:root {
  color-scheme: dark;
  --paper: #101512;
  --paper-deep: #0c110f;
  --ink: #eef3ee;
  --heading: #c9d1cb;
  --muted: #83958b;
  --card: #18211d;
  --card-hover: #1d2a24;
  --line: #29372f;
  --accent: #7eaf92;
  --accent-bright: #acd2ba;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 14%, rgba(101, 151, 122, 0.14), transparent 34%),
    radial-gradient(circle at 14% 88%, rgba(57, 91, 72, 0.12), transparent 30%),
    linear-gradient(145deg, var(--paper), var(--paper-deep));
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.time-page {
  width: 100%;
  height: 100svh;
  min-height: 0;
  padding: clamp(1rem, 2.2vw, 2.75rem);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(0.65rem, 1.5vh, 1.35rem);
  overflow: hidden;
}

h1 {
  margin: 0;
  color: var(--heading);
  font-size: clamp(1.45rem, 3.25vw, 3.6rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.035em;
  white-space: nowrap;
}

h1 strong {
  color: var(--accent-bright);
  font-weight: 800;
}

.time-stage {
  min-height: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
}

.clock {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  padding-top: 0.02em;
  color: var(--ink);
  font-size: min(18.6vw, 31svh);
  font-weight: 800;
  letter-spacing: -0.085em;
  line-height: 0.76;
  white-space: nowrap;
  font-variant-numeric: tabular-nums lining-nums;
  text-shadow: 0 8px 42px rgba(0, 0, 0, 0.18);
}

.clock__digits {
  position: relative;
  display: flex;
  align-items: baseline;
}

.clock__digits::before {
  margin-right: 20px;
  content: "pm";
  visibility: hidden;
  font-size: 0.24em;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.clock__colon {
  display: inline-block;
  width: 0.44ch;
  color: var(--accent);
  text-align: center;
  transform: translateY(-0.035em);
}

#denver-hour,
#denver-minute,
#denver-second {
  display: inline-block;
  width: 1.82ch;
  font-feature-settings: "tnum" 1, "lnum" 1;
  font-variant-numeric: tabular-nums lining-nums;
  text-align: center;
}

#denver-second.is-tick {
  animation: tick 480ms ease-out;
}

.clock__period {
  position: static;
  margin-left: 20px;
  padding: 0;
  color: var(--accent-bright);
  background: none;
  border: 0;
  font-size: 0.24em;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  text-shadow: none;
  text-transform: lowercase;
  transform: none;
}

.time-meta {
  justify-self: end;
  max-width: 78%;
  text-align: right;
}

.time-meta__date {
  margin: 0;
  color: var(--heading);
  font-size: clamp(1.3rem, 2.7vw, 3rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.035em;
}

.time-meta__sun,
.time-meta__zone {
  margin: clamp(0.45rem, 1vh, 0.8rem) 0 0;
  color: #b8c2bb;
  font-size: clamp(0.72rem, 1.2vw, 1.12rem);
  line-height: 1.25;
  white-space: nowrap;
}

.time-meta__sun span[aria-hidden="true"] {
  color: var(--accent);
  font-weight: 800;
}

.sun-label {
  margin-right: 0.25em;
  font-weight: 700;
}

.time-meta__zone {
  color: var(--muted);
  font-size: clamp(0.62rem, 0.9vw, 0.82rem);
}

.zone-dock {
  width: min(100%, 60rem);
  justify-self: end;
  display: grid;
  grid-template-columns: repeat(4, minmax(8.5rem, 1fr));
  gap: clamp(0.45rem, 0.85vw, 0.85rem);
}

.zone {
  min-width: 0;
  padding: clamp(0.72rem, 1.2vw, 1.15rem) clamp(0.7rem, 1vw, 1rem);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.035), transparent 58%),
    var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
  text-align: center;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.zone:hover {
  background:
    linear-gradient(145deg, rgba(126, 175, 146, 0.08), transparent 62%),
    var(--card-hover);
  border-color: #42604e;
  transform: translateY(-3px);
}

.zone--home {
  background:
    linear-gradient(145deg, rgba(126, 175, 146, 0.12), transparent 64%),
    var(--card);
  box-shadow: inset 0 3px var(--accent), 0 14px 34px rgba(0, 0, 0, 0.12);
}

.zone--home h2,
.zone--home .zone__abbr {
  color: var(--accent-bright);
}

.zone__heading {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.45rem;
}

.zone h2 {
  margin: 0;
  font-size: clamp(0.82rem, 1.25vw, 1.2rem);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.zone__abbr {
  color: var(--muted);
  font-size: clamp(0.48rem, 0.65vw, 0.62rem);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.zone__time {
  margin-top: 0.28rem;
  display: block;
  font-size: clamp(1.05rem, 1.8vw, 1.7rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.zone__time small {
  margin-left: 0.08em;
  font-size: 0.65em;
  text-transform: lowercase;
}

.reveal {
  opacity: 0;
  animation: reveal 580ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.reveal--one { animation-delay: 40ms; }
.reveal--two { animation-delay: 110ms; }
.reveal--three { animation-delay: 190ms; }
.reveal--four { animation-delay: 270ms; }

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes tick {
  0% {
    opacity: 0.78;
  }
  100% {
    opacity: 1;
  }
}

@media (max-width: 900px) {
  h1 {
    font-size: clamp(1.25rem, 4.4vw, 2.4rem);
    white-space: normal;
  }

  .clock {
    font-size: min(18.2vw, 25svh);
  }

  .time-meta {
    max-width: 100%;
  }

  .zone-dock {
    width: 100%;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .time-page {
    padding: 1rem;
    gap: 0.6rem;
  }

  h1 {
    max-width: 18ch;
    font-size: clamp(1.35rem, 7vw, 2rem);
  }

  .clock {
    font-size: min(19.5vw, 19svh);
    letter-spacing: -0.09em;
  }

  .time-meta__date {
    font-size: clamp(1.1rem, 5.6vw, 1.65rem);
  }

  .time-meta__sun {
    font-size: clamp(0.66rem, 3vw, 0.82rem);
  }

  .zone-dock {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
  }

  .zone {
    padding: 0.65rem 0.6rem;
  }

  .zone h2 {
    font-size: 0.78rem;
  }

  .zone__time {
    font-size: 1.05rem;
  }
}

@media (max-height: 650px) and (min-width: 621px) {
  .time-page {
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
    gap: 0.45rem;
  }

  .clock {
    font-size: min(17vw, 29svh);
  }

  .time-meta__date {
    font-size: min(2.5vw, 1.85rem);
  }

  .time-meta__sun {
    margin-top: 0.35rem;
  }

  .time-meta__zone {
    margin-top: 0.25rem;
  }

  .zone {
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
  }
}

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