:root {
  color-scheme: light dark;
  --bg: #eef2ef;
  --surface: #ffffff;
  --surface-2: #f6f9f6;
  --text: #16231c;
  --muted: #5d6c63;
  --line: #dde6df;
  --line-strong: #cbd7ce;
  --green: #1f7a40;
  --green-dark: #155c30;
  --green-tint: #e8f3ec;
  --on-green: #ffffff;
  --red: #b42318;
  --red-tint: #fbeae8;
  --amber: #a35b00;
  --focus: #1f7a40;
  --shadow-sm: 0 1px 2px rgba(16, 32, 24, .05);
  --s1: 4px;  --s2: 8px;  --s3: 12px; --s4: 16px;
  --s5: 20px; --s6: 28px; --s7: 40px; --s8: 64px;
  --r-sm: 10px; --r: 14px; --r-lg: 18px;
  --font: "Segoe UI", system-ui, -apple-system, "Noto Sans Arabic", sans-serif;
  font-family: var(--font);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1511;
    --surface: #19211c;
    --surface-2: #141b17;
    --text: #e9f2ec;
    --muted: #9fb0a5;
    --line: #2d3a31;
    --line-strong: #3b4a40;
    --green: #5ec07c;
    --green-dark: #7ad396;
    --green-tint: #19281e;
    --on-green: #0f1511;
    --red: #ff8e81;
    --red-tint: #2a1a18;
    --amber: #e0a24a;
    --focus: #5ec07c;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Browser surfaces themed from the palette */
::selection { background: color-mix(in srgb, var(--green) 26%, transparent); }
* { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--muted); background-clip: padding-box; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.shell { max-width: 1120px; margin: 0 auto; padding: var(--s6) var(--s4) var(--s8); }

/* ---- Topbar / brand ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s4); margin-bottom: var(--s6);
  padding-bottom: var(--s5); border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: var(--s3); }
.brand-mark {
  display: grid; place-items: center; inline-size: 40px; block-size: 40px;
  border-radius: 12px; background: var(--green-tint); color: var(--green);
}
.brand-mark svg { inline-size: 24px; block-size: 24px; }
.brand-name { font-size: 1.12rem; font-weight: 700; letter-spacing: -.01em; }

/* ---- Icons ---- */
.icon { inline-size: 1.15em; block-size: 1.15em; flex: none; vertical-align: -.16em; }
.icon path, .icon circle, .icon line, .icon polyline, .icon rect {
  fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round;
}

h1, h2, h3, p { margin: 0; }
h2 { font-size: 1.18rem; font-weight: 700; letter-spacing: -.01em; }
h3 { font-size: 1rem; font-weight: 700; }

/* ---- Panels ---- */
.panel {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: var(--s5); box-shadow: var(--shadow-sm);
}

/* ---- Auth ---- */
.auth-panel { max-width: 520px; margin-inline: auto; margin-block-start: clamp(var(--s6), 7vh, 80px); }
.auth-panel h2 { margin-bottom: var(--s2); }
.auth-panel > .muted { margin-bottom: var(--s5); }

form { display: grid; gap: var(--s2); }
label { font-weight: 600; font-size: .95rem; margin-block-start: var(--s3); }
label:first-of-type { margin-block-start: 0; }

input {
  inline-size: 100%; border: 1px solid var(--line-strong); background: var(--surface-2);
  color: var(--text); border-radius: var(--r-sm); padding: 12px 14px; font: inherit;
  caret-color: var(--green); transition: border-color .15s, box-shadow .15s;
}
input::placeholder { color: var(--muted); }
input:hover { border-color: var(--muted); }
input:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px color-mix(in srgb, var(--green) 20%, transparent); }
input[type="email"] { direction: ltr; text-align: start; }

.field { position: relative; display: flex; }
.field input { padding-inline-end: 44px; }
.field .toggle {
  position: absolute; inset-inline-end: 4px; inset-block: 4px; inline-size: 36px;
  display: grid; place-items: center; border: 0; background: transparent;
  color: var(--muted); border-radius: 8px; cursor: pointer;
}
.field .toggle:hover { color: var(--text); background: var(--surface); }

.hint { color: var(--muted); font-size: .88rem; margin-block: var(--s1) 0; line-height: 1.6; }
.actions { display: flex; gap: var(--s3); flex-wrap: wrap; margin-block-start: var(--s5); }

/* ---- Buttons ---- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  border: 1px solid transparent; border-radius: var(--r-sm); background: var(--green);
  color: var(--on-green); padding: 11px 18px; font: inherit; font-weight: 650; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, opacity .15s; white-space: nowrap;
}
.button:hover { background: var(--green-dark); }
.button:active { transform: translateY(.5px); }
.button.secondary { background: transparent; color: var(--green); border-color: var(--line-strong); }
.button.secondary:hover { background: var(--green-tint); border-color: var(--green); color: var(--green-dark); }
.button.danger { color: var(--red); border-color: transparent; background: transparent; }
.button.danger:hover { background: var(--red-tint); }
.button:disabled { opacity: .55; cursor: wait; pointer-events: none; }
.button[data-busy="true"] .icon { animation: spin .7s linear infinite; }

