:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --border: #3d4f66;
  --text: #e7ecf3;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --ok: #22c55e;
  --bad: #ef4444;
  --gap: 0.75rem;
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, sans-serif;
  margin: 0;
  /* 瀏海、圓角與 Home 指示條（PWA 全螢幕時）不擋內容 */
  padding: max(var(--gap), env(safe-area-inset-top)) max(var(--gap), env(safe-area-inset-right))
    max(var(--gap), env(safe-area-inset-bottom)) max(var(--gap), env(safe-area-inset-left));
  background: var(--bg);
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
}

h1 {
  font-size: 1.25rem;
  margin: 0;
  flex: 1;
}

h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.badge {
  font-size: 0.75rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.badge.on {
  background: var(--ok);
  border-color: var(--ok);
  color: var(--bg);
}

.badge.off {
  background: var(--bad);
  border-color: var(--bad);
  color: #fff;
}

main {
  display: grid;
  gap: var(--gap);
  margin-top: var(--gap);
}

/* 卡片：窄螢幕一欄，寬螢幕自動多欄 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: var(--gap);
}

.panel {
  background: var(--panel);
  border-radius: 8px;
  padding: var(--gap);
}

.card h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--bad);
}

.dot.on {
  background: var(--ok);
}

.card.offline .kv {
  opacity: 0.5;
}

.kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.15rem 0.75rem;
  font-size: 0.85rem;
  margin: 0 0 0.5rem;
}

.kv dt {
  color: var(--muted);
}

.kv dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.led {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.1rem 0.4rem;
  margin-right: 0.25rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
}

.led.on {
  background: var(--ok);
  border-color: var(--ok);
  color: var(--bg);
}

.cmd {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cmd input {
  flex: 1 1 10rem;
  min-width: 0;
  font-size: 16px; /* iOS 對小於 16px 的輸入框聚焦時會自動放大頁面 */
  padding: 0.45rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: inherit;
}

button {
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}

button.alt {
  background: var(--border);
}

/* 下載連結做成按鈕的樣子 */
a.btn {
  display: inline-block;
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  background: var(--border);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
}

a.btn.main {
  background: var(--accent);
}

button.danger {
  background: var(--bad);
}

button.link {
  background: transparent;
  color: #93c5fd;
  text-decoration: underline;
  padding: 0;
}

@media (pointer: coarse) {
  button,
  .cmd input {
    min-height: 44px;
  }
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
}

#events {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 40vh;
  overflow: auto;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
}

#events li {
  padding: 0.15rem 0;
  border-bottom: 1px solid var(--border);
  overflow-wrap: anywhere;
}

#events .warn {
  color: #fbbf24;
}

#events .notice {
  color: #fbbf24;
}

#events .error {
  color: var(--bad);
}

.stale {
  opacity: 0.5;
}

.card h2 .open {
  margin-left: auto;
  font-size: 0.85rem;
  font-weight: 400;
  color: #93c5fd;
}

/* dongle 清單 */
#dongle-table {
  width: 100%;
  border-collapse: collapse;
}

#dongle-table th {
  text-align: left;
  font-weight: normal;
  color: var(--muted);
  font-size: 0.8rem;
}

#dongle-table th,
#dongle-table td {
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

#dongle-table tbody tr {
  cursor: pointer;
}

#dongle-table tr.sel {
  background: rgba(59, 130, 246, 0.2);
}

#dongle-table tr.offline td {
  color: var(--muted);
}

/* 窄螢幕（手機）：表格改成一台一張卡片，每個欄位前面顯示欄名；不再左右捲動 */
@media (max-width: 640px) {
  #dongle-table thead {
    display: none;
  }

  #dongle-table,
  #dongle-table tbody,
  #dongle-table tr,
  #dongle-table td {
    display: block;
    width: 100%;
  }

  #dongle-table tbody tr {
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--border);
  }

  #dongle-table td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.15rem 0;
    border: 0;
    text-align: right;
  }

  #dongle-table td[data-label]::before {
    content: attr(data-label);
    color: var(--muted);
    text-align: left;
  }

  #dongle-table td.name {
    font-weight: 600;
    font-size: 1.05rem;
    justify-content: flex-start;
    text-align: left;
  }

  #dongle-table td:empty {
    display: none;
  }

  #dongle-table td.act {
    justify-content: flex-end;
    padding-top: 0.3rem;
  }

  #dongle-table td.act a,
  #dongle-table td.act button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

/* 摺疊面板的標題：整列都可以點，標題文字不要有多餘的邊距 */
details.panel > summary {
  cursor: pointer;
  list-style-position: inside;
}

details.panel > summary > h2 {
  display: inline;
  margin: 0;
}

/* 觸控：連結與按鈕至少 44 px 高，點得到 */
@media (pointer: coarse) {
  button.link,
  .btn,
  a.btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  html {
    touch-action: manipulation; /* 不要雙擊縮放：點兩下不該放大頁面 */
  }
}

header h1 {
  white-space: nowrap;
}

/* 登入視窗 */
dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  max-width: min(22rem, 92vw);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

dialog label {
  display: block;
  margin: 0.6rem 0;
}

dialog input {
  display: block;
  width: 100%;
  margin-top: 0.2rem;
}

dialog .row {
  display: flex;
  gap: 0.5rem;
}

.err {
  color: var(--bad);
  min-height: 1.2em;
  margin: 0;
}

#dongle-table a {
  color: var(--accent);
}

/* 還沒登入：整個頁面只有登入畫面 */
body.logged-out main,
body.logged-out #dongles,
body.logged-out #default-admin-warning {
  display: none;
}

.warn {
  color: #fbbf24;
  font-size: 0.85rem;
  margin: 0.4rem 0;
}

dialog label[hidden] { display: none; }