/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-grayish-blue: hsl(237, 18%, 59%);
  --color-soft-red: hsl(345, 95%, 68%);
  --color-white: hsl(0, 0%, 100%);
  --color-dark-desaturated-blue: hsl(236, 21%, 26%);
  --color-very-dark-blue: hsl(235, 16%, 14%);
  --color-very-dark-mostly-black-blue: hsl(234, 17%, 12%);
}

body {
  font-family: 'Red Hat Text', sans-serif;
  min-height: 100vh;
  background-color: var(--color-very-dark-mostly-black-blue);
}

/* Countdown component */
.countdown {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.countdown__background {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.countdown__stars {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.countdown__hills {
  position: absolute;
  bottom: 0;
  width: 100%;
}

.countdown__title {
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 1.2rem;
  margin-top: 8rem;
  text-align: center;
  padding: 0 1rem;
}

.countdown__timer {
  display: flex;
  gap: 1rem;
  margin-top: 4rem;
  padding: 0 1.5rem;
}

.countdown__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.countdown__card {
  background-color: var(--color-dark-desaturated-blue);
  padding: 0.5rem;
  border-radius: 0.5rem;
  min-width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 0 rgba(0, 0, 0, 0.2);
}

.countdown__number {
  color: var(--color-soft-red);
  font-size: 2rem;
  font-weight: 700;
}

.countdown__label {
  color: var(--color-grayish-blue);
  text-transform: uppercase;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
}

.countdown__footer {
  margin-top: auto;
  padding: 3rem 0;
}

/* Social component */
.social {
  display: flex;
  gap: 2rem;
}

.social__link {
  transition: filter 0.3s ease;
}

.social__link:hover {
  filter: brightness(0) saturate(100%) invert(59%) sepia(81%) saturate(2578%) hue-rotate(308deg) brightness(101%) contrast(97%);
}

/* Desktop styles */
@media (min-width: 768px) {
  .countdown__title {
    font-size: 1.5rem;
    margin-top: 10rem;
  }

  .countdown__timer {
    gap: 2rem;
  }

  .countdown__card {
    min-width: 150px;
    height: 150px;
  }

  .countdown__number {
    font-size: 4.5rem;
  }

  .countdown__label {
    font-size: 0.875rem;
  }
}