:root {
  --kasnsa-primary: #0b3d2e;
  --kasnsa-primary-light: #14664d;
  --kasnsa-accent: #c9a84c;
  --kasnsa-bg: #f8f9f5;
}

html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: 'Inter', 'Noto Sans Malayalam', system-ui, sans-serif;
  background: var(--kasnsa-bg);
  color: #1a1a1a;
  display: flex; flex-direction: column; min-height: 100vh;
}
main { flex: 1; }

/* Malayalam font helper */
.ml { font-family: 'Noto Sans Malayalam', sans-serif; }

/* Navbar */
.kasnsa-nav { background: var(--kasnsa-primary); }
.kasnsa-nav .brand-title { font-weight: 700; font-size: 1.1rem; letter-spacing: .04em; }
.kasnsa-nav .brand-subtitle { font-size: .7rem; opacity: .85; display: block; line-height: 1; }
.kasnsa-nav .nav-link { font-weight: 500; }

/* Footer */
.kasnsa-footer { background: var(--kasnsa-primary); }

/* Hero */
.kasnsa-hero {
  background: linear-gradient(135deg, var(--kasnsa-primary) 0%, var(--kasnsa-primary-light) 60%, #1a7a5a 100%);
  color: #fff; padding: 3.5rem 0;
}
.kasnsa-hero h1 { font-weight: 800; }
.kasnsa-hero .lead { opacity: .9; }

/* Cards */
.kas-card { border: none; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,.07); }
.kas-card:hover { box-shadow: 0 6px 24px rgba(0,0,0,.11); transition: box-shadow .2s; }

/* Focus */
.btn:focus, .form-control:focus { box-shadow: 0 0 0 .2rem rgba(11,61,46,.2); border-color: var(--kasnsa-primary-light); }

/* Unit tree */
.unit-tree ul { list-style: none; padding-left: 1.2rem; border-left: 1px dashed #ccc; }
.unit-tree li { padding: .25rem 0; }