:root {
  --bg: #071426; --card: #102438; --text: #ecf7fb; --muted: #9aafbf;
  --primary: #148c83; --border: #2a4258; --danger: #ff819e;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11141c; --card: #1a1f2b; --text: #e8ebf3; --muted: #98a2b3; --border: #2d3446; }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, "Noto Sans TC", sans-serif; background: var(--bg); color: var(--text); }
header { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding: 16px 24px; }
h1 { font-size: 1.25rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 24px 0 8px; }
nav { display: flex; gap: 6px; }
.tab { background: transparent; color: var(--text); border: 1px solid var(--border); }
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
main { max-width: 1000px; margin: 0 auto; padding: 0 16px 48px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.card.center { align-items: center; }
.narrow { max-width: 560px; margin: 0 auto; }
label { display: flex; flex-direction: column; gap: 6px; font-size: .9rem; color: var(--muted); }
input[type=text], textarea, select { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); }
input[type=color] { width: 56px; height: 36px; padding: 0; border: 1px solid var(--border); border-radius: 8px; background: none; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
button { font: inherit; cursor: pointer; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--primary); background: var(--primary); color: #fff; }
button.secondary { background: transparent; color: var(--primary); }
button.ghost { background: transparent; color: var(--muted); border-color: var(--border); align-self: flex-start; }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); padding: 4px 10px; }
canvas { width: 100%; max-width: 380px; height: auto; border: 1px solid var(--border); border-radius: 8px; }
.hint { font-size: .8rem; color: var(--muted); margin: 0; }
.msg { min-height: 1.2em; margin: 0; font-size: .85rem; }
.pw-out { display: flex; gap: 8px; }
.pw-out input { flex: 1; font: 1.1rem ui-monospace, Consolas, monospace; min-width: 0; }
.meter { height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.meter div { height: 100%; width: 0; transition: width .2s, background .2s; }
.checks { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.checks label { flex-direction: row; align-items: center; color: var(--text); }
input[type=range] { width: 100%; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.gallery figure { margin: 0; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 10px; display: flex; flex-direction: column; gap: 6px; }
.gallery img { width: 100%; border-radius: 6px; }
.gallery figcaption { font-size: .8rem; color: var(--muted); word-break: break-all; }
.gallery .actions { display: flex; gap: 6px; }
.pwlist { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.pwlist li { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.pwlist .name { color: var(--muted); font-size: .85rem; min-width: 80px; }
.pwlist code { flex: 1; font-family: ui-monospace, Consolas, monospace; word-break: break-all; }
.empty { color: var(--muted); font-size: .9rem; }

[hidden] { display: none !important; }
fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin: 0; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
legend { font-size: .85rem; color: var(--text); padding: 0 6px; }
.opts { display: flex; flex-direction: column; gap: 10px; }
label.inline { flex-direction: row; align-items: center; color: var(--text); }
canvas { touch-action: none; }

.sect-title { font-size: .85rem; color: var(--muted); align-self: flex-start; }
.card-canvas { max-width: 100%; width: 100%; }
.tpl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.tpl { padding: 4px; background: var(--bg); color: var(--text); border: 2px solid var(--border); border-radius: 8px; display: flex; flex-direction: column; gap: 4px; font-size: .75rem; }
.tpl canvas { width: 100%; max-width: none; border-radius: 4px; border: 0; }
.tpl.active { border-color: var(--primary); }
.gallery.wide { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.card-canvas.v { max-width: 300px; }
.tpl canvas.v { width: 57%; align-self: center; }
.share { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.share input { flex: 1; min-width: 0; font-size: .75rem; padding: 4px 6px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); }
.gallery figure img + img { margin-top: 4px; }