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

/* ---- Account row ---- */
.account-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s4); margin-bottom: var(--s4); padding: var(--s4) var(--s5);
}
.account-row .label { color: var(--muted); font-size: .85rem; }
.account-row strong { display: block; margin-block-start: 2px; direction: ltr; text-align: start; font-size: 1.02rem; }

/* ---- Layout ---- */
.layout { display: grid; grid-template-columns: minmax(240px, 320px) minmax(0, 1fr); gap: var(--s4); align-items: start; }
.device-panel h2 { margin-bottom: var(--s4); }
.device-list { display: grid; gap: var(--s2); }

/* ---- Device buttons ---- */
.device-button {
  position: relative; inline-size: 100%; text-align: start; border: 1px solid var(--line);
  border-radius: var(--r); color: var(--text); background: var(--surface-2); padding: 13px 14px;
  font: inherit; cursor: pointer; transition: border-color .15s, background .15s, box-shadow .15s;
}
.device-button:hover { border-color: var(--line-strong); background: var(--surface); }
.device-button.selected {
  background: var(--green-tint); border-color: var(--green);
  box-shadow: inset 0 0 0 1px var(--green);
}
.device-button strong { display: block; font-weight: 650; }
.device-button small { display: block; color: var(--muted); margin-block-start: 5px; font-size: .84rem; font-variant-numeric: tabular-nums; }
.device-status-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-block-start: 7px; }
.device-presence { display: inline-flex; align-items: center; border-radius: 999px; padding: 2px 9px; font-size: .78rem; font-weight: 700; }
.device-presence.online { color: var(--green); background: var(--green-tint); }
.device-presence.offline { color: var(--muted); background: var(--surface-2); }
.device-button.selected::after {
  content: ""; position: absolute; inset-inline-end: 12px; inset-block-start: 50%;
  inline-size: 18px; block-size: 18px; margin-block-start: -9px; color: var(--green);
  background: currentColor;
  -webkit-mask: var(--check) center / contain no-repeat; mask: var(--check) center / contain no-repeat;
}
:root { --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E"); }

/* ---- Device rows + per-device actions ---- */
.device-row { display: flex; align-items: stretch; gap: var(--s2); }
.device-row .device-button { flex: 1; min-inline-size: 0; }
.device-row .device-button.selected::after { inset-inline-end: 10px; }
.device-actions { display: flex; flex-direction: column; justify-content: center; gap: var(--s1); flex: none; }
.icon-btn {
  display: grid; place-items: center; inline-size: 34px; block-size: 34px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--surface-2); color: var(--muted); cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.icon-btn:hover { color: var(--text); border-color: var(--line-strong); background: var(--surface); }
.icon-btn.danger:hover { color: var(--red); border-color: var(--red); background: var(--red-tint); }
.icon-btn .icon { inline-size: 17px; block-size: 17px; }

/* ---- Device trash section ---- */
.device-trash:not(:empty) { margin-block-start: var(--s5); padding-block-start: var(--s4); border-top: 1px dashed var(--line-strong); display: grid; gap: var(--s2); }
.device-trash-head { display: flex; align-items: center; gap: var(--s2); color: var(--muted); font-size: .9rem; font-weight: 700; margin: 0 0 var(--s1); }
.device-trash-head .icon { inline-size: 16px; block-size: 16px; }
.device-trash .device-button { opacity: .85; cursor: default; }
.device-trash .device-button:hover { background: var(--surface-2); border-color: var(--line); }

/* ---- Detail panel ---- */
.detail-panel { min-block-size: 420px; }
.placeholder { min-block-size: 360px; display: grid; align-content: center; justify-items: center; text-align: center; gap: var(--s3); padding: var(--s5); }
.placeholder .mark { display: grid; place-items: center; inline-size: 64px; block-size: 64px; border-radius: 18px; background: var(--green-tint); color: var(--green); }
.placeholder .mark svg { inline-size: 32px; block-size: 32px; }
.placeholder p { max-inline-size: 42ch; color: var(--muted); }

.loading { display: flex; align-items: center; gap: var(--s3); color: var(--muted); padding: var(--s5) 0; }
.loading .icon { color: var(--green); animation: spin .7s linear infinite; }

.detail-head { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--s3); flex-wrap: wrap; padding-bottom: var(--s4); border-bottom: 1px solid var(--line); margin-bottom: var(--s2); }
.detail-head .muted { font-size: .9rem; margin-block-start: var(--s1); font-variant-numeric: tabular-nums; }

/* ---- Category tabs ---- */
.cat-tabs { display: flex; flex-wrap: wrap; gap: var(--s2); margin-block: var(--s5) var(--s4); }
.cat-tab {
  display: inline-flex; align-items: center; gap: var(--s2); border: 1px solid var(--line);
  background: var(--surface-2); color: var(--text); border-radius: 999px; padding: 7px 14px;
  font: inherit; font-weight: 600; font-size: .92rem; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.cat-tab:hover:not(:disabled) { border-color: var(--line-strong); background: var(--surface); }
.cat-tab.selected { background: var(--green); border-color: var(--green); color: var(--on-green); }
.cat-tab:disabled { opacity: .45; cursor: not-allowed; }
.cat-tab .icon { color: var(--green); }
.cat-tab.selected .icon { color: var(--on-green); }

