:root {
  --bg: #0b1120;
  --bg-soft: #111a2e;
  --card: #151f36;
  --card-2: #1b2745;
  --line: #26324f;
  --text: #e8edf7;
  --muted: #8f9dbb;
  --ok: #22c55e;
  --bad: #ef4444;
  --warn: #f59e0b;
  --unknown: #64748b;
  --accent: #3b82f6;
  --radius: 14px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fb;
    --bg-soft: #ffffff;
    --card: #ffffff;
    --card-2: #f0f3fa;
    --line: #dde3ef;
    --text: #101828;
    --muted: #5b6779;
    --accent: #2563eb;
    color-scheme: light;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom)
    env(safe-area-inset-left);
}

.hidden {
  display: none !important;
}

.view {
  max-width: 780px;
  margin: 0 auto;
  padding: 16px 16px 48px;
}

.centered {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.error {
  color: var(--bad);
  font-size: 13px;
  margin: 8px 0 0;
}

/* ------------------------------------------------------------------ login */

.logo {
  font-size: 34px;
  color: var(--accent);
  line-height: 1;
}

.logo.small {
  font-size: 18px;
}

.login-card {
  width: 100%;
  max-width: 340px;
  text-align: center;
}

.login-card h1 {
  margin: 8px 0 4px;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.login-card p {
  font-size: 13px;
  margin: 0 0 18px;
}

/* ------------------------------------------------------------------ shell */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 650;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.topbar-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.banner {
  background: color-mix(in srgb, var(--warn) 16%, var(--card));
  border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  color: var(--text);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 14px;
}

.banner.good {
  background: color-mix(in srgb, var(--ok) 14%, var(--card));
  border-color: color-mix(in srgb, var(--ok) 40%, transparent);
}

.banner.bad {
  background: color-mix(in srgb, var(--bad) 14%, var(--card));
  border-color: color-mix(in srgb, var(--bad) 40%, transparent);
}

/* ----------------------------------------------------------------- pieces */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 14px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 8px;
  text-align: center;
}

.stat span {
  display: block;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
}

.stat small {
  color: var(--muted);
  font-size: 11px;
}

.stat.ok span {
  color: var(--ok);
}

.stat.bad span {
  color: var(--bad);
}

.rhythm {
  padding: 12px 16px;
}

.rhythm-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  font-size: 13px;
  margin-bottom: 8px;
}

.rhythm-bar {
  height: 4px;
  border-radius: 99px;
  background: var(--card-2);
  overflow: hidden;
}

.rhythm-bar > div {
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.9s linear;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 22px 0 10px;
}

.list-header h2,
.card h2 {
  font-size: 15px;
  margin: 0 0 2px;
  letter-spacing: 0.01em;
}

.card h2 {
  margin-bottom: 14px;
}

/* --------------------------------------------------------------- controls */

button {
  font: inherit;
  cursor: pointer;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 9px 14px;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}

button.primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  width: 100%;
}

button.primary.small {
  width: auto;
  padding: 7px 12px;
  font-size: 13px;
}

button.ghost {
  background: var(--card-2);
  border-color: var(--line);
  color: var(--text);
  font-size: 13px;
}

button.ghost:hover {
  border-color: var(--accent);
}

button.ghost.icon {
  padding: 8px 10px;
}

button.ghost.active {
  border-color: var(--ok);
  color: var(--ok);
}

button.danger {
  background: transparent;
  border-color: color-mix(in srgb, var(--bad) 45%, transparent);
  color: var(--bad);
  font-size: 13px;
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

input,
select {
  font: inherit;
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent);
}

input[type="range"] {
  padding: 0;
  accent-color: var(--accent);
  background: transparent;
  border: none;
}

.field {
  display: block;
  margin-bottom: 14px;
}

.field > span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.field > span em {
  font-style: normal;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
  font-weight: 600;
}

.field small {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.45;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 12px;
}

.grid .wide {
  grid-column: 1 / -1;
}

.checkbox {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 13px;
  margin-bottom: 10px;
}

.checkbox input {
  width: auto;
  margin-top: 2px;
  accent-color: var(--accent);
}

.quick-picks {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: -4px 0 16px;
}

.quick-picks button {
  background: var(--card-2);
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 99px;
}

.quick-picks button.active {
  border-color: var(--accent);
  color: var(--text);
}

.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.form-actions .primary {
  flex: 2;
}

.form-actions .ghost {
  flex: 1;
}

.settings-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.diag {
  margin: 4px 0 0;
  font-size: 12px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
}

.diag dt {
  color: var(--muted);
  white-space: nowrap;
}

.diag dd {
  margin: 0;
  word-break: break-word;
}

.diag dd.bad {
  color: var(--bad);
}

.diag dd.good {
  color: var(--ok);
}

details summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}

/* --------------------------------------------------------------- services */

.target {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
}

.target.down {
  border-color: color-mix(in srgb, var(--bad) 55%, transparent);
  background: color-mix(in srgb, var(--bad) 7%, var(--card));
}

.target.disabled {
  opacity: 0.55;
}

.target-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 99px;
  flex: none;
  background: var(--unknown);
}

.dot.up {
  background: var(--ok);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent);
}

.dot.down {
  background: var(--bad);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--bad) 22%, transparent);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  50% {
    box-shadow: 0 0 0 7px color-mix(in srgb, var(--bad) 5%, transparent);
  }
}

.target-title {
  flex: 1;
  min-width: 0;
}

.target-title strong {
  display: block;
  font-size: 15px;
  font-weight: 620;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.target-title span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.target-meta {
  text-align: right;
  font-size: 12px;
  color: var(--muted);
  flex: none;
}

.target-meta b {
  display: block;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

.target.down .target-meta b {
  color: var(--bad);
}

.spark {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  height: 22px;
  margin-top: 12px;
}

.spark i {
  flex: 1 1 auto;
  min-width: 2px;
  /* Bei wenigen Messpunkten sollen schmale Balken entstehen, kein Fortschrittsbalken. */
  max-width: 9px;
  border-radius: 2px;
  background: var(--ok);
  opacity: 0.75;
}

.spark i.bad {
  background: var(--bad);
  opacity: 1;
}

.target-error {
  margin-top: 10px;
  font-size: 12px;
  color: var(--bad);
  word-break: break-word;
}

.target-actions {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.target-actions button {
  font-size: 12px;
  padding: 6px 10px;
}

.empty {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  padding: 32px 0;
  line-height: 1.7;
}

.foot {
  margin-top: 28px;
  font-size: 11px;
  text-align: center;
}

@media (max-width: 520px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .summary {
    grid-template-columns: repeat(2, 1fr);
  }
}