:root {
  --bg: #0f172a;                    
  --card-bg: rgba(15, 23, 42, 0.65); 
  --card-border: rgba(255, 255, 255, 0.08);
  --muted: #94a3b8;                 
  --accent: #a78bfa;                 
  --accent-2: #c4b5fd;
  --text: #f1f5f9;                   
  --radius: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.6);
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

h1 {
  margin: 20px 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  color: var(--text);
}

.clock-container {
  max-width: 960px;
  margin: 40px auto;
  padding: 32px;
  background: transparent;
}

select {
  display: block;
  width: 100%;
  border-radius: var(--radius);
  font-size: 1.05rem;
  padding: 14px 16px;
  border: none;
  background: var(--card-bg);
  color: var(--text);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  margin-bottom: 32px;
  transition: all 0.3s ease;
}

select:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

select option {
  background: #1e293b;
  color: var(--text);
}

.city {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--card-border);
  margin: 16px 0;
  transition: all 0.4s ease;
}

.city:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.city > div:first-child {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

h2 {
  margin: 0;
  font-size: 1.4rem;
  color: var(--text);
}

.date {
  color: var(--muted);
  font-size: 1rem;
}

.time {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--text);
}

.time small {
  font-size: 1.2rem;
  font-weight: 600;
  margin-left: 10px;
  opacity: 0.9;
  color: var(--accent);
}

.highlighted {
  box-shadow: 0 0 0 4px rgba(167, 139, 250, 0.3);
  transform: translateY(-6px) scale(1.02);
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(167, 139, 250, 0.2);
}

footer {
  text-align: center;
  font-size: 0.95rem;
  color: var(--muted);
  margin: 40px 0 80px;
}


@media (min-width: 700px) {
  .city {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 28px 32px;
  }

  .time {
    font-size: 3.4rem;
  }

  .clock-container {
    padding: 40px;
    background: var(--card-bg);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-radius: calc(var(--radius) + 8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  }
}

@media (max-width: 360px) {
  .time { 
    font-size: 2.2rem; 
  }
  .time small { 
    font-size: 1rem; 
  }
}