:root {
  --ink: #0e0e0e;
  --lime: #a6ce39;
  --lime-dark: #7fa12a;
  --bg: #f3f4f1;
  --card: #ffffff;
  --line: #e2e4de;
  --muted: #6b6f66;
  --err: #b3261e;
  --ok: #2e7d32;
  --radius: 12px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", "Sukhumvit Set", "Noto Sans Thai", sans-serif;
  color: var(--ink);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); font-size: 15px; line-height: 1.5; }
a { color: inherit; }
small { color: var(--muted); font-weight: 400; font-size: .82em; }
h1, h2 { margin: 0 0 12px; line-height: 1.25; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h2.section { margin-top: 28px; }
.muted { color: var(--muted); }

/* ---------- 頂部 ---------- */
header.top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 20px; background: var(--ink); color: #fff; flex-wrap: wrap; }
header.top .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; letter-spacing: .02em; }
header.top nav { display: flex; gap: 4px; flex-wrap: wrap; }
header.top nav a { padding: 6px 12px; border-radius: 8px; text-decoration: none; color: #ddd; font-size: 14px; }
header.top nav a small { color: #999; }
header.top nav a.on, header.top nav a:hover { background: #262626; color: #fff; }
header.top nav a.on { box-shadow: inset 0 -2px 0 var(--lime); }
.mark { display: inline-block; width: 18px; height: 18px; flex: none;
  background: linear-gradient(90deg, var(--lime) 0 30%, transparent 30% 45%, var(--lime) 45% 60%, transparent 60% 72%, var(--lime) 72% 82%, transparent 82%); }
.mark.big { width: 28px; height: 28px; }

main { max-width: 1240px; margin: 0 auto; padding: 20px 16px 60px; }
main.narrow { max-width: 460px; }

/* ---------- 共用元件 ---------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
label { display: block; margin-bottom: 12px; font-weight: 600; font-size: 14px; }
label.inline { display: inline-flex; align-items: center; gap: 8px; margin: 0; }
input, select, textarea { font: inherit; width: 100%; margin-top: 4px; padding: 9px 11px; border: 1px solid #cfd2ca;
  border-radius: 8px; background: #fff; color: var(--ink); font-weight: 400; }
label.inline select { width: auto; margin: 0; }
textarea { resize: vertical; line-height: 1.5; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--lime); outline-offset: 0; border-color: var(--lime-dark); }
input[type=checkbox] { width: auto; margin: 0 6px 0 0; }
input[type=color] { width: 56px; height: 38px; padding: 2px; }
input[type=range] { padding: 0; accent-color: var(--lime-dark); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 14px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 16px; border-radius: 9px;
  border: 1px solid #cfd2ca; background: #fff; color: var(--ink); font: inherit; font-weight: 600; cursor: pointer;
  text-decoration: none; white-space: nowrap; }
.btn small { color: inherit; opacity: .7; }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--lime); border-color: var(--lime); color: var(--ink); }
.btn.primary:hover { background: #b6dc4a; }
.btn.dark { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn.danger { color: var(--err); border-color: #e7c3c0; }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.wide { width: 100%; }
.btn:disabled { opacity: .55; cursor: default; }
.flash { padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; background: #fff; border: 1px solid var(--line); }
.flash.error { background: #fdecea; border-color: #f3c1bc; color: var(--err); }
.flash.ok { background: #edf7e6; border-color: #cfe6bd; color: var(--ok); }
.flash.info { background: #f6f9ec; border-color: #dfeabb; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 99px; background: #ececec; font-size: 12px; font-weight: 600; }
.badge.ok { background: #e3f1d9; color: var(--ok); }
.badge.err { background: #fdecea; color: var(--err); }
.badge.lime { background: var(--lime); }
.progress { position: relative; height: 26px; margin-top: 12px; background: #ececec; border-radius: 99px; overflow: hidden; }
.progress > div { height: 100%; width: 0; background: var(--lime); transition: width .3s; }
.progress > span { position: absolute; inset: 0; display: grid; place-items: center; font-size: 13px; font-weight: 600; }

/* ---------- 登入 ---------- */
.login { margin-top: 8vh; text-align: center; }
.login-brand { display: flex; justify-content: center; align-items: center; gap: 10px; font-size: 24px; font-weight: 800; }
.login form { text-align: left; margin-top: 18px; }

/* ---------- 首頁 ---------- */
.upload .drop { position: relative; display: grid; place-items: center; min-height: 120px; margin-bottom: 14px;
  border: 2px dashed #c6cabd; border-radius: var(--radius); background: #fafbf8; text-align: center; cursor: pointer; font-weight: 600; }
.upload .drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; margin: 0; }
.upload .drop.over, .upload .drop.has { border-color: var(--lime-dark); background: #f4f9e6; }
.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.project { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; text-decoration: none; transition: transform .15s, box-shadow .15s; }
.project:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0, 0, 0, .08); }
.project .thumb { aspect-ratio: 16 / 10; background: #1b1b1b; }
.project .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.project .info { display: flex; flex-direction: column; gap: 3px; padding: 10px 12px 12px; }
.project .badges { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }

/* ---------- 編輯頁 ---------- */
.editor-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.editor-head input.title { flex: 1; min-width: 220px; font-size: 20px; font-weight: 700; border-color: transparent; background: transparent; margin: 0; }
.editor-head input.title:hover { border-color: #cfd2ca; }
.editor { display: grid; grid-template-columns: minmax(300px, 420px) 1fr; gap: 20px; align-items: start; }
.preview-col { position: sticky; top: 70px; }
.format-switch { display: flex; gap: 6px; margin-bottom: 10px; }
.format-switch button { flex: 1; }
.format-switch button.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.stage { position: relative; background: #111; border-radius: var(--radius); overflow: hidden; }
.stage canvas { display: block; width: 100%; height: auto; }
.stage .overlay-msg { position: absolute; inset: 0; display: grid; place-items: center; color: #fff; text-align: center; padding: 20px;
  background: rgba(0, 0, 0, .6); font-weight: 600; }
.transport { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.transport input[type=range] { flex: 1; margin: 0; }
.transport .time { font-variant-numeric: tabular-nums; font-size: 13px; color: var(--muted); min-width: 84px; text-align: right; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; overflow-x: auto; }
.tabs button { padding: 9px 14px; border: 0; background: none; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer;
  border-bottom: 3px solid transparent; white-space: nowrap; }
.tabs button.on { color: var(--ink); border-bottom-color: var(--lime); }
.panel[hidden] { display: none; }
.lang-switch { display: inline-flex; border: 1px solid #cfd2ca; border-radius: 9px; overflow: hidden; }
.lang-switch button { border: 0; background: #fff; padding: 6px 12px; font: inherit; font-weight: 600; cursor: pointer; }
.lang-switch button.on { background: var(--ink); color: #fff; }
.copy-box { position: relative; }
.copy-box textarea { min-height: 220px; }
.copy-box .btn { position: absolute; right: 8px; top: 30px; }
.cap-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; }
.ai-status { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px; background: #f6f9ec;
  border: 1px solid #dfeabb; margin-bottom: 14px; flex-wrap: wrap; }
.ai-status.err { background: #fdecea; border-color: #f3c1bc; color: var(--err); }
.checks { margin: 6px 0 0; padding-left: 20px; }
.spinner { width: 16px; height: 16px; border: 2px solid #c9d7a0; border-top-color: var(--lime-dark); border-radius: 50%;
  animation: spin .8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.presets { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.presets button.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.slider-row { display: grid; grid-template-columns: 120px 1fr 48px; align-items: center; gap: 10px; margin-bottom: 8px; font-size: 14px; }
.slider-row output { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); }
.color-shot { margin-top: 10px; width: 100%; border-radius: 10px; display: block; }
.template-pick { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.template-pick button { width: 88px; padding: 4px; border: 2px solid transparent; border-radius: 10px; background: #fff; cursor: pointer; font: inherit; font-size: 12px; }
.template-pick button img { width: 100%; border-radius: 6px; display: block; }
.template-pick button.on { border-color: var(--lime-dark); }
.render-box { margin-top: 18px; }
.mp-box { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); }
.results { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.results video { width: 100%; border-radius: 10px; background: #000; display: block; max-height: 460px; }
.saved { font-size: 13px; color: var(--muted); }

/* ---------- 設定 ---------- */
.settings section { margin-bottom: 26px; }
.settings .card + .card { margin-top: 14px; }
.list { width: 100%; border-collapse: collapse; }
.list td, .list th { padding: 8px 6px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; font-size: 14px; }
.list audio { height: 32px; max-width: 220px; }
.inline-form { display: inline-flex; gap: 6px; align-items: center; margin: 0; }
.inline-form input { width: 140px; margin: 0; padding: 5px 8px; }
.templates { display: flex; gap: 12px; flex-wrap: wrap; margin: 8px 0 12px; }
.templates figure { margin: 0; width: 120px; text-align: center; font-size: 12px; }
.templates img { width: 100%; border-radius: 8px; border: 1px solid var(--line); display: block; margin-bottom: 4px; }
.hint { font-size: 13px; color: var(--muted); margin: -4px 0 12px; }

@media (max-width: 900px) {
  .editor { grid-template-columns: 1fr; }
  .preview-col { position: static; max-width: 420px; margin: 0 auto; width: 100%; }
  .results { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid2, .grid3, .cap-row { grid-template-columns: 1fr; }
  .slider-row { grid-template-columns: 90px 1fr 40px; }
}