:root {
  --ink: #0e2430;
  --ink-soft: #3a5563;
  --line: #c5d4dc;
  --paper: #f3f7f9;
  --panel: rgba(255, 255, 255, 0.78);
  --brand: #0a6e7a;
  --brand-deep: #084e57;
  --accent: #c4782b;
  --ok: #1f7a4d;
  --warn: #9a6b12;
  --bad: #a33b32;
  --pending: #4a6680;
  --shadow: 0 18px 50px rgba(14, 36, 48, 0.08);
  --radius: 14px;
  --font: "Outfit", system-ui, sans-serif;
  --display: "Source Serif 4", Georgia, serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(10, 110, 122, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(196, 120, 43, 0.12), transparent 50%),
    linear-gradient(180deg, #e8f1f4 0%, var(--paper) 45%, #eef3f5 100%);
  background-attachment: fixed;
}

a { color: var(--brand-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; }
button {
  cursor: pointer;
  border: none;
  border-radius: 10px;
  padding: 0.65rem 1rem;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  transition: transform 120ms ease, background 120ms ease, opacity 120ms ease;
}
button:hover { background: var(--brand-deep); }
button:active { transform: translateY(1px); }
button.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
button.secondary:hover { background: rgba(14, 36, 48, 0.04); }
button.danger { background: var(--bad); }
button:disabled { opacity: 0.55; cursor: not-allowed; }
input, select, textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(10, 110, 122, 0.28);
  border-color: var(--brand);
}
label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}
.field { margin-bottom: 0.95rem; }
.hint { color: var(--ink-soft); font-size: 0.9rem; }
.err {
  color: var(--bad);
  background: rgba(163, 59, 50, 0.08);
  border: 1px solid rgba(163, 59, 50, 0.2);
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  margin: 0.75rem 0;
}
.okmsg {
  color: var(--ok);
  background: rgba(31, 122, 77, 0.08);
  border: 1px solid rgba(31, 122, 77, 0.2);
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  margin: 0.75rem 0;
}

/* Login */
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}
.login-panel {
  width: min(420px, 100%);
  padding: 2.25rem 2rem 2rem;
  background: var(--panel);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(197, 212, 220, 0.9);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  animation: rise 420ms ease both;
}
.brand-mark {
  font-family: var(--display);
  font-size: clamp(2.1rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--brand-deep);
  margin: 0 0 0.35rem;
}
.login-panel .tagline {
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
}

/* App shell */
.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 240px 1fr;
}
.nav {
  padding: 1.5rem 1rem 1.25rem;
  border-right: 1px solid rgba(197, 212, 220, 0.85);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.nav .brand-mark {
  font-size: 1.55rem;
  margin: 0 0.4rem 1.1rem;
}
.nav a.nav-link {
  display: block;
  padding: 0.65rem 0.8rem;
  border-radius: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
}
.nav a.nav-link:hover { background: rgba(10, 110, 122, 0.08); text-decoration: none; }
.nav a.nav-link.active {
  background: rgba(10, 110, 122, 0.14);
  color: var(--brand-deep);
  font-weight: 600;
}
.nav-foot {
  margin-top: auto;
  padding: 0.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.main {
  padding: 1.5rem 1.75rem 2.5rem;
  animation: rise 320ms ease both;
}
.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-head h1 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3vw, 2.1rem);
  margin: 0;
  letter-spacing: -0.02em;
}
.page-head p { margin: 0.25rem 0 0; color: var(--ink-soft); }
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 1rem;
}
.toolbar input, .toolbar select { width: auto; min-width: 10rem; }

.panel {
  background: var(--panel);
  border: 1px solid rgba(197, 212, 220, 0.9);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 1rem; }
.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}
.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 0.75rem;
}
.panel-head h2 { margin: 0; }
.panel-head .hint { margin: 0; }
.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}
.web-link {
  color: var(--accent, #0b6e4f);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.85rem;
}
.web-link:hover { text-decoration: underline; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.7rem 0.45rem;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
table.data th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  font-weight: 600;
}
table.data tr { cursor: pointer; transition: background 120ms ease; }
table.data tbody tr:hover { background: rgba(10, 110, 122, 0.05); }
table.data tr.no-click { cursor: default; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.88rem;
}
.status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--pending);
}
.status.online::before { background: var(--ok); }
.status.offline::before { background: var(--bad); }
.status.pending_claim::before,
.status.pending::before { background: var(--warn); }

.kv {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0.45rem 1rem;
  font-size: 0.95rem;
}
.kv dt { color: var(--ink-soft); margin: 0; }
.kv dd { margin: 0; font-weight: 500; word-break: break-word; }

.claim-box {
  margin-top: 0.75rem;
  padding: 1rem;
  border-radius: 12px;
  background: rgba(10, 110, 122, 0.08);
  border: 1px dashed rgba(10, 110, 122, 0.35);
}
.claim-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand-deep);
}

.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .nav {
    border-right: none;
    border-bottom: 1px solid var(--line);
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .nav .brand-mark { width: 100%; margin-bottom: 0.4rem; }
  .nav-foot { width: 100%; margin-top: 0.4rem; }
  .grid-2 { grid-template-columns: 1fr; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.empty {
  padding: 1.5rem 0.5rem;
  color: var(--ink-soft);
  text-align: center;
}
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.muted { color: var(--ink-soft); }
.row-actions { display: flex; gap: 0.4rem; }
.dialog-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(14, 36, 48, 0.35);
  display: grid;
  place-items: center;
  padding: 1rem;
  z-index: 40;
  animation: rise 180ms ease both;
}
.dialog {
  width: min(480px, 100%);
  background: #fff;
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1rem;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.dialog h3 { margin: 0 0 0.75rem; font-family: var(--display); }