:root {
  --cyan: #08add0;
  --cyan-dark: #007f9c;
  --green: #55ad00;
  --graphite: #505256;
  --ink: #20262a;
  --muted: #6c767b;
  --canvas: #f7fafb;
  --line: #dce5e8;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--canvas);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 14%, rgba(8, 173, 208, 0.06), transparent 29rem),
    var(--canvas);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

button {
  font: inherit;
}

.maintenance {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  min-height: 100vh;
}

.message {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(40px, 7vw, 112px);
}

.logo {
  display: block;
  width: 214px;
  height: auto;
  margin: 0 0 clamp(44px, 8vh, 84px) -11px;
  clip-path: inset(12% 5% 12% 5%);
  mix-blend-mode: multiply;
  transform: scale(1.12);
  transform-origin: left center;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  color: var(--graphite);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
}

.status__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(85, 173, 0, 0.12);
  animation: breathe 2.4s ease-in-out infinite;
}

h1 {
  max-width: 790px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(42px, 5.7vw, 86px);
  font-weight: 760;
  letter-spacing: -0.055em;
  line-height: 0.96;
  text-wrap: balance;
}

.lead {
  max-width: 590px;
  margin: 32px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.58;
  text-wrap: pretty;
}

.refresh {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-height: 52px;
  margin-top: 38px;
  padding: 0;
  border: 0;
  border-bottom: 2px solid var(--cyan);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  font-weight: 700;
  transition: color 180ms ease, border-color 180ms ease;
}

.refresh svg {
  width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  transition: transform 320ms ease;
}

.refresh:hover {
  color: var(--cyan-dark);
  border-color: var(--green);
}

.refresh:hover svg {
  transform: rotate(90deg);
}

.refresh:focus-visible {
  outline: 3px solid rgba(8, 173, 208, 0.3);
  outline-offset: 8px;
}

.signal {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  background: #eaf1f3;
  isolation: isolate;
}

.signal::before {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.74), transparent 42%),
    linear-gradient(155deg, transparent 47%, rgba(8, 173, 208, 0.09) 47.2%, transparent 47.6%);
  content: "";
}

.signal__grid {
  position: absolute;
  inset: 0;
  opacity: 0.48;
  background-image:
    linear-gradient(rgba(80, 82, 86, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 82, 86, 0.09) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom right, transparent 5%, black 55%, transparent 100%);
}

.signal__rail {
  position: absolute;
  left: 50%;
  width: 124px;
  height: 72vh;
  min-height: 560px;
  border-radius: 4px 4px 62px 62px;
  box-shadow: 0 35px 58px rgba(35, 55, 60, 0.16);
  transform-origin: center;
}

.signal__rail--cyan {
  top: -11%;
  margin-left: -95px;
  background: linear-gradient(180deg, #10b8d7 0 66%, #048cac 100%);
  transform: rotate(-15deg);
}

.signal__rail--green {
  right: -55px;
  bottom: -22%;
  left: auto;
  background: linear-gradient(180deg, #69c400, #4ca200);
  transform: rotate(53deg);
}

.signal__node {
  position: absolute;
  width: 13px;
  height: 13px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: var(--graphite);
  box-shadow: 0 0 0 1px rgba(32, 38, 42, 0.15), 0 8px 20px rgba(32, 38, 42, 0.2);
}

.signal__node::after {
  position: absolute;
  top: 3px;
  left: 16px;
  width: 88px;
  height: 1px;
  background: rgba(80, 82, 86, 0.48);
  content: "";
}

.signal__node--one {
  top: 27%;
  left: 24%;
}

.signal__node--two {
  top: 52%;
  right: 19%;
  background: var(--green);
}

.signal__node--two::after {
  right: 16px;
  left: auto;
}

.signal__node--three {
  bottom: 17%;
  left: 17%;
  background: var(--cyan);
}

.signal__label {
  position: absolute;
  right: 38px;
  bottom: 34px;
  margin: 0;
  color: rgba(80, 82, 86, 0.58);
  font: 700 10px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.18em;
  text-align: right;
}

@keyframes breathe {
  50% {
    box-shadow: 0 0 0 8px rgba(85, 173, 0, 0.04);
  }
}

@media (max-width: 850px) {
  .maintenance {
    grid-template-columns: 1fr;
  }

  .message {
    min-height: 68vh;
    padding: 44px clamp(24px, 7vw, 64px) 56px;
  }

  .logo {
    width: 180px;
    margin-bottom: 46px;
  }

  .signal {
    min-height: 32vh;
  }

  .signal__rail {
    width: 88px;
    height: 480px;
    min-height: 0;
  }

  .signal__rail--cyan {
    top: -80%;
    margin-left: -70px;
  }

  .signal__rail--green {
    right: 5%;
    bottom: -130%;
  }
}

@media (max-width: 460px) {
  h1 {
    font-size: clamp(38px, 12vw, 54px);
  }

  .lead {
    margin-top: 24px;
  }

  .refresh {
    margin-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}