:root {
  --bg: #f5f5f5;
  --text: #222;
  --card-bg: #fff;
  --accent: #007acc;
}
body.dark {
  --bg: #222;
  --text: #f5f5f5;
  --card-bg: #333;
  --accent: #00aaff;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--card-bg);
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header .logo {
  font-weight: bold;
  font-size: 1.2rem;
}

.controls button, .controls select {
  margin-left: 0.5rem;
}

main {
  max-width: 600px;
  margin: 2rem auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  padding: 1rem 1.5rem;
  border-radius: 8px;
  background: var(--card-bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

input {
  width: 100%;
  padding: 0.5rem;
  margin: 0.5rem 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  padding: 0.5rem 1rem;
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.news-item {
  padding: 0.5rem;
  background: rgba(0,0,0,0.05);
  border-radius: 4px;
}