:root {
  --kraft: #c8a476;
  --kraft-deep: #a9834f;
  --liner: #f7f3ec;
  --ink: #1d3557;
  --ink-soft: #4a6285;
  --text: #22201c;
  --muted: #6b6254;
  --page: #ebe3d6;
  --line: #d8cdbb;
  --ok: #2f6b3a;
  --err: #a23b2a;
  --head-text: #3b2c18;
}
@media (prefers-color-scheme: dark) {
  :root {
    --kraft: #8a6c45;
    --kraft-deep: #6e5434;
    --liner: #2a2622;
    --ink: #9fbbe0;
    --ink-soft: #7f9cc4;
    --text: #efe8dc;
    --muted: #b3a894;
    --page: #1b1916;
    --line: #463f37;
    --ok: #8fcf98;
    --err: #f0a291;
    --head-text: #f3e6d2;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
[hidden] { display: none !important; }
body {
  background: var(--page);
  color: var(--text);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--ink); }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }

/* 標題區:瓦楞紙板剖面 */
header { background: var(--kraft); padding: 1.5rem 1.25rem 0; }
.head-inner { max-width: 1080px; margin: 0 auto; }
.head-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; padding-bottom: 1rem; }
h1 { margin: 0; font-size: clamp(1.9rem, 5vw, 2.7rem); font-weight: 900; letter-spacing: .06em; line-height: 1.25; }
h1 a { color: var(--liner); text-decoration: none; text-shadow: 0 2px 0 var(--kraft-deep); }
.sub { margin: .2rem 0 0; color: var(--head-text); font-weight: 500; }
.flute { display: block; width: calc(100% + 2.5rem); margin: 0 -1.25rem; height: 28px; }
.flute .liner { fill: var(--liner); }
.flute .wave { fill: none; stroke: var(--kraft-deep); stroke-width: 3; }

.userbar { display: flex; align-items: center; gap: .9rem; flex-wrap: wrap; font-size: .92rem; color: var(--head-text); padding-top: .4rem; }
.userbar a, .linklike { color: var(--head-text); font-weight: 500; }
.who { font-weight: 700; }
.badge { margin-left: .4rem; padding: .05rem .45rem; font-size: .75rem; border-radius: 3px; background: var(--ink); color: var(--liner); vertical-align: 1px; }
.linklike { background: none; border: 0; padding: 0; font: inherit; text-decoration: underline; cursor: pointer; }
form.inline { display: inline; margin: 0; }

main { max-width: 1080px; margin: 0 auto; padding: 1.25rem 1.25rem 2rem; }
footer { text-align: center; color: var(--muted); font-size: .85rem; padding-bottom: 1.25rem; }

/* 訊息 */
.flash { margin: 0 0 1rem; padding: .6rem .9rem; border-radius: 4px; background: var(--liner); border-left: 4px solid var(--ink); }
.flash.ok { border-left-color: var(--ok); color: var(--ok); }
.flash.err { border-left-color: var(--err); color: var(--err); }

/* 按鈕與表單 */
.btn {
  font: inherit; font-size: .92rem; font-weight: 500;
  padding: .4rem .9rem; border-radius: 4px; cursor: pointer;
  background: var(--liner); color: var(--ink); border: 1px solid var(--line);
}
.btn:hover { border-color: var(--ink-soft); }
.btn.primary { background: var(--ink); color: var(--liner); border-color: var(--ink); }
.btn.danger { color: var(--err); }
.btn.small { font-size: .82rem; padding: .25rem .6rem; }
.btn:disabled { opacity: .6; cursor: wait; }
input, select {
  font: inherit; font-size: .95rem; color: var(--text);
  background: var(--page); border: 1px solid var(--line); border-radius: 4px;
  padding: .45rem .6rem; width: 100%;
}
label { display: flex; flex-direction: column; gap: .25rem; font-size: .9rem; font-weight: 500; color: var(--muted); }

