@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&family=Merriweather:wght@300;400;700&display=swap');

:root {

  /* Color palette variables */
  --color-primary: #00171f;
  --color-secondary: #b9bfc1;
  --color-accent: #0094ff;
  --color-highlight: #6f0f0f;

  /* UI base style variables */
  --color-bg: white;
  --color-surface: #dfe1e1;
  --color-border: #6b7280;
  --color-text: var(--color-primary);
  --color-text-secondary: white;

  /* Status variant variables */
  --color-success: #16a34a;
  --color-warning: #b45309;
  --color-danger: #dc2626;
  --color-info: #4fb5fe;

  /* Accessibility helpers */
  --focus-ring: 3px solid color-mix(in srgb, var(--color-primary) 40%, #fff);
  /* Typography */
  --font-body: "Merriweather", "Roboto Slab", Georgia, "Times New Roman", serif;
  --font-head: "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --head-transform: uppercase;
  --head-letterspacing: 0.08em;
  /* Spacing scale */
  --space-xxs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.25rem;
  --space-xxl: 3.5rem;
  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1rem, 3vw, 2rem);
  --gutter: 1rem;
  --card-radius: 14px;
  /* Grid */
  --columns: 12;
  --bp-sm: 480px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  /* Size tokens */
  --avatar-size-lg: clamp(80px, 18vw, 160px);
  --avatar-size-sm: clamp(48px, 12vw, 96px);
  /* Transitions */
  --motion-snip: 200ms;
  --motion-snappy: 400ms;
}

/* Base rules */
* { box-sizing: border-box; }
html,body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  font-size: 16px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: 0;
  top: 0;
  transform: translateY(-120%);
  background: var(--color-primary);
  color: white;
  padding: 0.5rem 0.75rem;
  z-index: 9999;
}
.skip-link:focus { transform: translateY(0); }

img { max-width: 100%; display: block; height: auto; }

/* Headings */
h1,h2,h3,h4,h5 {
  font-family: var(--font-head);
  color: var(--color-text);
  text-transform: var(--head-transform);
  letter-spacing: var(--head-letterspacing);
  margin: 0 0 var(--space-sm) 0;
}
h1 { font-size: clamp(3.125rem, 3.5vw, 3.5rem); }
h2 { font-size: clamp(2.125rem, 3vw, 3rem); }
h3 { font-size: clamp(0.75rem, 2vw, 2rem); }

p, li { font-size: 1rem; color: var(--color-text); }

/* Links and focus */
a { color: var(--color-accent); text-decoration: none; }
a:focus, a:focus-visible { outline: var(--focus-ring); border-radius: 6px; }
a:hover { color: color-mix(in srgb, var(--color-accent), var(--color-highlight)); }
/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .5rem .9rem; border-radius: var(--card-radius); border: none;
  background: var(--color-highlight); color: white; cursor: pointer;
  font-family: var(--font-head); text-transform: none; font-weight: 600;
}
.btn:hover {
  background: calc(var(--color-highlight) + 10%);
  color: white; 
}
.btn:focus { outline: var(--focus-ring); }

/* Grid helpers */
.grid { display: grid; gap: var(--gutter); }
.grid-columns-2 { grid-template-columns: 1fr 1fr; }
.grid-columns-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: var(--bp-lg)) {
  .grid-columns-2, .grid-columns-3 { grid-template-columns: 1fr; }
}

/* Utilities */
.center { display:flex; align-items:center; justify-content:center; }
.stack { display:flex; flex-direction:column; gap:var(--space-sm); }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: var(--space-lg);
  box-shadow: 0 6px 18px rgba(11,19,49,0.06);
}

/* Responsive utilities */
@media (max-width: var(--bp-sm)) {
  :root { --space-lg: 1rem; }
}