body {
  background-color: #0f172a;
  font-family: "Inter", sans-serif;
  color: #e2e8f0;
}

.container {
  background-color: #1e293b;
  max-width: 900px;
  margin: 80px auto;
  padding: 40px;
  text-align: center;
  border-radius: 16px;
  box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.4);
}

h1 {
  font-family: "Poppins", sans-serif;
  color: #38bdf8;
  font-size: 42px;
  font-weight: 700;
  text-shadow: 0 0 15px rgba(56, 189, 248, 0.4);
  margin-bottom: 0;
}
h2 {
  font-family: "Poppins", sans-serif;
  color: #60a5fa;
  font-weight: 600;
}
h3 {
  font-family: "Poppins", sans-serif;
  color: #cbd5e1;
  font-weight: 600;
  font-size: 18px;
  line-height: 1.3;
  margin: 8px 0;
}

p {
  color: #94a3b8;
}

p.introduction {
  font-size: 20px;
}

.time {
  font-size: 32px;
  color: #f8fafc;
  font-weight: 700;
}

.local-time {
  background-color: #334155;
  padding: 30px;
  border-radius: 16px;
  margin: 30px 0;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.time-local {
  font-size: 48px;
  font-weight: 700;
  color: #38bdf8;
}
.date-local {
  margin-bottom: 8px;
}

select {
  display: block;
  width: 100%;
  background-color: #334155;
  color: #f8fafc;
  border: 1px solid #475569;
  font-size: 18px;
  padding: 10px;
  border-radius: 8px;
}

select option {
  background-color: #1e293b;
}

.selected-clock {
  background-color: #334155;
  padding: 24px;
  border-radius: 12px;
  margin: 30px 0;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.selected-clock .time-selected {
  font-size: 40px;
  font-weight: 700;
  color: #38bdf8;
  margin: 15px 0;
}

.selected-clock .date-selected {
  color: #94a3b8;
  margin-bottom: 8px;
}

.clock-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.world-clock-card {
  background-color: #334155;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: 200ms all ease-in-out;
}

.world-clock-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.35);
}

a {
  color: #38bdf8;
  text-decoration: none;
  font-weight: 500;
}

a:visited {
  color: #38bdf8;
}

a:hover {
  color: #60a5fa;
  text-decoration: underline;
}

footer {
  color: #94a3b8;
  font-size: 14px;
  margin-top: 40px;
}