/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography Overrides */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Layout Utilities */
.container {
  max-width: 95%;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* Floating Glass Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) 0;
}

.header-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-md);
  align-items: center;
}

.logo {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--text-primary);
  grid-column: 1 / 2;
  grid-row: 1 / 2;
}

.logo span {
  color: var(--accent);
}

nav {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  justify-self: end;
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.filters {
  grid-column: 1 / 3;
  grid-row: 2 / 3;
  width: 100%;
}

@media (min-width: 769px) {
  .header-content {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }
  .filters {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
    width: auto;
  }
  nav {
    grid-column: 3 / 4;
  }
}

main {
  padding: var(--space-2xl) 0;
  min-height: calc(100vh - 200px);
}

/* Grid Layouts */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
}

footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-md) 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .filters {
    margin-top: 0;
  }
  .container {
    padding: 0 var(--space-md);
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
}