:root {
  --bg: #eef3f8;
  --panel: #ffffff;
  --ink: #162033;
  --muted: #647084;
  --line: #d7deea;
  --blue: #2563eb;
  --green: #16855b;
  --red: #c73636;
  --yellow: #d98b13;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--blue);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

button.secondary {
  background: #e7ecf5;
  color: var(--ink);
}

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

button:disabled {
  opacity: .55;
  cursor: not-allowed;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 420px);
  display: grid;
  gap: 14px;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 18px 44px rgba(22, 32, 51, .12);
}

.login-card h1,
.top h1 {
  margin: 0;
}

.login-card p,
.top p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.shell {
  min-height: 100vh;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 22px clamp(16px, 4vw, 38px);
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.top-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.content {
  padding: 18px clamp(16px, 4vw, 38px) 36px;
  display: grid;
  gap: 18px;
}

.alert {
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid #f2d29a;
  background: #fff6e5;
  color: #6b4205;
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 10px 26px rgba(22, 32, 51, .06);
}

.span-4 {
  grid-column: span 4;
}

.span-5 {
  grid-column: span 5;
}

.span-7 {
  grid-column: span 7;
}

.span-8 {
  grid-column: span 8;
}

.span-12 {
  grid-column: span 12;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.form {
  display: grid;
  gap: 12px;
}

.row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.list {
  display: grid;
  gap: 10px;
}

.item {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcff;
}

.item-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}

.item h3 {
  margin: 0;
  font-size: 16px;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  background: #e7ecf5;
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

.pill.online {
  background: #daf5e9;
  color: var(--green);
}

.pill.offline {
  background: #f8e0e0;
  color: var(--red);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.viewer {
  width: 100%;
  min-height: 460px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101827;
  color: #cbd5e1;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.viewer iframe {
  width: 100%;
  height: 560px;
  border: 0;
  background: #000;
}

.events {
  max-height: 460px;
  overflow: auto;
}

.error {
  color: var(--red);
  font-weight: 800;
}

.ok {
  color: var(--green);
  font-weight: 800;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .span-4,
  .span-5,
  .span-7,
  .span-8,
  .span-12 {
    grid-column: auto;
  }

  .row {
    grid-template-columns: 1fr;
  }

  .top {
    align-items: stretch;
    flex-direction: column;
  }
}