/* course-online.css — 線上寫歌課（預購頁＋學員區）
   疊在 /css/service-page.css 上面：顏色、字體、邊框陰影全部沿用那套。
   crs-* 元件照抄 /course/index.html 的同名樣式，讓兩頁看起來是同一門課。
   /course-group/（實體小班）與 /course-hub/（寫歌課總覽）也引用這一份，改樣式時三頁都要看。 */

.crs-lede { font-size: 1.02rem; margin-bottom: 18px; }
.crs-tagline { margin: 10px 0 0; font-size: 1.05rem; line-height: 1.6; opacity: .85; }
.crs-sec {
  border: 4px solid var(--ink);
  background: #fffdf4;
  box-shadow: 6px 6px 0 var(--shadow);
  padding: 20px 22px;
  margin-bottom: 22px;
}
.crs-sec h2 {
  font-size: 1.15rem;
  color: var(--brass-deep);
  margin-bottom: 12px;
  letter-spacing: .05em;
}
.crs-sec p { margin-bottom: 10px; }
.crs-sec p:last-child { margin-bottom: 0; }
.crs-week { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--paper-edge); }
.crs-week:last-child { border-bottom: none; }
.crs-week .no { flex: 0 0 5.2em; white-space: nowrap; color: var(--brass); font-weight: 700; }
.crs-week .t b { display: block; }
.crs-week .t span { color: var(--ink-soft); font-size: .92rem; display: block; }
.crs-week .t .meta { color: var(--ink-mute); font-size: .84rem; margin-top: 2px; }
.crs-plan {
  border: 3px solid var(--ink);
  background: #f6efdc;
  border-color: var(--brass-deep);
  padding: 16px 18px;
  box-shadow: 4px 4px 0 var(--shadow);
}
.crs-plan .tag {
  display: inline-block;
  font-size: .78rem;
  padding: 2px 10px;
  margin-bottom: 8px;
  color: #fff;
  background: var(--brass);
}
.crs-plan h3 { font-size: 1.05rem; margin-bottom: 6px; }
.crs-price { margin: 10px 0 4px; }
.crs-price .now { font-size: 1.5rem; font-weight: 700; color: var(--brass-deep); }
.crs-price .was { color: var(--ink-mute); text-decoration: line-through; margin-left: 8px; }
.crs-price .note { display: block; color: var(--ink-soft); font-size: .85rem; }
.crs-btn {
  display: block;
  width: 100%;
  text-align: center;
  margin-top: 12px;
  padding: 12px 14px;
  border: 3px solid var(--ink);
  background: var(--brass);
  color: #fff;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--shadow);
  cursor: pointer;
}
.crs-btn:hover { background: var(--brass-deep); }
.crs-btn:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--shadow); }
.crs-btn[disabled] { opacity: .55; cursor: wait; }
.crs-btn[hidden] { display: none; }   /* .crs-btn 的 display 會蓋過 hidden 屬性 */
.crs-btn.alt { background: var(--paper); color: var(--quest); }
.crs-btn.alt:hover { background: var(--paper-soft); }
.crs-btn.inline { display: inline-block; width: auto; padding: 6px 14px; margin-top: 0; font-size: .9rem; box-shadow: 3px 3px 0 var(--shadow); }
.crs-faq dt { font-weight: 700; margin-top: 12px; }
.crs-faq dd { color: var(--ink-soft); margin-left: 0; }
.crs-flow { color: var(--ink-soft); font-size: .88rem; margin-top: 10px; }
.crs-list { list-style: none; margin: 6px 0; }
.crs-list li { padding-left: 1.2em; position: relative; margin-bottom: 4px; }
.crs-list li::before { content: "▸"; position: absolute; left: 0; color: var(--brass); }

/* ---------- 表單 ---------- */
.crs-field { margin: 12px 0; }
.crs-field label { display: block; font-size: .92rem; margin-bottom: 4px; }
.crs-field .hint { display: block; color: var(--ink-mute); font-size: .82rem; margin-top: 3px; }
.crs-input {
  width: 100%;
  font: inherit;
  font-size: 1rem;
  padding: 9px 12px;
  border: 3px solid var(--ink);
  background: #fffdf4;
  color: var(--ink);
  border-radius: 0;
}
.crs-input:focus { outline: 3px solid var(--brass-light); outline-offset: 0; }
.crs-input.code { letter-spacing: .5em; font-size: 1.4rem; text-align: center; max-width: 260px; }
.crs-check { display: flex; gap: 8px; align-items: flex-start; margin: 10px 0; font-size: .92rem; }
.crs-check input { margin-top: .45em; width: 18px; height: 18px; accent-color: var(--brass-deep); flex: 0 0 auto; }
.crs-msg { margin-top: 12px; padding: 10px 14px; font-size: .92rem; border: 2px dashed var(--brass); background: var(--paper); }
.crs-msg.err { border-color: #b83a2a; color: #8a2a1e; }
.crs-msg[hidden] { display: none; }
/* 直接放在頁面上（不在區塊裡）的提示：上下留跟區塊一樣的間距，不要貼著下面的框 */
.svc-wrap > .crs-msg { margin: 0 0 22px; }
.lrn-nav + .crs-msg { margin-top: 14px; }
/* 預購頁「看課程目錄」：下面留間距，不要貼著「適合誰」的框 */
#catalogueBtn { margin-bottom: 22px; }
.crs-linkbtn { background: none; border: none; padding: 0; font: inherit; color: var(--quest); border-bottom: 2px solid var(--quest); cursor: pointer; }
.crs-linkbtn[disabled] { color: var(--ink-mute); border-color: var(--ink-mute); cursor: default; }