.panel { background: var(--liner); border-radius: 4px; padding: 1.25rem 1.4rem; margin-bottom: 1rem; }
.panel.narrow { max-width: 420px; margin: 1rem auto; }
.panel h2 { margin: 0 0 1rem; font-size: 1.2rem; color: var(--ink); }
.stack { display: grid; gap: .9rem; }
.stack .btn { justify-self: start; padding: .5rem 1.4rem; }
.row-form { display: grid; grid-template-columns: 1fr 1fr 160px auto; gap: .8rem; align-items: end; }
@media (max-width: 700px) { .row-form { grid-template-columns: 1fr; } .row-form .btn { justify-self: start; } }
.note { margin: .8rem 0 0; font-size: .85rem; color: var(--muted); }
.back { margin: 1rem 0 0; font-size: .92rem; }

/* 使用者表格 */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--line); vertical-align: middle; white-space: nowrap; }
th { color: var(--muted); font-weight: 500; }
.you { margin-left: .3rem; color: var(--muted); font-size: .82rem; }
.pending { color: var(--err); }
.actions { display: flex; gap: .6rem; align-items: center; }
form.reset { display: flex; gap: .4rem; }
form.reset input { width: 170px; padding: .25rem .5rem; font-size: .85rem; }

/* 工具圖示:左中右三欄 */
.toolbar { display: flex; align-items: center; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.edit-actions { display: inline-flex; align-items: center; flex-wrap: wrap; gap: .6rem; }
.hint { font-size: .88rem; color: var(--muted); }
.status { font-size: .88rem; color: var(--ok); }
.status.err { color: var(--err); }

.tools { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
@media (max-width: 860px) { .tools { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .tools { grid-template-columns: 1fr; } }
.tool { position: relative; }
.tool a {
  display: flex; flex-direction: column; gap: .6rem; height: 100%;
  padding: 1rem 1.1rem 1.1rem;
  background: var(--liner); color: inherit; text-decoration: none;
  border-top: 5px solid var(--ink); border-radius: 4px;
  transition: transform .15s ease, border-color .15s ease;
}
.tool a:hover { transform: translateY(-3px); border-top-color: var(--kraft-deep); }
.icon { width: 44px; height: 44px; display: grid; place-items: center; background: var(--page); border-radius: 50%; }
.icon svg { width: 24px; height: 24px; stroke: var(--ink); fill: none; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.tool h2 { margin: 0; font-size: 1.05rem; font-weight: 700; color: var(--ink); line-height: 1.4; }
.tool p { margin: .15rem 0 0; color: var(--muted); font-size: .9rem; }
.tool .url { display: block; margin-top: .3rem; font-size: .78rem; color: var(--ink-soft); word-break: break-all; }

/* 排序模式 */
.move { display: none; position: absolute; top: .7rem; right: .7rem; gap: .3rem; }
.tools.editing .move { display: flex; }
.mv { font-size: .8rem; width: 2rem; height: 2rem; border-radius: 4px; border: 1px solid var(--line); background: var(--page); color: var(--ink); cursor: pointer; }
.tools.editing .tool a { cursor: grab; outline: 2px dashed var(--kraft-deep); outline-offset: -2px; }
.tools.editing .tool a:hover { transform: none; }
.tools.editing .tool.dragging a { opacity: .45; }

@media (prefers-reduced-motion: reduce) {
  .tool a { transition: none; }
  .tool a:hover { transform: none; }
}

/* 密碼欄的眼睛按鈕 */
.pw-wrap { position: relative; display: block; }
.pw-wrap input { padding-right: 2.6rem; }
.pw-eye {
  position: absolute; top: 50%; right: .3rem; transform: translateY(-50%);
  width: 2rem; height: 2rem; display: grid; place-items: center;
  background: none; border: 0; border-radius: 4px; cursor: pointer; color: var(--muted);
}
.pw-eye:hover { color: var(--ink); }
.pw-eye svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
form.reset .pw-wrap { display: inline-block; }
form.reset .pw-wrap input { padding-right: 2.2rem; }
form.reset .pw-eye { width: 1.7rem; height: 1.7rem; }
form.reset .pw-eye svg { width: 17px; height: 17px; }