:root {
  color-scheme: dark;
  --bg: #0c1218;
  --surface: #151f29;
  --ink: #e4eef8;
  --muted: #9ab0c2;
  --line: #243644;
  --accent: #26b368;
  --link: #8bc5ff;
  --top-gradient: #123429;
  --bottom-gradient: #10293a;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7f0;
  --surface: #ffffff;
  --ink: #0f1720;
  --muted: #51626f;
  --line: #dde6dd;
  --accent: #00703c;
  --link: #003d67;
  --top-gradient: #dcefd8;
  --bottom-gradient: #cfe7df;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, var(--top-gradient), transparent 35%),
    radial-gradient(circle at bottom right, var(--bottom-gradient), transparent 30%),
    var(--bg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1rem;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

p {
  margin: 0;
  color: var(--muted);
}

button {
  border: 0;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.status {
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.source-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.source-title {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.article-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.article-item {
  display: grid;
  gap: 0.25rem;
}

.article-link {
  color: var(--link);
  text-decoration: none;
  font-weight: 600;
}

.article-link:hover {
  text-decoration: underline;
}

.article-time {
  color: var(--muted);
  font-size: 0.8rem;
}

.controls {
  margin-left: auto;
  display: flex;
  gap: 0.6rem;
}