:root {
  --background: #06080d;
  --panel: rgba(10, 14, 21, 0.88);
  --line: rgba(130, 188, 255, 0.23);
  --orange: #f28b2a;
  --orange-light: #ffc06b;
  --text: #f7fbff;
  --muted: rgba(232, 236, 245, 0.68);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  color: var(--text);
  background: var(--background);
  font-family: "Barlow Condensed", sans-serif;
}

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 20px;
  background:
    linear-gradient(to bottom, rgba(4, 7, 12, 0.22), rgba(3, 5, 9, 0.91)),
    url("background.png") center / cover no-repeat;
}

.overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 45%, rgba(83, 151, 237, 0.10), transparent 24%),
    radial-gradient(circle at 50% 45%, rgba(242, 139, 42, 0.07), transparent 31%),
    linear-gradient(to right, rgba(4, 6, 10, 0.78), transparent 50%, rgba(4, 6, 10, 0.82));
}

.countdown {
  position: relative;
  z-index: 2;
  width: min(760px, 100%);
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 12px;
  transition:
    opacity 350ms ease,
    transform 350ms ease,
    visibility 350ms ease;
}

.countdown.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: scale(0.96);
  pointer-events: none;
}

.count-box {
  padding: 25px 12px 18px;
  text-align: center;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent),
    var(--panel);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 18px 45px rgba(0, 0, 0, 0.34);
}

.count-box.accent {
  border-color: rgba(242, 139, 42, 0.45);
}

.count-value {
  color: var(--text);
  font-size: clamp(3.8rem, 8vw, 6.6rem);
  font-weight: 800;
  line-height: 0.86;
  font-variant-numeric: tabular-nums;
}

.accent .count-value {
  color: var(--orange);
  text-shadow: 0 0 24px rgba(242, 139, 42, 0.24);
}

.count-unit {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.finished-message {
  position: absolute;
  text-decoration: none;
  cursor: pointer;
  z-index: 3;
  width: min(920px, calc(100% - 28px));
  padding: clamp(32px, 7vw, 68px) 20px;
  border: 2px solid var(--orange);
  background:
    linear-gradient(135deg, rgba(242, 139, 42, 0.18), transparent 46%),
    rgba(8, 10, 15, 0.94);
  color: var(--orange-light);
  box-shadow:
    0 0 50px rgba(242, 139, 42, 0.18),
    inset 0 0 35px rgba(242, 139, 42, 0.06);
  text-align: center;
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 800;
  line-height: 0.88;
  letter-spacing: 0.025em;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.86);
  transition:
    opacity 450ms ease,
    transform 450ms cubic-bezier(.2, .8, .2, 1),
    visibility 450ms ease;
}

.finished-message.is-visible {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.finished-message span {
  display: block;
}

.finished-message small {
  display: block;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.62);
  font-size: clamp(0.7rem, 1.5vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.22em;
}

.finished-message:hover {
  border-color: var(--orange-light);
  background:
    linear-gradient(135deg, rgba(242, 139, 42, 0.26), transparent 46%),
    rgba(8, 10, 15, 0.97);
  box-shadow:
    0 0 70px rgba(242, 139, 42, 0.28),
    inset 0 0 45px rgba(242, 139, 42, 0.10);
}

.finished-message:focus-visible {
  outline: 3px solid white;
  outline-offset: 6px;
}

@media (max-width: 760px) {
  .countdown {
    width: min(430px, 100%);
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 420px) {
  .hero {
    padding: 14px;
  }

  .countdown {
    gap: 8px;
  }

  .count-box {
    padding: 18px 7px 14px;
  }

  .count-unit {
    font-size: 0.64rem;
    letter-spacing: 0.1em;
  }
}