/* base.css — reset, variables, typography, layout primitives */

:root {
    /* warm editorial palette: ivory, charcoal, forest, muted gold */
    --bg-primary: #f7f3ec;
    --bg-secondary: #fffaf2;
    --text-primary: #171717;
    --text-secondary: #5f5a52;
    --accent: #1f4d3a;
    --accent-light: #3f735a;
    --accent-soft: #e8f0ea;
    --accent-strong: #123326;
    --warm-soft: #f2dfb5;
    --warm-text: #7a5a1f;
    --border-light: #e1d8c8;
    --card-shadow: 0 24px 36px -18px rgba(23, 23, 23, 0.18), 0 10px 16px -12px rgba(31, 77, 58, 0.16);
    --glass-bg: rgba(255,250,242,0.84);
    --transition-smooth: all 0.25s cubic-bezier(0.2, 0, 0, 1);
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --content-width: 1200px;
    --header-height: 72px;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: var(--font-sans);
    background:
      radial-gradient(circle at top right, rgba(242, 223, 181, 0.42), transparent 30%),
      linear-gradient(180deg, #fffaf2 0%, var(--bg-primary) 46%, #eee5d7 100%);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
  }
  
  /* container */
  .container {
    max-width: var(--content-width);
    margin-inline: auto;
    padding-inline: 1.5rem;
    width: 100%;
  }
  
  /* flow utility — consistent spacing */
  .flow > * + * {
    margin-top: 1.25rem;
  }
  
  /* skip link */
  .skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    z-index: 100;
    text-decoration: none;
    border-radius: 0 0 8px 0;
  }
  .skip-link:focus {
    top: 0;
  }
  
  /* header / navigation base */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247, 243, 236, 0.84);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    height: var(--header-height);
    display: flex;
    align-items: center;
  }
  
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .logo {
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    text-decoration: none;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  
  .nav-list {
    display: flex;
    gap: 2.5rem;
    list-style: none;
  }
  .nav-list a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-smooth);
    font-size: 1rem;
  }
  .nav-list a:hover {
    color: var(--accent);
  }
  
  /* mobile toggle (hidden on desktop) */
  .mobile-toggle {
    display: none;
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 0.5rem;
  }
  
  /* section spacing */
  section {
    padding-block: 5rem;
  }
  
  /* footer */
  .site-footer {
    padding-block: 2rem;
    border-top: 1px solid var(--border-light);
    background: var(--bg-secondary);
  }
  .footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
  }
  .footer-links {
    display: flex;
    gap: 1.5rem;
  }
  .footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
  }
  .footer-links a:hover {
    color: var(--accent);
  }
  
  /* glass card */
  .glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 18px;
    box-shadow: var(--card-shadow);
  }