/* ---------- 學員區 ---------- */
.lrn-bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; font-size: .88rem; color: var(--ink-soft); }
.lrn-unit { display: block; color: inherit; text-decoration: none; }
/* 鎖住的單元不再整列調淡：預購期間四個單元全是鎖住的，整份目錄會變成一片灰（集數／分鐘那行對比只剩 2.7:1） */
.lrn-unit.locked { opacity: 1; }
a.lrn-unit:hover .t b { color: var(--quest); }
.lrn-done { color: #4a8b3a; font-size: .84rem; font-weight: 700; }
.lrn-progress { height: 12px; border: 3px solid var(--ink); background: var(--paper); margin: 8px 0 4px; }
.lrn-progress > i { display: block; height: 100%; background: var(--brass); width: 0; }

.lrn-videos { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 14px; }
.lrn-vbtn { border: 3px solid var(--ink); background: var(--paper); color: var(--ink); font: inherit; font-size: .86rem; padding: 5px 10px; box-shadow: 3px 3px 0 var(--shadow); cursor: pointer; text-align: left; }
.lrn-vbtn[aria-current="true"] { background: var(--brass-light); }
.lrn-vbtn[disabled] { opacity: .5; cursor: default; }

/* 播放器（YouTube 嵌入）。浮水印（預設關，WATERMARK=true 才有）蓋在 iframe 上面，pointer-events:none 不擋操作；
   有浮水印時 iframe 不給 allowfullscreen，全螢幕改用我們自己的按鈕放大整個框，浮水印才會跟著。 */
.lrn-player { position: relative; width: 100%; aspect-ratio: 16 / 9; background: #1a140b; border: 4px solid var(--ink); box-shadow: 6px 6px 0 var(--shadow); overflow: hidden; }
.lrn-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.lrn-player .empty { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--paper-edge); padding: 20px; text-align: center; font-size: .95rem; }
.lrn-wm { position: absolute; inset: 0; pointer-events: none; z-index: 3; overflow: hidden; user-select: none; -webkit-user-select: none; }
.lrn-wm span { position: absolute; font-family: "Noto Sans TC", sans-serif; font-size: clamp(11px, 1.6vw, 15px); color: #fff; opacity: .16; white-space: nowrap; transform: rotate(-12deg); text-shadow: 0 0 2px #000; transition: left 1.2s ease, top 1.2s ease; }
.lrn-player:fullscreen { border: 0; box-shadow: none; aspect-ratio: auto; }
.lrn-player:-webkit-full-screen { border: 0; box-shadow: none; }
.lrn-tools { display: flex; justify-content: flex-end; gap: 8px; margin: 10px 0 18px; }
.lrn-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 6px; }
.lrn-nav a { color: var(--quest); font-size: .92rem; }
@media (prefers-reduced-motion: reduce) { .lrn-wm span { transition: none; } }

/* ---------- 待定標記與小標（預購頁、實體小班頁、總入口共用） ----------
   .crs-tbd：還沒定案、要老闆決定的地方。定案後把整個 span 換成正式文字。 */
.crs-tbd { display: inline-block; padding: 0 6px; margin: 0 2px; border: 2px dashed #b83a2a; background: #fff3e6; color: #8a2a1e; font-weight: 700; font-size: .9em; line-height: 1.5; }
.crs-sub { font-size: 1rem; color: var(--quest); margin: 14px 0 4px; }
.crs-sec > h2 + .crs-sub { margin-top: 2px; }

/* 上課資訊：左欄項目、右欄內容；手機一樣兩欄，左欄固定寬 */
.crs-info { display: grid; grid-template-columns: 4.5em minmax(0, 1fr); gap: 6px 12px; }
.crs-info dt { color: var(--brass-deep); font-weight: 700; }
.crs-info dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }

