:root {
  --clr-bg: #f9f3e8;
  --clr-text: #156971;
  --clr-heading: #0e4449;
  --clr-muted: #4a7a7d;

  --clr-primary: #156971;
  --clr-secondary: #399f8b;

  --clr-neon: #FF5F1F;
  --clr-dark-bg: #051b1d;
  --clr-dark-card: #0e2a2e;

  --clr-card: #ffffff;
  --clr-surface: #edfcf9;

  --radius: 16px;
  --shadow: 0 10px 30px rgba(21, 105, 113, 0.15);
  --container: 1200px;
  --gap: 1rem;
  --pad: clamp(24px, 4vw, 32px);
}

*, *::before, *::after { box-sizing: border-box; }

html { height: 100%; }
body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--clr-secondary); text-decoration: none; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--pad); width: 100%; }
.text-center { text-align: center; }

/* Visually hidden — accessible to screen readers, invisible to sighted users */
.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;
}