/* ============================================================
   小蟲AI房仲實戰班 報名系統 — 海報同款藍綠配色
   ============================================================ */
:root {
  --blue: #1565d8;
  --blue-dark: #0d3b8f;
  --green: #0e8a6d;
  --green-dark: #0a6b55;
  --red: #d92b2b;
  --ink: #1f2933;
  --bg: #eef4fb;
  --card: #ffffff;
  --line: #34c659;
  --border: #d4e0ef;
  --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
  background: linear-gradient(160deg, #dbeafe 0%, var(--bg) 40%, #e6f4ef 100%);
  color: var(--ink);
  min-height: 100vh;
}

.page { max-width: 640px; margin: 0 auto; padding: 20px 14px 60px; }

/* ---- 頁首 ---- */
.hero {
  text-align: center;
  padding: 26px 16px 20px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  border-radius: var(--radius);
  color: #fff;
  margin-bottom: 18px;
  box-shadow: 0 8px 24px rgba(13, 59, 143, .25);
}
.hero h1 { font-size: 1.7rem; letter-spacing: 2px; text-shadow: 0 2px 6px rgba(0,0,0,.3); }
.season-badge {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 22px;
  background: linear-gradient(90deg, var(--green), var(--blue));
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 6px;
  font-size: 1.05rem;
}
.slogan { margin-top: 10px; font-size: .95rem; opacity: .95; }

/* ---- 卡片 ---- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px 18px;
  margin-bottom: 16px;
  box-shadow: 0 3px 14px rgba(31, 41, 51, .07);
  border: 1px solid var(--border);
}
.card h2 { font-size: 1.1rem; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.step {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--green));
  color: #fff; font-size: .9rem; flex: none;
}
.req { color: var(--red); font-size: .9rem; }

/* ---- 場次 ---- */
.session-list { display: grid; gap: 10px; }
.session-opt {
  display: flex; align-items: center; gap: 12px;
  border: 2px solid var(--border); border-radius: 12px;
  padding: 12px 14px; cursor: pointer; transition: .15s;
  background: #fff;
}
.session-opt:hover { border-color: var(--blue); }
.session-opt input { accent-color: var(--blue); width: 20px; height: 20px; flex: none; }
.session-opt.checked { border-color: var(--blue); background: #eef5ff; box-shadow: 0 0 0 3px rgba(21,101,216,.12); }
.session-city {
  font-weight: 700; font-size: 1.05rem; color: #fff;
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  padding: 4px 14px; border-radius: 999px; flex: none;
}
.session-info strong { display: block; font-size: 1rem; }
.session-info small { color: #5b6b7c; }

/* ---- 班次 ---- */
.old-student {
  display: flex; align-items: center; gap: 8px;
  background: #fff8e6; border: 1px dashed #e0a800;
  padding: 10px 12px; border-radius: 10px; margin-bottom: 12px;
  cursor: pointer; font-size: .92rem;
}
.old-student input { accent-color: #e0a800; width: 18px; height: 18px; }

.class-list { display: grid; gap: 10px; }
.class-opt {
  display: flex; align-items: center; gap: 12px;
  border: 2px solid var(--border); border-radius: 12px;
  padding: 12px 14px; cursor: pointer; transition: .15s;
}
.class-opt:hover { border-color: var(--green); }
.class-opt.checked { border-color: var(--green); background: #ecfaf5; box-shadow: 0 0 0 3px rgba(14,138,109,.12); }
.class-opt input { accent-color: var(--green); width: 20px; height: 20px; flex: none; }
.class-day {
  font-size: .78rem; color: #fff; background: var(--blue);
  padding: 3px 8px; border-radius: 6px; flex: none;
}
.class-name { flex: 1; font-weight: 600; font-size: .98rem; }
.class-price { font-weight: 800; color: var(--red); white-space: nowrap; }
.class-price .orig { font-weight: 400; color: #97a3b0; text-decoration: line-through; font-size: .8rem; margin-right: 4px; }

