:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #6b7385; --line: #e2e5eb;
  --accent: #2f6fed; --ok: #1f8a4c; --err: #c62f3b; --warn: #b7791f;
  --yt: #e62117; --ig: #c13584; --tt: #111;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14171d; --card: #1d2129; --text: #e6e9ef; --muted: #97a0b3; --line: #2d323d;
          --accent: #6b9bff; --ok: #4cc47f; --err: #ff6b76; --tt: #e6e9ef; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.6 system-ui, -apple-system, "Noto Sans TC", "Microsoft JhengHei", sans-serif;
       background: var(--bg); color: var(--text); }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
       padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
nav a { margin-left: 14px; color: var(--muted); text-decoration: none; }
nav a.on { color: var(--accent); font-weight: 600; }
main { max-width: 860px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 22px; } h2 { font-size: 17px; margin: 0 0 10px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.card-head { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
label { display: block; margin: 10px 0; }
label.inline { display: inline-flex; align-items: center; gap: 6px; margin-right: 14px; }
input:not([type=checkbox]):not([type=radio]), textarea, select {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: inherit;
  background: var(--bg); border: 1px solid var(--line); border-radius: 6px; }
input[type=file] { padding: 6px; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.row > label { flex: 1 1 200px; }
.row > label.inline { flex: 0 0 auto; }
button, .button { display: inline-block; padding: 7px 14px; font: inherit; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--accent); color: #fff; text-decoration: none; }
button.ghost { background: transparent; color: var(--muted); border-color: var(--line); }
button.big { width: 100%; padding: 12px; font-size: 17px; margin-top: 8px; }
button:disabled { opacity: .6; cursor: wait; }
.toggle { font-size: 16px; margin: 0; }
.platform.disabled { opacity: .55; }
.platform .fields { margin-top: 8px; border-top: 1px dashed var(--line); padding-top: 4px; }
.schedule { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 10px 0; }
.schedule label { margin: 0; display: inline-flex; gap: 4px; }
.schedule input[type=datetime-local] { width: auto; margin: 0; }
.hint, .muted { color: var(--muted); font-size: 13px; }
.count { float: right; color: var(--muted); font-size: 12px; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; background: #e7f1ff; color: #1b4aa8; }
.flash.error { background: #fdecee; color: var(--err); }
@media (prefers-color-scheme: dark) { .flash { background: #1e2c48; color: #a9c4ff; } .flash.error { background: #3b1f24; } }
.ok { color: var(--ok); } .err { color: var(--err); display: block; font-size: 13px; }
.plat-youtube { color: var(--yt); } .plat-instagram { color: var(--ig); } .plat-tiktok { color: var(--tt); }
table.targets { width: 100%; border-collapse: collapse; }
table.targets td { padding: 6px 8px; border-top: 1px solid var(--line); vertical-align: top; }
td.plat { font-weight: 600; white-space: nowrap; } td.result { word-break: break-all; font-size: 13px; }
td.actions form { margin: 0; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; white-space: nowrap; border: 1px solid; }
.s-pending { color: var(--warn); } .s-running { color: var(--accent); } .s-done { color: var(--ok); }
.s-failed { color: var(--err); } .s-cancelled { color: var(--muted); }
.steps li { margin-bottom: 10px; }
code { background: var(--bg); padding: 1px 5px; border-radius: 4px; word-break: break-all; }
@media (max-width: 600px) {
  table.targets, table.targets tbody, table.targets tr, table.targets td { display: block; }
  table.targets tr { border-top: 1px solid var(--line); padding: 6px 0; }
  table.targets td { border: 0; padding: 2px 0; }
}

/* 登入 / 使用者 */
nav { display: flex; align-items: center; flex-wrap: wrap; }
.inline-form { display: inline; margin-left: 14px; }
button.small { padding: 3px 10px; font-size: 13px; }
.card.narrow { max-width: 420px; margin: 40px auto; }
.card.narrow label { display: block; margin-bottom: 10px; }
.card.narrow input { width: 100%; box-sizing: border-box; }
td.actions form { display: inline-block; margin: 2px 4px 2px 0; }
td.actions form.row { display: inline-flex; gap: 6px; align-items: center; }