/* =====================================================
   MTB · Общие элементы (TopNav, Authorship Strip, Footer, Breadcrumb)
   ===================================================== */

@import url('tokens.css');

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-warm);
  color: var(--text-dark);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 32px; position: relative; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 32px; }
.container-text { max-width: 720px; margin: 0 auto; padding: 0 32px; }

/* ---------- AUTHORSHIP STRIP ---------- */
.authorship-strip {
  background: var(--bg-cream);
  border-bottom: 1px solid var(--border);
  padding: 6px 32px;
  text-align: center;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
}
.authorship-strip b { color: var(--accent); font-weight: 500; }
.authorship-strip .sep { margin: 0 10px; color: var(--border); }

/* ---------- TOPNAV ---------- */
.topnav {
  position: sticky; top: 0; z-index: 30;
  background: rgba(245, 241, 236, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.topnav__inner {
  max-width: 1240px; margin: 0 auto; padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
}
.topnav__brand {
  display: flex; align-items: center; gap: 14px;
  color: var(--text-dark);
}
.topnav__mark {
  width: 28px; height: 28px; flex-shrink: 0;
  background: radial-gradient(circle at 35% 35%, #E8A868, var(--accent) 55%, var(--accent-dark));
  border-radius: 50%;
}
.topnav__brand-text { line-height: 1; }
.topnav__brand-name {
  font-family: var(--font-serif); font-style: italic; font-weight: 500;
  font-size: 22px; letter-spacing: -0.3px;
}
.topnav__brand-sub {
  display: block; margin-top: 3px;
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); font-weight: 500;
}
.topnav__links { display: flex; gap: 28px; font-size: 14px; color: var(--text-muted); font-weight: 400; }
.topnav__links a {
  color: inherit; padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.topnav__links a:hover, .topnav__links a.active { color: var(--accent); border-bottom-color: var(--accent); }
.topnav__search {
  background: transparent; border: 1px solid var(--border); border-radius: 4px;
  padding: 8px 10px; cursor: pointer; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px;
  transition: border-color 0.2s, color 0.2s;
  font-family: var(--font-body); font-size: 13px;
}
.topnav__search:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- BREADCRUMB ---------- */
.breadcrumb {
  display: flex; gap: 10px; align-items: center;
  font-size: 13px; color: var(--text-muted);
  padding: 24px 0 8px;
  letter-spacing: 0.2px;
}
.breadcrumb a {
  color: var(--text-muted);
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.breadcrumb a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.breadcrumb__sep { color: var(--border); font-size: 11px; }
.breadcrumb__current { color: var(--text-dark); }

/* ---------- DISCLAIMER ---------- */
.disclaimer {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-top: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-muted);
  border-radius: 0 4px 4px 0;
}
.disclaimer b { color: var(--text-dark); font-weight: 500; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body); font-weight: 500; font-size: 15px;
  cursor: pointer; border-radius: 4px;
  transition: all 0.2s ease;
  text-decoration: none; letter-spacing: 0.3px;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: white; border-color: var(--accent); padding: 13px 28px; }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn-secondary {
  background: transparent; color: var(--text-dark);
  border-color: var(--border); padding: 12px 26px;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost {
  background: transparent; color: var(--text-muted);
  border-color: transparent; padding: 8px 14px;
  font-size: 13px;
}
.btn-ghost:hover { color: var(--accent); }

/* ---------- CHIPS ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  font-size: 11px; font-weight: 500; letter-spacing: 0.3px;
  border-radius: 3px;
  white-space: nowrap;
}
.chip-accent { background: var(--accent); color: white; }
.chip-primary { background: var(--accent-soft); color: var(--accent-dark); }
.chip-neutral { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.chip-link { cursor: pointer; transition: all 0.2s ease; }
.chip-link:hover { background: var(--accent); color: white; border-color: var(--accent); }
.chip-uppercase { text-transform: uppercase; letter-spacing: 1.5px; }

/* ---------- OVERLINE ---------- */
.overline {
  font-family: var(--font-body); font-weight: 500; font-size: 11px;
  letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--accent);
  display: block;
}
.overline-muted { color: var(--text-muted); }

/* ---------- INDICATORS ---------- */
.indicator-row {
  display: flex; align-items: center; gap: 14px;
  flex-wrap: wrap;
}
.impact-dots { display: flex; gap: 4px; }
.impact-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--border); }
.impact-dot.on { background: var(--accent); }

.level-dots { display: flex; gap: 5px; }
.level-dot {
  width: 8px; height: 8px; border-radius: 50%;
  border: 1px solid var(--border); background: transparent;
}
.level-dot.on { background: var(--accent); border-color: var(--accent); }

/* ---------- FOOTER ---------- */
.footer { background: var(--bg-dark); color: var(--text-muted-dark); padding: 72px 0 32px; margin-top: 120px; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 56px; margin-bottom: 48px; }
.footer__brand {
  font-family: var(--font-serif); font-style: italic; font-weight: 500;
  font-size: 28px; color: var(--text-light); margin-bottom: 16px;
}
.footer__desc { font-size: 14px; color: var(--text-muted-dark); line-height: 1.6; max-width: 380px; margin-bottom: 18px; }
.footer__copy {
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent); font-weight: 500;
}
.footer__col h4 { font-weight: 500; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 22px; }
.footer__col a {
  display: block; font-size: 14px; color: var(--text-muted-dark);
  text-decoration: none; margin-bottom: 12px; transition: color 0.2s;
  border-bottom: 1px solid transparent; padding-bottom: 2px;
  width: fit-content;
}
.footer__col a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.footer__bottom {
  padding-top: 28px; border-top: 1px solid rgba(245,241,236,0.1);
  font-size: 12px; color: var(--text-muted-dark);
  display: flex; justify-content: space-between; gap: 24px;
  letter-spacing: 0.5px;
}

@media (max-width: 900px) {
  .topnav__links { display: none; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 12px; }
}