.total-bar {
  margin-top: 14px;
  display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff; border-radius: 12px; padding: 12px 18px;
}
.total-bar strong { font-size: 1.5rem; letter-spacing: 1px; }

/* ---- 欄位 ---- */
.field { margin-bottom: 12px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .95rem; }
.field input {
  width: 100%; padding: 11px 12px; font-size: 1rem;
  border: 2px solid var(--border); border-radius: 10px; outline: none;
  transition: .15s; background: #fbfdff;
}
.field input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(21,101,216,.12); }

/* ---- 發票 ---- */
.invoice-options { display: grid; gap: 10px; }
.invoice-opt {
  display: flex; align-items: center; gap: 12px;
  border: 2px solid var(--border); border-radius: 12px;
  padding: 12px 14px; cursor: pointer; transition: .15s;
}
.invoice-opt:hover { border-color: var(--blue); }
.invoice-opt.checked { border-color: var(--blue); background: #eef5ff; }
.invoice-opt input { accent-color: var(--blue); width: 20px; height: 20px; flex: none; }
.invoice-opt strong { display: block; }
.invoice-opt small { color: #5b6b7c; }
.invoice-extra {
  margin: -2px 0 4px; padding: 12px 14px 4px;
  background: #f4f8fd; border-radius: 10px; border: 1px dashed var(--border);
}

/* ---- 匯款 / 上傳 ---- */
.bank-info {
  background: #f0f7f4; border: 1px solid #cde5dc; border-radius: 10px;
  padding: 12px 14px; margin-bottom: 12px; font-size: .92rem; line-height: 1.7;
}
.bank-info strong { color: var(--green-dark); }
.upload-box {
  display: block; text-align: center; cursor: pointer;
  border: 2px dashed var(--blue); border-radius: 12px;
  padding: 22px 14px; transition: .15s; background: #f8fbff;
}
.upload-box:hover { background: #eef5ff; }
.upload-box.has-file { border-style: solid; border-color: var(--green); background: #ecfaf5; }
.upload-icon { font-size: 2rem; }
.upload-box p { font-weight: 600; margin: 6px 0 2px; }
.upload-box small { color: #5b6b7c; }
#receiptPreview { max-width: 100%; max-height: 320px; border-radius: 10px; margin-top: 4px; }

/* ---- 送出 / 訊息 ---- */
.error-msg {
  background: #fdecec; color: var(--red); border: 1px solid #f5b5b5;
  border-radius: 10px; padding: 12px 14px; margin-bottom: 14px; font-weight: 600;
}
.submit-btn {
  width: 100%; padding: 15px; font-size: 1.15rem; font-weight: 800;
  color: #fff; background: linear-gradient(135deg, var(--red), #b71c1c);
  border: none; border-radius: 12px; cursor: pointer; letter-spacing: 4px;
  box-shadow: 0 6px 18px rgba(217,43,43,.3); transition: .15s;
  font-family: inherit;
}
.submit-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(217,43,43,.4); }
.submit-btn:disabled { opacity: .6; cursor: wait; transform: none; }
.submit-btn.ghost {
  background: #fff; color: var(--blue); border: 2px solid var(--blue);
  box-shadow: none; margin-top: 18px;
}

/* ---- 成功畫面 ---- */
.success-card { text-align: center; padding: 34px 20px; }
.success-icon { font-size: 3rem; }
.success-card h2 { justify-content: center; color: var(--green-dark); margin: 8px 0; font-size: 1.4rem; }
#successSummary { color: #45566a; line-height: 1.8; white-space: pre-line; }
.success-line { margin-top: 18px; line-height: 2; }
.line-btn {
  display: inline-block; margin-top: 6px; padding: 10px 26px;
  background: var(--line); color: #fff; font-weight: 800;
  border-radius: 999px; text-decoration: none; letter-spacing: 1px;
}

.footer { text-align: center; color: #8896a6; font-size: .85rem; margin-top: 10px; }

@media (max-width: 480px) {
  .hero h1 { font-size: 1.4rem; }
  .session-opt, .class-opt { flex-wrap: wrap; }
}