:root {
  --navy: #0a2540;
  --navy-light: #1b3a5c;
  --navy-dark: #061628;
  --cream: #f5ede0;
  --brass: #c9a063;
  --brass-light: #e0c188;
  --brass-dark: #8b6a3a;
  --danger: #b22222;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, 'Palatino Linotype', 'Times New Roman', serif;
  color: var(--cream);
  background:
    radial-gradient(ellipse at top, #143356 0%, var(--navy) 55%, var(--navy-dark) 100%);
  background-attachment: fixed;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2em 1em 3em;
}

/* Title plaque */
.plaque {
  text-align: center;
  padding: 1em 0.5em 1.2em;
  border-bottom: 3px double var(--brass);
  margin-bottom: 1.5em;
}

.plaque h1 {
  margin: 0.3em 0 0;
  font-size: 2.2em;
  letter-spacing: 0.08em;
  color: var(--brass);
  text-shadow: 0 1px 0 #000, 0 0 16px rgba(201, 160, 99, 0.3);
}

.plaque .subtitle {
  font-style: italic;
  color: var(--cream);
  opacity: 0.75;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-size: 0.8em;
  margin-top: 0.2em;
}

.anchor {
  width: 52px;
  height: 52px;
  color: var(--brass);
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.6));
}

/* Brass-riveted panels */
.panel {
  position: relative;
  background: linear-gradient(180deg, #153355 0%, #0e2843 100%);
  border: 2px solid var(--brass);
  border-radius: 10px;
  padding: 1.8em 1.5em 1.5em;
  margin: 1.2em 0;
  box-shadow:
    inset 0 0 0 4px var(--navy-light),
    inset 0 0 0 5px var(--brass-dark),
    0 4px 14px rgba(0, 0, 0, 0.5);
}

.panel::before,
.panel::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--brass-light), var(--brass-dark));
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.7), inset 0 0 1px rgba(0, 0, 0, 0.6);
}
.panel::before { top: 12px; left: 12px; }
.panel::after  { top: 12px; right: 12px; }

.panel h2 {
  margin: 0 0 0.8em;
  color: var(--brass);
  font-size: 1.2em;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-align: center;
  border-bottom: 1px solid rgba(201, 160, 99, 0.3);
  padding-bottom: 0.4em;
}

/* Gauge */
.gauge-wrap {
  max-width: 340px;
  margin: 0 auto 1.2em;
  background: radial-gradient(ellipse at center, #1d4370 0%, var(--navy) 80%);
  border: 4px solid var(--brass-dark);
  border-radius: 50% / 20%;
  padding: 0.6em 1em 0.4em;
  box-shadow:
    inset 0 0 14px rgba(0, 0, 0, 0.7),
    0 2px 6px rgba(0, 0, 0, 0.5);
}
.gauge { width: 100%; height: auto; display: block; }
.gauge-arc {
  fill: none;
  stroke: var(--brass);
  stroke-width: 3;
  stroke-linecap: round;
}
.gauge-ticks line {
  stroke: var(--cream);
  stroke-width: 2;
  stroke-linecap: round;
}
.gauge-labels text {
  fill: var(--cream);
  font-size: 11px;
  font-family: Georgia, serif;
}
.gauge-needle {
  stroke: var(--danger);
  stroke-width: 3;
  stroke-linecap: round;
  transition: transform 0.9s cubic-bezier(0.3, 0.8, 0.4, 1);
  filter: drop-shadow(0 0 3px rgba(178, 34, 34, 0.5));
}
.gauge-pivot {
  fill: var(--brass);
  stroke: #000;
  stroke-width: 1;
}

/* Readout */
.readout {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.3em 1.2em;
  margin: 0 auto 1em;
  max-width: 340px;
}
.readout dt {
  font-weight: bold;
  color: var(--brass);
  letter-spacing: 0.05em;
}
.readout dd { margin: 0; }

/* Buttons */
button {
  font-family: inherit;
  font-size: 1em;
  color: var(--cream);
  background: linear-gradient(180deg, #1e4674 0%, #0d2644 100%);
  border: 2px solid var(--brass);
  border-radius: 6px;
  padding: 0.55em 1.2em;
  cursor: pointer;
  letter-spacing: 0.05em;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transition: transform 0.05s ease, background 0.2s ease;
}
button:hover:not(:disabled) {
  background: linear-gradient(180deg, #2a5990 0%, #143356 100%);
}
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.45; cursor: not-allowed; }

#refresh { display: block; margin: 0 auto; }

/* Engine orders */
.orders {
  display: flex;
  gap: 1em;
  justify-content: center;
  margin-bottom: 1em;
  flex-wrap: wrap;
}
.order {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 160px;
  padding: 0.9em 1em;
  background: linear-gradient(180deg, #254a76 0%, #0a2540 100%);
}
.order .label {
  font-size: 1.15em;
  font-weight: bold;
  color: var(--brass);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.order .mbps {
  font-size: 0.85em;
  opacity: 0.75;
  margin-top: 0.25em;
}

/* Custom */
.custom-order {
  display: flex;
  gap: 0.6em;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.8em;
  padding-top: 1em;
  border-top: 1px dashed rgba(201, 160, 99, 0.3);
}
.custom-order label { color: var(--cream); }
.custom-order input {
  width: 7em;
  font: inherit;
  padding: 0.4em 0.5em;
  background: var(--navy-dark);
  color: var(--cream);
  border: 1px solid var(--brass);
  border-radius: 4px;
}

#message {
  margin-top: 1.2em;
  min-height: 1.5em;
  text-align: center;
  font-style: italic;
  color: var(--brass-light);
}

/* Sign-in panel */
#signin {
  text-align: center;
}
#signin p {
  color: var(--cream);
  margin: 0 0 1.2em;
}
#signin-button {
  display: inline-block;
}

.signed-in-as {
  margin-top: 1.5em;
  padding-top: 0.8em;
  border-top: 1px dashed rgba(201, 160, 99, 0.3);
  text-align: center;
  font-size: 0.9em;
  color: var(--cream);
  opacity: 0.8;
}
.signed-in-as #user-email {
  color: var(--brass);
  font-weight: bold;
}
.signed-in-as button {
  margin-left: 0.6em;
  padding: 0.3em 0.8em;
  font-size: 0.9em;
}

/* Spinner shown in the Status/Bandwidth readouts while loading */
.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid rgba(201, 160, 99, 0.3);
  border-top-color: var(--brass);
  border-radius: 50%;
  box-sizing: border-box;
  animation: spin 0.8s linear infinite;
  vertical-align: -0.15em;
}

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