:root {
  --bsn-c-bg: oklch(25% 0.02 120); /* Dark olive/woodland green */
  --bsn-c-bg-light: oklch(92% 0.03 80); /* Light warm wood */
  --bsn-c-text: oklch(90% 0.02 120); /* Light text */
  --bsn-c-text-dark: oklch(20% 0.02 120); /* Dark text */
  --bsn-c-accent: oklch(65% 0.15 60); /* Warm oak wood orange */
  --bsn-c-accent-hover: oklch(75% 0.15 60);
  
  --bsn-f-body: system-ui, sans-serif;
  --bsn-f-display: "Georgia", "Times New Roman", serif; /* Elegant serif */
}

/* Global Reset & Mobile overflow protection */
html, body {
  margin: 0;
  padding: 0;
  overflow-x: clip;
  background-color: var(--bsn-c-bg);
  color: var(--bsn-c-text);
  font-family: var(--bsn-f-body);
  line-height: 1.6;
}

*, *::before, *::after { box-sizing: border-box; }
img, svg { max-width: 100%; height: auto; display: block; border-radius: 4px; }

/* Typography clamp() */
h1, h2, h3, h4, .bsn-display {
  font-family: var(--bsn-f-display);
  line-height: 1.15;
  margin-top: 0;
  overflow-wrap: anywhere;
  word-break: normal;
  hyphens: auto;
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); color: var(--bsn-c-accent); }
h2 { font-size: clamp(1.75rem, 4vw + 1rem, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw + 0.5rem, 2rem); }
p, li, td, a, code { overflow-wrap: anywhere; word-break: normal; hyphens: auto; }

a { color: var(--bsn-c-accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--bsn-c-accent-hover); }

/* Layout */
.bsn-container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 768px) { .bsn-container { padding: 0 2rem; } }

.bsn-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .bsn-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); } }
.bsn-grid > * { min-width: 0; }

.bsn-flex { display: flex; gap: 2rem; flex-wrap: wrap; }
.bsn-flex-col { display: flex; flex-direction: column; gap: 1rem; }

/* Header & Nav */
.bsn-header { padding: 1rem 0; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 2rem; }
.bsn-logo { font-family: var(--bsn-f-display); font-size: 2rem; color: var(--bsn-c-accent); }
.bsn-nav { display: none; }
@media (min-width: 1024px) { .bsn-nav { display: flex; gap: 1.5rem; align-items: center; } }
.bsn-btn { background: var(--bsn-c-accent); color: var(--bsn-c-bg); padding: 0.75rem 1.5rem; font-weight: bold; border-radius: 4px; display: inline-block; }
.bsn-btn:hover { background: var(--bsn-c-accent-hover); color: var(--bsn-c-bg); }

/* Components for LLM to use */
.bsn-section { padding: 4rem 0; }
.bsn-section-light { background: var(--bsn-c-bg-light); color: var(--bsn-c-text-dark); padding: 4rem 0; }
.bsn-section-light h2, .bsn-section-light h3 { color: var(--bsn-c-bg); }

.bsn-hero-wrap { position: relative; padding: 4rem 0; text-align: center; }
.bsn-hero-img-wrap { margin: 2rem auto; max-width: 900px; border: 1px solid var(--bsn-c-accent); padding: 1rem; }

.bsn-card { border: 1px solid rgba(255,255,255,0.1); padding: 2rem; background: rgba(0,0,0,0.2); position: relative; }
.bsn-card-num { font-family: var(--bsn-f-display); font-size: 4rem; color: rgba(255,255,255,0.05); position: absolute; top: 10px; right: 20px; line-height: 1; }
.bsn-card:hover .bsn-card-num { color: var(--bsn-c-accent); }

/* Table */
.bsn-table-wrapper { overflow-x: auto; margin: 2rem 0; }
.bsn-table { width: 100%; border-collapse: collapse; min-width: 500px; }
.bsn-table th, .bsn-table td { border: 1px solid rgba(255,255,255,0.1); padding: 1rem; text-align: left; }

/* Forms */
.bsn-form-group { margin-bottom: 1.5rem; }
.bsn-form-input, .bsn-form-textarea { width: 100%; padding: 0.75rem; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.2); color: #fff; font-family: inherit; }
.bsn-honey { display: none; }

/* A11y */
:focus-visible { outline: 3px solid var(--bsn-c-accent); outline-offset: 2px; }
.bsn-skip-link { position: absolute; top: -100px; left: 0; background: var(--bsn-c-accent); color: #000; padding: 1rem; z-index: 1000; }
.bsn-skip-link:focus { top: 0; }

/* Footer */
.bsn-footer { border-top: 1px solid rgba(255,255,255,0.1); padding: 3rem 0; margin-top: 4rem; font-size: 0.9rem; }
.bsn-footer-links { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }