom: 2px solid transparent; font-weight: 600; }
.topbar nav a:hover, .topbar nav a[aria-current="page"] { color: #fff; border-bottom-color: #5fd0ff; }
.who { margin-left: auto; display: flex; gap: 1rem; align-items: center; font-size: .9rem; color: #cfe3fb; }
.who a, .who .link { color: #fff; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.page-head h1 { margin: 0; font-size: 1.7rem; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat { background: var(--card); border: 1px solid #fff; border-radius: 18px; box-shadow: var(--shadow); padding: 1rem 1.2rem; }
.stat b { display: block; font: 800 2.2rem/1.1 var(--mono); color: var(--blue); }
.stat span { color: var(--muted); font-size: .9rem; }
.stat.is-main { background: linear-gradient(135deg, var(--hero-1), var(--blue)); }
.stat.is-main b { color: #fff; font-size: 2.8rem; }
.stat.is-main span { color: #cfe3fb; }

.table-wrap { overflow-x: auto; border: 1px solid #fff; border-radius: 18px; background: var(--card); box-shadow: var(--shadow); margin-bottom: 1rem; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { padding: .7rem .9rem; text-align: left; vertical-align: top; }
th { background: var(--grad); color: #fff; font-weight: 700; white-space: nowrap; }
tbody tr:nth-child(even) { background: rgba(214, 236, 252, .55); }
tbody tr:hover { background: rgba(190, 224, 250, .6); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.code { font-family: var(--mono); white-space: nowrap; }
.bar-track { height: 8px; min-width: 90px; background: #d3e6f6; border-radius: 4px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--grad); }
.bar-fill.is-full { background: linear-gradient(135deg, #e05252, #f08a5d); }
.chips { display: flex; flex-wrap: wrap; gap: .3rem; }
.chip { font-size: .82rem; padding: .05rem .55rem; background: #fff; border: 1px solid var(--line); color: var(--navy); border-radius: 6px; white-space: nowrap; }

.filters { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: .75rem; align-items: end; margin-bottom: 1rem; padding-top: 1.5rem; }
.filters .field { margin: 0; }
.filters label { font-size: .85rem; color: var(--muted); font-weight: 600; margin-bottom: .2rem; }
.pager { display: flex; gap: .75rem; align-items: center; justify-content: center; margin: 1rem 0; color: var(--muted); }
.kv { display: grid; grid-template-columns: 7em 1fr; gap: .55rem 1rem; margin: 0 0 1rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; color: var(--navy); font-weight: 600; }
.two-col { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 900px) { .two-col { grid-template-columns: 1fr 1fr; } }
.secret { font: 800 1.6rem var(--mono); color: var(--navy); padding: .75rem 1rem; background: var(--warn-bg); border: 1px dashed var(--warn-line); border-radius: var(--radius-sm); word-break: break-all; user-select: all; }
.flush { margin: 0; }
.col-bar { min-width: 140px; }
.narrow-form { max-width: 560px; }

@media (max-width: 560px) {
  .opt { flex-wrap: wrap; }
  .opt-time { margin-left: 0; width: 100%; padding-left: calc(22px + .8rem); }
  .pass dl, .kv { grid-template-columns: 1fr; gap: .15rem; }
  .pass dd, .kv dd { margin-bottom: .6rem; }
  .who { margin-left: 0; width: 100%; }
  .pill { border-radius: 0 0 20px 20px; padding: .6rem .9rem; }
}
@media print { .pill, .topbar, .site-foot, .actions { display: none; } body { background: #fff; } .hero-wrap { background: #fff; color: #000; } .hero h1 { color: #000; text-shadow: none; } .pass-code { background: #fff; color: #000; border: 2px solid #000; text-shadow: none; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }
.w0 { width: 0%; }
.w5 { width: 5%; }
.w10 { width: 10%; }
.w15 { width: 15%; }
.w20 { width: 20%; }
.w25 { width: 25%; }
.w30 { width: 30%; }
.w35 { width: 35%; }
.w40 { width: 40%; }
.w45 { width: 45%; }
.w50 { width: 50%; }
.w55 { width: 55%; }
.w60 { width: 60%; }
.w65 { width: 65%; }
.w70 { width: 70%; }
.w75 { width: 75%; }
.w80 { width: 80%; }
.w85 { width: 85%; }
.w90 { width: 90%; }
.w95 { width: 95%; }
.w100 { width: 100%; }