.count {
  font-size: .78rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--muted);
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 1px 8px; min-inline-size: 24px; text-align: center;
}
.cat-tab.selected .count { background: color-mix(in srgb, var(--on-green) 18%, transparent); border-color: transparent; color: var(--on-green); }

/* ---- Search toolbar ---- */
.list-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--s4); flex-wrap: wrap; margin-bottom: var(--s4); }
.search { position: relative; display: flex; align-items: center; flex: 1; min-inline-size: 220px; }
.search .icon { position: absolute; inset-inline-start: 13px; color: var(--muted); pointer-events: none; }
.search input {
  inline-size: 100%; padding-inline-start: 40px; padding-block: 10px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: var(--surface-2);
}
.search input::-webkit-search-cancel-button { -webkit-appearance: none; }
.result-count { color: var(--muted); font-size: .85rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.select-all { display: inline-flex; align-items: center; gap: var(--s2); color: var(--muted); font-size: .88rem; font-weight: 600; cursor: pointer; white-space: nowrap; }
.select-all input { inline-size: 17px; block-size: 17px; accent-color: var(--green); cursor: pointer; }

/* ---- Bulk action bar ---- */
.bulk-bar { display: flex; align-items: center; gap: var(--s3); flex-wrap: wrap; margin-bottom: var(--s4); padding: var(--s2) var(--s3); border: 1px solid var(--green); background: var(--green-tint); border-radius: var(--r); }
.bulk-bar[hidden] { display: none; }
.bulk-count { font-weight: 700; font-variant-numeric: tabular-nums; color: var(--text); }
.bulk-bar #bulk-action { margin-inline-start: auto; }
.button.warn { background: var(--red); color: #fff; }
.button.warn:hover { background: color-mix(in srgb, var(--red) 82%, black); }

/* ---- Records ---- */
.record-list { display: flex; flex-direction: column; }
.record { display: flex; align-items: flex-start; gap: var(--s3); padding: var(--s3) 0; border-bottom: 1px solid var(--line); }
.record:last-child { border-bottom: 0; }
.record-main { flex: 1; min-inline-size: 0; overflow-wrap: anywhere; unicode-bidi: plaintext; }
.record-check { flex: none; inline-size: 18px; block-size: 18px; margin-block-start: 3px; accent-color: var(--green); cursor: pointer; }
.record-title { font-weight: 650; }
.record-body { margin-block-start: 2px; }
.record-meta { color: var(--muted); font-size: .83rem; margin-block-start: 5px; font-variant-numeric: tabular-nums; unicode-bidi: plaintext; }
.record-deleted { display: inline-flex; align-items: center; gap: 5px; color: var(--red); background: var(--red-tint); font-size: .78rem; font-weight: 650; margin-block-start: 7px; padding: 2px 9px; border-radius: 999px; }
.empty-group { color: var(--muted); font-size: .92rem; text-align: center; padding: var(--s7) var(--s4); }

/* ---- Pager ---- */
.pager { display: flex; align-items: center; justify-content: center; gap: var(--s4); margin-block-start: var(--s5); padding-block-start: var(--s4); border-top: 1px solid var(--line); }
.pager[hidden] { display: none; }
.pager-btn { padding: 8px 16px; }
.pager-info { color: var(--muted); font-size: .85rem; font-variant-numeric: tabular-nums; text-align: center; }

/* ---- Status / footnote ---- */
.status { display: flex; align-items: center; gap: var(--s2); min-block-size: 1.4em; margin-block-start: var(--s5); color: var(--green); font-size: .92rem; }
.status:empty { display: none; }
.status.error { color: var(--red); }
.footnote { color: var(--muted); font-size: .83rem; line-height: 1.65; margin-block-start: var(--s6); padding-block-start: var(--s5); border-top: 1px solid var(--line); max-inline-size: 78ch; }

.hidden { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Entrance ---- */
.panel { animation: rise .4s cubic-bezier(.22, 1, .36, 1) both; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

@media (max-width: 760px) {
  .shell { padding: var(--s5) var(--s4) var(--s7); }
  .layout { grid-template-columns: 1fr; }
  .device-panel { order: 0; }
  .detail-panel { order: 1; min-block-size: 0; }
  .account-row { align-items: flex-start; flex-direction: column; gap: var(--s3); }
  .actions .button { flex: 1; }
  .cat-tabs { flex-wrap: nowrap; overflow-x: auto; margin-inline: calc(-1 * var(--s5)); padding-inline: var(--s5); scrollbar-width: none; }
  .cat-tabs::-webkit-scrollbar { display: none; }
  .cat-tab { flex: none; }
  .list-toolbar { flex-direction: column; align-items: stretch; gap: var(--s2); }
  .result-count { text-align: start; }
  .pager-btn { flex: 1; }
}