:root {
  --bg: #f3f1ec;
  --ink: #1a1a1a;
  --muted: #6b6b66;
  --line: #d8d3c8;
  --card: #fffdf8;
  --accent: #b8492a;
  --accent-soft: #f1d8cc;
  --ok: #2d7a3f;
  --warn: #b08000;
  --bad: #b8492a;
  --shadow: 0 1px 0 rgba(0,0,0,0.04), 0 4px 24px rgba(40,30,20,0.06);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.5;
}

/* ---------- Login ---------- */
.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: min(360px, 100%);
  box-shadow: var(--shadow);
}
.login-card h1 {
  margin: 0 0 1.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.login-card label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1rem;
}
.login-card input[type=password],
.login-card input[type=text] {
  display: block;
  width: 100%;
  margin-top: 0.4rem;
  padding: 0.7rem 0.85rem;
  font-size: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
.login-card input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}
.login-card .error {
  color: var(--bad);
  font-size: 0.9rem;
  margin: 0 0 1rem;
}
.login-card button {
  display: block;
  width: 100%;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--ink);
  color: white;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
}
.login-card button:hover { background: #000; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
@media (min-width: 700px) {
  .topbar { padding: 1.4rem 2rem; }
}
.topbar h1 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}
.topbar .logout { margin: 0; }
.topbar button.link {
  border: none;
  background: none;
  color: var(--muted);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0;
}
.topbar button.link:hover { color: var(--ink); }

/* ---------- Layout ---------- */
main {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 700px) {
  main { padding: 2.5rem 2rem 5rem; gap: 1.75rem; }
}

/* ---------- Card ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.1rem;
  box-shadow: var(--shadow);
}
@media (min-width: 700px) {
  .card { padding: 1.5rem 1.5rem 1.25rem; }
}
.card > header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}
.card h2 {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.card-icon {
  width: 24px;
  height: 24px;
  fill: var(--ink);
  flex-shrink: 0;
  stroke: var(--ink);
  stroke-width: 0;
}
.card .sub {
  font-size: 0.78rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.card .refresh {
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 6px;
  width: 28px;
  height: 28px;
  font-size: 1rem;
  cursor: pointer;
  color: var(--muted);
}
.card .refresh:hover { color: var(--ink); border-color: var(--ink); }
.msg {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  min-height: 1.1rem;
}
.msg.ok { color: var(--ok); }
.msg.err { color: var(--bad); }

/* ---------- Phone ---------- */
.phone-state {
  display: grid;
  gap: 1rem;
}
@media (min-width: 600px) {
  .phone-state {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}
.phone-current { display: flex; flex-direction: column; gap: 0.15rem; }
.phone-current .label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.phone-current .value {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.phone-toggle {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: white;
}
@media (min-width: 600px) {
  .phone-toggle { display: inline-flex; }
}
.phone-toggle button {
  border: none;
  background: transparent;
  padding: 0.75rem 0.95rem;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--muted);
  border-right: 1px solid var(--line);
  font-weight: 500;
  flex: 1;
}
@media (min-width: 600px) {
  .phone-toggle button { padding: 0.55rem 1.1rem; font-size: 0.9rem; flex: 0 0 auto; }
}
.phone-toggle button:last-child { border-right: none; }
.phone-toggle button:hover:not([disabled]) { background: #fbf6ee; color: var(--ink); }
.phone-toggle button.active {
  background: var(--ink);
  color: white;
  cursor: default;
}
.phone-toggle button[disabled] { opacity: 0.5; cursor: wait; }

/* ---------- Locks ---------- */
.shortcuts {
  display: grid;
  grid-template-columns: max-content 1fr 1fr;
  gap: 0.5rem 0.75rem;
  align-items: center;
  margin-bottom: 0.6rem;
}
.shortcut-label {
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--ink);
  padding-right: 0.4rem;
}
.shortcuts button {
  border: 1px solid var(--line);
  background: white;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  width: 100%;
}
.shortcuts button:hover:not([disabled]) { border-color: var(--ink); }
.shortcuts button.primary {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}
.shortcuts button.primary:hover:not([disabled]) { background: #000; }
.shortcuts button[disabled] { opacity: 0.4; cursor: wait; }
.hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0 0 1.1rem;
}

