* {
  box-sizing: border-box;
}

body {
  --background-color: white;
  --text-color: black;
  --elements-color: white;
  margin: 0;
  font-family: Nunito, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
}

body.dark {
  --background-color: hsl(207, 26%, 17%);
  --text-color: white;
  --elements-color: hsl(209, 23%, 22%);
}

main {
  padding: 24px;
}

a {
  text-decoration: none;
  color: inherit;
}

/* HEADER */
.header-container {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  padding-inline: 30px;
  background-color: var(--elements-color);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin-inline: auto;
}

.title {
  font-weight: 800;
}

.theme-changer {
  cursor: pointer;
}

/* SEARCH + FILTER */
.search-filter-container {
  margin: 30px auto 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  max-width: 1200px;
}

.search-container {
  max-width: 350px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 10px;
  background-color: var(--elements-color);
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.15);
}

.search-container input {
  border: none;
  outline: none;
  width: 100%;
  font-size: 15px;
  background-color: inherit;
  color: inherit;
}

.search-container input::placeholder {
  color: #999;
}

.search-container i {
  font-size: 20px;
}

.filter-by-region {
  width: 200px;
  padding: 12px;
  border: none;
  outline: none;
  border-radius: 6px;
  background-color: var(--elements-color);
  color: var(--text-color);
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.15);
  cursor: pointer;
}

/* COUNTRIES GRID */
.countries-container {
  max-width: 1200px;
  margin-inline: auto;
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  align-items: stretch; /* FIX */
  grid-auto-rows: 1fr; /* 🔥 ADD THIS */
}

/* CARD */
.country-card {
  display: flex;
  flex-direction: column;
  border-radius: 9px;
  height: 100%; /* FIX */
  overflow: hidden;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
  transition: 0.3s;
  background-color: var(--elements-color);
}

.country-card:hover {
  transform: scale(1.02);
}

.country-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.card-text {
  padding: 15px;
  flex-grow: 1;
  display: flex; /* FIX */
  flex-direction: column; /* FIX */
  justify-content: space-between; /* ADD THIS */
}

.card-title {
  font-size: 20px;
  margin-block: 10px;
  min-height: 48px; /* ADD THIS */
}

.card-text p {
  margin: 6px 0;
}

/* LOADER */
.loader-container {
  position: fixed;
  inset: 0;
  background-color: var(--background-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.loader {
  width: 50px;
  height: 50px;
  border: 5px solid #ccc;
  border-top: 5px solid #00bcd4;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

.hide {
  display: none;
}

/* MOBILE */
@media (max-width: 600px) {
  main {
    padding: 12px;
  }

  .title {
    font-size: 14px;
  }

  .theme-changer {
    font-size: 12px;
  }

  .search-filter-container {
    flex-direction: column;
    align-items: stretch;
    gap: 15px;
  }

  .search-container {
    max-width: 100%;
  }

  .filter-by-region {
    width: 100%;
  }

  .countries-container {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .country-card {
    width: 100%;
  }

  .card-title {
    font-size: 16px;
  }
}

/* TABLET */
@media (max-width: 900px) {
  .countries-container {
    grid-template-columns: repeat(1, 1fr);
    padding-inline: 20px;
  }
}

/* DESKTOP */
@media (min-width: 901px) {
  .countries-container {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}