/* undercoverboss.ai UI Kit — shared styles (extends colors_and_type.css) */

body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  margin: 0;
  overflow-x: hidden;
  --fg-1: var(--bone);
  --fg-2: var(--bone-a72);
  --fg-3: var(--bone-a48);
  --border: var(--bone-a12);
  --border-strong: var(--bone-a24);
  --fg-inv: var(--ink);
}

/* ---- Grain overlay ---- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.mono { font-family: var(--font-mono); }
.display { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; }

/* ---- Classification bar ---- */
.uo-classification {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  border-bottom: 1px solid var(--bone-a12);
  padding: 10px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--bone-a48);
}
.uo-classification .left { display: flex; gap: 24px; align-items: center; }
.uo-classification .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); animation: uo-pulse 2s ease-in-out infinite; }
@keyframes uo-pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

/* ---- Nav ---- */
.uo-nav {
  padding: 28px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--bone-a12);
}
.uo-logo {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display); font-size: 22px; font-weight: 500; letter-spacing: -0.03em; line-height: 1;
}
.uo-logo em { color: var(--signal); font-style: italic; }
.uo-logo-mark {
  width: 34px; height: 34px;
  background-image: url("../assets/aperture-mark-bone.svg");
  background-size: contain; background-repeat: no-repeat; background-position: center;
  flex-shrink: 0;
}

.uo-nav-links { display: flex; gap: 40px; list-style: none; font-size: 14px; margin: 0; padding: 0; }
.uo-nav-links a { color: var(--bone); text-decoration: none; opacity: .7; transition: opacity .2s; border-bottom: 0; }
.uo-nav-links a:hover { opacity: 1; }

/* ---- Buttons ---- */
.uo-btn {
  background: var(--bone); color: var(--ink); border: 0;
  padding: 11px 22px; font-family: var(--font-body); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all .2s; text-decoration: none; display: inline-block;
  border-radius: 0;
  white-space: nowrap;
}
.uo-btn:hover { background: var(--signal); color: var(--bone); }
.uo-btn-primary { background: var(--signal); color: var(--bone); }
.uo-btn-primary:hover { background: var(--ink); color: var(--bone); border: 1px solid var(--signal); padding: 10px 21px; }

.uo-btn-ghost {
  background: transparent; color: var(--bone); border: 1px solid var(--bone);
  padding: 10px 21px; font-family: var(--font-body); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all .2s; text-decoration: none; display: inline-block;
}
.uo-btn-ghost:hover { background: var(--bone); color: var(--ink); }

/* ---- Section scaffolding ---- */
.uo-section { padding: 120px 32px; max-width: 1280px; margin: 0 auto; }
.uo-section-meta {
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .2em;
  color: var(--bone-a48); margin-bottom: 24px; display: flex; gap: 12px; align-items: center;
}
.uo-section-meta::before { content: ""; width: 32px; height: 1px; background: var(--signal); }

h2.uo-section-title, .uo-section-title {
  font-family: var(--font-display); font-size: clamp(40px, 5vw, 64px);
  font-weight: 400; line-height: 1; letter-spacing: -.03em;
  margin: 0 0 24px; max-width: 900px;
}
.uo-section-title em { color: var(--signal); font-style: italic; }

.uo-section-lede {
  font-size: 20px; max-width: 680px; color: var(--bone-a72);
  line-height: 1.5; margin-bottom: 64px;
}

/* Bone-surface section inversion */
.uo-on-bone {
  background: var(--bone); color: var(--ink);
  --fg-1: var(--ink);
  --fg-2: var(--ink-a72);
  --fg-3: var(--ink-a48);
  --border: var(--ink-a12);
  --border-strong: var(--ink-a24);
  --fg-inv: var(--bone);
}
.uo-on-bone .uo-section-meta { color: var(--ink-a72); }
.uo-on-bone .uo-section-lede { color: var(--ink-a72); }

/* ---- Rule ---- */
.uo-rule { height: 1px; background: var(--bone-a12); border: 0; }
.uo-on-bone .uo-rule { background: var(--ink-a12); }