:root {
  color-scheme: dark;
  --bg-start: #0f172a;
  --bg-end: #1e1b4b;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.25);
  --card-bg: rgba(15, 23, 42, 0.65);
  --text-primary: #f1f5f9;
  --text-muted: #94a3b8;
  --success: #22d3ee;
  --danger: #f43f5e;
  --warning: #facc15;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: 'Poppins', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(120% 180% at 10% 10%, rgba(56, 189, 248, 0.15), transparent 60%),
    linear-gradient(140deg, var(--bg-start) 0%, var(--bg-end) 100%);
  color: var(--text-primary);
  overflow-x: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem;
}

.background {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  filter: blur(0);
  background: radial-gradient(circle, rgba(56, 189, 248, 0.45) 0%, transparent 70%);
  opacity: 0.4;
  mix-blend-mode: screen;
  animation: pulse 12s ease-in-out infinite;
}

.orbit--one {
  width: 36rem;
  height: 36rem;
  top: -12rem;
  left: -8rem;
}

.orbit--two {
  width: 26rem;
  height: 26rem;
  bottom: -10rem;
  right: -6rem;
  animation-delay: 2s;
}

.orbit--three {
  width: 18rem;
  height: 18rem;
  top: 30vh;
  right: 10vw;
  animation-delay: 4s;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(0.9);
    opacity: 0.35;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.5;
  }
}

.app-shell {
  position: relative;
  width: min(960px, 100%);
  z-index: 1;
  display: grid;
  gap: 2rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}

h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  margin: 0;
  line-height: 1;
}

.primary-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2.75rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(120deg, rgba(56, 189, 248, 0.95), rgba(14, 165, 233, 0.95));
  color: #0f172a;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.primary-button:focus-visible {
  outline: 2px solid rgba(148, 163, 184, 0.65);
  outline-offset: 4px;
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(56, 189, 248, 0.35);
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.75;
}

.button-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.45), transparent 65%);
  opacity: 0;
  transition: opacity 0.6s ease;
}

.primary-button:hover .button-glow {
  opacity: 1;
}

.dashboard {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.gauge-card {
  grid-column: span 2;
  min-height: 340px;
  padding: 1.5rem;
  border-radius: 24px;
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(148, 163, 184, 0.08);
  position: relative;
  overflow: hidden;
}

.gauge-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(56, 189, 248, 0.08), transparent 65%);
  pointer-events: none;
}

.gauge {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.gauge__label {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.gauge__dial {
  position: relative;
  width: min(280px, 70vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 15%, rgba(255, 255, 255, 0.25), transparent 50%),
    conic-gradient(from 225deg, rgba(56, 189, 248, 0.85) 0deg, rgba(14, 165, 233, 0.75) 200deg, rgba(14, 165, 233, 0.1) 360deg);
  border: 1px solid rgba(148, 163, 184, 0.1);
  box-shadow: inset 0 -25px 50px rgba(2, 6, 23, 0.55);
  display: grid;
  place-items: center;
}

.gauge__dial::after {
  content: '';
  position: absolute;
  inset: calc(50% - 2px) 12%;
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.15);
}

.gauge__needle {
  position: absolute;
  width: 6px;
  height: 45%;
  top: 50%;
  left: 50%;
  transform-origin: 50% 90%;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.9), rgba(56, 189, 248, 0.2));
  box-shadow: 0 8px 16px rgba(56, 189, 248, 0.3);
  transform: rotate(-120deg);
  transition: transform 0.9s cubic-bezier(0.19, 1, 0.22, 1);
}

.gauge__needle::after {
  content: '';
  position: absolute;
  bottom: -14px;
  left: 50%;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(120deg, rgba(56, 189, 248, 0.8), rgba(14, 165, 233, 0.6));
  border: 2px solid rgba(15, 23, 42, 0.45);
  transform: translateX(-50%);
}

.gauge__value {
  position: relative;
  font-size: clamp(2.75rem, 6vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  text-shadow: 0 10px 40px rgba(15, 23, 42, 0.45);
}

.gauge__unit {
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.metric-card,
.timeline-card {
  position: relative;
  padding: 1.5rem;
  border-radius: 20px;
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(148, 163, 184, 0.08);
  overflow: hidden;
}

.metric-card::before,
.timeline-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.12), transparent 55%);
  pointer-events: none;
}

.metric-card h2,
.timeline-card h2 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.metric-value {
  margin: 1.2rem 0 0;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 600;
}

.metric-unit {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-feed {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.status-feed__item {
  position: relative;
  padding-left: 1.75rem;
  line-height: 1.4;
  animation: fade-in-up 0.6s ease;
}

.status-feed__item::before {
  content: '';
  position: absolute;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  left: 0;
  top: 0.4rem;
  background: linear-gradient(120deg, var(--accent), rgba(14, 165, 233, 0.65));
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.15);
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-primary);
  font-size: 0.95rem;
  box-shadow: 0 20px 40px rgba(2, 6, 23, 0.45);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
  min-width: 220px;
  text-align: center;
  z-index: 5;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .gauge-card {
    grid-column: span 1;
  }
}