@font-face {
  font-family: "berkeley-mono-variable";
  src: url("/fonts/berkeley-mono-variable.woff2") format("woff2");
}

:root {
  --zinc-50: oklch(98.5% 0 0);
  --zinc-100: oklch(96.7% 0.001 286.375);
  --zinc-200: oklch(92% 0.004 286.32);
  --zinc-300: oklch(87.1% 0.006 286.286);
  --zinc-400: oklch(70.5% 0.015 286.067);
  --zinc-500: oklch(55.2% 0.016 285.938);
  --zinc-700: oklch(37% 0.013 285.805);
  --zinc-900: oklch(21% 0.006 285.885);
  --red-500: oklch(63.7% 0.237 25.331);
  --radius: 0.5rem;
  --shadow: 0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;
}

/* Reset */
*,
::before,
::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0 solid;
}

html {
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

h1,
h3 {
  font-size: inherit;
  font-weight: inherit;
}

a {
  color: inherit;
  text-decoration: inherit;
}

b {
  font-weight: bolder;
}

/* Layout */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--zinc-50);
  font-family: "berkeley-mono-variable", ui-monospace, monospace;
  font-stretch: condensed;
}

.content {
  flex-grow: 1;
}

header {
  padding: 4rem 0 3rem;
  text-align: center;
}

header h1 {
  color: var(--zinc-900);
  font-size: 2.25rem;
  line-height: calc(2.5 / 2.25);
  font-weight: 500;
  letter-spacing: -0.025em;
}

@media (width >= 40rem) {
  header h1 {
    font-size: 3rem;
    line-height: 1;
  }
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

/* Uptime input */
.field {
  display: flex;
  justify-content: center;
  margin-bottom: 3rem;
}

.field-box {
  position: relative;
  width: 100%;
  max-width: 20rem;
}

#uptime {
  appearance: none;
  width: 100%;
  padding: 1rem 3rem 1rem 0.75rem;
  font: inherit;
  font-size: 1.5rem;
  line-height: calc(2 / 1.5);
  letter-spacing: inherit;
  color: inherit;
  text-align: center;
  background-color: white;
  border: 1px solid var(--zinc-300);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

#uptime::placeholder {
  color: var(--zinc-400);
  opacity: 1;
}

#uptime:focus {
  --ring: var(--zinc-400);
  outline: 2px solid transparent;
  outline-offset: 2px;
  border-color: var(--ring);
  box-shadow:
    0 0 0 2px var(--ring),
    var(--shadow);
}

#uptime.invalid:focus {
  --ring: var(--red-500);
}

.field-suffix {
  position: absolute;
  inset-block: 0;
  right: 0;
  display: flex;
  align-items: center;
  padding-right: 1rem;
  pointer-events: none;
  color: var(--zinc-500);
  font-size: 1.5rem;
  line-height: calc(2 / 1.5);
}

/* Downtime table */
.downtime {
  overflow: hidden;
  background-color: white;
  border: 1px solid var(--zinc-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.downtime > div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
}

.downtime > div:not(:last-child) {
  border-bottom: 1px solid var(--zinc-100);
}

.downtime dt {
  color: var(--zinc-500);
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.downtime dd {
  color: var(--zinc-900);
  font-size: 1.125rem;
  line-height: calc(1.75 / 1.125);
}

/* Footer */
footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--zinc-500);
  font-size: 0.875rem;
  line-height: calc(1.25 / 0.875);
  background-color: white;
  border-top: 1px solid var(--zinc-200);
}

footer a {
  color: var(--zinc-700);
  transition: color 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

@media (hover: hover) {
  footer a:hover {
    color: var(--zinc-900);
  }
}