@media (max-width: 480px) {
  .shortcuts {
    grid-template-columns: 1fr 1fr;
    column-gap: 0.6rem;
    row-gap: 0.4rem;
  }
  .shortcut-label {
    grid-column: 1 / -1;
    font-size: 0.85rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 0.5rem;
    padding: 0;
  }
  .shortcut-label:first-child { margin-top: 0; }
}

.lock-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.lock-list li {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  grid-template-areas: "info badge battery actions";
  align-items: center;
  gap: 0.5rem 1.1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.lock-list li:last-child { border-bottom: none; }
.lock-list li.placeholder {
  grid-template-columns: 1fr;
  grid-template-areas: "info";
  color: var(--muted);
  font-style: italic;
}

.lock-info {
  grid-area: info;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}
.lock-name {
  font-weight: 500;
  font-size: 0.98rem;
  letter-spacing: -0.005em;
}
.lock-last {
  font-size: 0.78rem;
  color: var(--muted);
}
.lock-offline {
  font-size: 0.72rem;
  color: var(--bad);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* ---------- Status badge ---------- */
.badge {
  grid-area: badge;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem 0.28rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  border: 1px solid transparent;
  min-width: 7.5rem;
  justify-content: center;
}
.badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.badge.unlocked {
  color: #1c5a2c;
  background: #dceedb;
  border-color: #b7d8b6;
}
.badge.locked {
  color: #8a2418;
  background: #fadcd5;
  border-color: #ecb6a9;
}
.badge.unknown,
.badge.partial {
  color: #6d5300;
  background: #f7e8c0;
  border-color: #e0c984;
}

/* ---------- Battery ---------- */
.battery {
  grid-area: battery;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  color: var(--muted);
  min-width: 38px;
  font-variant-numeric: tabular-nums;
}
.battery-icon {
  position: relative;
  display: block;
  width: 28px;
  height: 13px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
  padding: 1px;
  box-sizing: border-box;
}
.battery-icon::after {
  content: '';
  position: absolute;
  right: -4px;
  top: 50%;
  transform: translateY(-50%);
  width: 2.5px;
  height: 6px;
  background: currentColor;
  border-radius: 0 1.5px 1.5px 0;
}
.battery-fill {
  display: block;
  height: 100%;
  background: currentColor;
  border-radius: 1px;
}
.battery-pct {
  font-size: 0.78rem;
  font-weight: 500;
}
.battery.low { color: var(--bad); }

/* ---------- Action button ---------- */
.lock-actions {
  grid-area: actions;
  display: flex;
  gap: 0.4rem;
  flex-wrap: nowrap;
}
.lock-actions button {
  border: 1px solid var(--line);
  background: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink);
  min-width: 5.5rem;
  flex: 0 0 auto;
}
.lock-actions button:hover:not([disabled]) { border-color: var(--ink); }
.lock-actions button[disabled] { opacity: 0.35; cursor: not-allowed; background: white; color: var(--muted); border-color: var(--line); }
.lock-actions button.primary { background: var(--ink); color: white; border-color: var(--ink); }
.lock-actions button.primary:hover:not([disabled]) { background: #000; }

/* ---------- Mobile ---------- */
@media (max-width: 600px) {
  .lock-list li {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "info     battery"
      "badge    battery"
      "actions  actions";
    gap: 0.6rem 1rem;
    padding: 1.1rem 0;
  }
  .battery { align-self: start; padding-top: 0.2rem; }
  .lock-actions { justify-self: stretch; width: 100%; }
  .lock-actions button { flex: 1; padding: 0.7rem; font-size: 0.95rem; min-width: 0; }
  .badge { justify-self: start; min-width: 0; }
}