/* Secure PGP — White & #BCBCBC Theme */
:root {
  --bg: #ffffff;            /* page background (white) */
  --surface: #bcbcbc;       /* panels and hero (#BCBCBC) */
  --text: #1e1e1e;          /* primary text */
  --muted: #4d4d4d;         /* secondary text */
  --border: #d9d9d9;        /* soft borders */
  --primary: #2563eb;       /* action color (blue) */
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.65;
}
.container { width: min(1100px, 92%); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: #fff; position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 0; }
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--text); font-weight: 800; }
.logo-img { height: 100px; width: auto; }
.nav ul { display: flex; list-style: none; gap: 1rem; margin: 0; padding: 0; }
.nav a { color: var(--muted); text-decoration: none; padding: .5rem .6rem; border-radius: 8px; }
.nav a:hover, .nav a.active { color: var(--text); background: #f5f5f5; }

/* Hero uses #BCBCBC */
.hero { background: var(--surface); border-bottom: 1px solid var(--border); padding: 3rem 0 2.5rem; }
.hero h1 { margin: 0 0 .4rem; font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
.hero .lead { color: #2a2a2a; max-width: 75ch; }

/* Sections */
.section { padding: 2rem 0; }
.card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 1rem; }
.card h3 { margin-top: 0; }
.card p { color: #333; }
.grid { display: grid; gap: 1rem; }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-3 { grid-template-columns: 1fr; } }

/* Buttons */
.btn { display: inline-block; border-radius: 10px; padding: .7rem 1rem; text-decoration: none; font-weight: 600; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-outline { border: 2px solid var(--border); color: var(--text); background: transparent; }
.btn-outline:hover { background: #efefef; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); }
.footer-inner { display: flex; gap: 1rem; align-items: center; justify-content: space-between; padding: 1rem 0; flex-wrap: wrap; }
.site-footer nav a { color: #2a2a2a; text-decoration: none; margin-right: .75rem; }
.site-footer nav a:hover { color: #000; }

/* Forms */
.contact-form { max-width: 720px; margin: 0 auto; }
.form-row { display: grid; gap: .4rem; margin-bottom: .9rem; }
input[type="text"], input[type="email"], textarea { background: #fff; border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: .6rem .75rem; }
.error { color: #c53030; min-height: 1em; }
.form-actions { display: flex; gap: .6rem; }