:root {
  --mdc-surface: #ffffff;
  --mdc-on-surface: #000000;
  --mdc-primary: #000000;/*#6200ee;*/
  --mdc-on-primary: #ffffff;
  --mdc-elevation-1: 0px 1px 3px rgba(0,0,0,0.12);
  --border-radius: 6px;
  font-family: 'Roboto', sans-serif;
}


body {
  margin: 0;
  background: var(--mdc-surface);
  color: var(--mdc-on-surface);
  font-size: 16px;
  line-height: 1.5;
}


.app-bar {
  background: var(--mdc-primary);
  color: var(--mdc-on-primary);
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}


.app-bar__title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}


.nav a {
  color: var(--mdc-on-primary);
  text-decoration: none;
  margin-left: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
.nav a:hover {
  text-decoration: underline;
}
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
}
.feed {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--mdc-surface);
  box-shadow: var(--mdc-elevation-1);
  border-radius: var(--border-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0px 3px 6px rgba(0,0,0,0.15);
}
.card__image img {
  width: 100%;
  height: auto;
  display: block;
}
.card__content {
  padding: 1rem;
}
.card__time {
  font-size: 0.875rem;
  color: #666;
}
.card__title {
  font-size: 1.25rem;
  margin: 0.5rem 0;
}
.card__title a {
  color: inherit;
  text-decoration: none;
}
.card__title a:hover {
  text-decoration: underline;
}
.card__source {
  font-size: 0.875rem;
  color: #999;
}
.card__desc {
  font-size: 0.9rem;
  color: #333;
}
.footer {
  padding: 1rem;
  text-align: center;
  font-size: 0.875rem;
  color: #777;
}