/* ---------- 總入口卡片（/course-hub/） ---------- */
.hub-cards { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; margin-bottom: 22px; }
.hub-cards .crs-plan { display: flex; flex-direction: column; background: var(--paper-soft); border-color: var(--ink); min-width: 0; }
.hub-cards .crs-plan.main { grid-column: 1 / -1; background: #f6efdc; border-color: var(--brass-deep); }
.hub-cards .crs-plan .tag { align-self: flex-start; }
.hub-cards .crs-plan .tag.soft { background: var(--quest); }
.hub-cards .crs-plan .fit { color: var(--ink-soft); font-size: .95rem; margin-bottom: 6px; }
.hub-cards .crs-plan .facts { color: var(--ink-mute); font-size: .86rem; }
.hub-cards .crs-plan .crs-btn { margin-top: auto; }
.hub-cards .crs-plan .crs-price { margin-bottom: 8px; }
@media (max-width: 620px) { .hub-cards { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 集數清單、鎖住的集、交作業、後台（MVP） ---------- */
.lrn-eps { list-style: none; margin: 0; padding: 0; }
.lrn-eps li + li { border-top: 1px dashed var(--paper-edge); }
.lrn-ep { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 4px; background: none; border: 0; font: inherit; color: var(--ink); text-align: left; cursor: pointer; min-height: 44px; }
.lrn-ep:hover .ep-t { color: var(--quest); }
.lrn-ep[aria-current="true"] { background: var(--paper-soft); }
.lrn-ep .ep-no { flex: 0 0 2.2em; color: var(--brass); font-weight: 700; text-align: right; }
.lrn-ep .ep-t { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
.lrn-ep .ep-m { flex: 0 0 auto; color: var(--ink-mute); font-size: .84rem; white-space: nowrap; }
.lrn-ep.locked .ep-t { color: var(--ink-mute); }
.ep-tag { display: inline-block; font-size: .74rem; padding: 0 7px; margin-left: 6px; border: 2px solid var(--ink); vertical-align: 1px; white-space: nowrap; }
.ep-tag.free { background: #e3efd5; border-color: #4a8b3a; color: #2f5e24; }
.ep-tag.lock { background: var(--paper); color: var(--ink-soft); border-color: var(--ink-mute); }
.lrn-lock { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 16px; text-align: center; background: #f6efdc; color: var(--ink); z-index: 4; overflow-y: auto; }
.lrn-lock b { font-size: 1.05rem; }
.lrn-lock .crs-btn { width: auto; display: inline-block; padding: 9px 22px; }
.lrn-lock .sub { font-size: .86rem; color: var(--ink-soft); }
.lrn-lock[hidden] { display: none; }
.lrn-now { margin: 12px 0 6px; font-weight: 700; overflow-wrap: anywhere; }
.lrn-cta { border-color: var(--brass-deep); background: #f6efdc; }
.lrn-cta .crs-btn { margin-top: 10px; }
.hw-file { display: block; width: 100%; font: inherit; font-size: .92rem; padding: 8px; border: 3px dashed var(--ink-mute); background: #fffdf4; }
textarea.crs-input { min-height: 8em; resize: vertical; line-height: 1.7; }
.hw-list { list-style: none; margin: 12px 0 0; padding: 0; }
.hw-list li { border-top: 1px dashed var(--paper-edge); padding: 8px 0; font-size: .9rem; color: var(--ink-soft); overflow-wrap: anywhere; }
.hw-st { display: inline-block; font-size: .76rem; padding: 0 7px; border: 2px solid var(--ink-mute); margin-left: 6px; }
.hw-st.reviewed { border-color: #4a8b3a; color: #2f5e24; background: #e3efd5; }

.adm-tabs { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.adm-row { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 6px 10px; padding: 10px 0; border-top: 1px dashed var(--paper-edge); }
.adm-row:first-of-type { border-top: 0; }
.adm-row .ord { display: flex; flex-direction: column; gap: 4px; }
.adm-row .ord button { width: 36px; height: 30px; border: 2px solid var(--ink); background: var(--paper); font: inherit; cursor: pointer; }
.adm-row .ord button[disabled] { opacity: .35; cursor: default; }
.adm-row .flds { display: grid; grid-template-columns: minmax(0, 1fr) 9.5em 4.5em; gap: 6px; align-items: center; }
.adm-row .flds .crs-input { padding: 6px 8px; font-size: .9rem; border-width: 2px; }
.adm-row .acts { grid-column: 2; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: .86rem; }
.adm-row .acts .crs-btn.inline { font-size: .82rem; padding: 4px 10px; }
.adm-row.unpub .flds { opacity: .55; }
.adm-meta { font-size: .8rem; color: var(--ink-mute); }
.adm-hw { border-top: 2px solid var(--ink); padding: 12px 0; }
.adm-hw .body { white-space: pre-wrap; background: #fffdf4; border: 2px solid var(--paper-edge); padding: 8px 10px; margin: 6px 0; overflow-wrap: anywhere; }
@media (max-width: 560px) {
  .adm-row .flds { grid-template-columns: minmax(0, 1fr) 5em; }
  .adm-row .flds .yt { grid-column: 1 / -1; grid-row: 2; }
}

/* hidden 屬性一律藏起來（.crs-btn.inline 的 display 會蓋過 .crs-btn[hidden]，全螢幕鈕因此一直露出來） */
[hidden] { display: none !important; }