/* nav.css */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition:
    background var(--dur-3) var(--ease-out),
    border-bottom-color var(--dur-3) var(--ease-out);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}
.nav-scrolled {
  background: rgba(10, 10, 10, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  border-bottom: none !important;
}
.brand:hover { border-bottom: none !important; }
.brand-logo { height: 24px; width: auto; filter: brightness(0) invert(1); }
.brand-sep { width: 1px; height: 18px; background: var(--ink-700); }
.brand-geo {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 14px;
  font-stretch: 95%;
  color: var(--white);
  letter-spacing: -0.01em;
}
.brand-geo em { font-style: normal; font-weight: 400; color: var(--ink-400); }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > a {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink-200);
  font-weight: 500;
  border-bottom: none !important;
  transition: color var(--dur-2);
}
.nav-links > a:hover { color: var(--lime); border-bottom: none !important; }

.nav-actions { display: flex; gap: 10px; align-items: center; }

/* ====================== DROPDOWN (desktop) ====================== */

.nav-dd { position: relative; }

.nav-dd-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-200);
  background: none;
  border: none;
  padding: 6px 0;
  cursor: pointer;
  transition: color var(--dur-2) var(--ease-out);
}
.nav-dd-trigger:hover,
.nav-dd.open .nav-dd-trigger { color: var(--lime); }
.nav-dd-caret { transition: transform var(--dur-2) var(--ease-out); opacity: 0.8; stroke: currentColor; }
.nav-dd:hover .nav-dd-caret,
.nav-dd.open .nav-dd-caret { transform: rotate(180deg); }

.nav-dd-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 320px;
  padding: 10px;
  background: var(--white);
  border: 1px solid var(--ink-150);
  border-radius: var(--r-5);
  box-shadow: var(--shadow-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--dur-2) var(--ease-out),
    transform var(--dur-2) var(--ease-out),
    visibility var(--dur-2);
  z-index: 20;
}

.nav-dd-panel--tools {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px 12px;
  min-width: 640px;
  padding: 12px;
}
.nav-dd-panel--tools .nav-dd-eyebrow {
  grid-column: span 2;
}

/* мостик, чтобы курсор не «проваливался» между триггером и панелью */
.nav-dd-panel::before {
  content: '';
  position: absolute;
  top: -14px; left: 0; right: 0;
  height: 14px;
}
.nav-dd:hover .nav-dd-panel,
.nav-dd.open .nav-dd-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dd-eyebrow {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-400);
  padding: 8px 12px 6px;
}

.nav-dd-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r-3);
  border-bottom: none;
  transition: background var(--dur-2) var(--ease-out);
  position: relative;
}
.nav-dd-item:hover { background: var(--ink-50); border-bottom: none; }

.nav-dd-ico {
  flex: none;
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: var(--r-3);
  background: var(--ink-100);
  color: var(--ink-700);
  transition: background var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out);
}
.nav-dd-item:hover .nav-dd-ico {
  background: var(--lime-400);
  color: var(--accent);
}
.nav-dd-ico--lime { background: var(--lime-100); color: var(--accent); }

.nav-dd-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.nav-dd-title {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-950);
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.nav-dd-desc { font-size: 12.5px; color: var(--ink-500); line-height: 1.35; }

.nav-dd-badge {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--lime-400);
  padding: 2px 6px;
  border-radius: var(--r-pill);
  line-height: 1;
}

.nav-dd-go {
  flex: none;
  margin-left: auto;
  color: var(--ink-300);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out), color var(--dur-2);
}
.nav-dd-item:hover .nav-dd-go { opacity: 1; transform: translateX(0); color: var(--ink-700); }

/* ====================== BURGER ====================== */

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--ink-200);
  border-radius: var(--r-3);
  cursor: pointer;
  transition: border-color var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out);
}
.nav-burger:hover { border-color: var(--ink-300); background: var(--ink-50); }
.nav-burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--ink-950);
  border-radius: 2px;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-1) var(--ease-out);
  transform-origin: center;
}
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ====================== MOBILE MENU ====================== */

.mobile-menu { position: fixed; inset: 0; z-index: 200; }
.mobile-menu[hidden] { display: none; }

.mobile-menu-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.42);
  opacity: 0;
  transition: opacity var(--dur-3) var(--ease-out);
}
.mobile-menu.open .mobile-menu-backdrop { opacity: 1; }

.mobile-menu-panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(88vw, 380px);
  background: var(--white);
  box-shadow: var(--shadow-4);
  display: flex;
  flex-direction: column;
  padding: 76px 18px 20px;
  transform: translateX(100%);
  transition: transform var(--dur-3) var(--ease-drawer);
  overflow: hidden;
}
.mobile-menu.open .mobile-menu-panel { transform: translateX(0); }


.mm-close {
  position: absolute;
  top: 18px; right: 18px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: var(--r-3);
  border: 1px solid var(--ink-150);
  background: var(--white);
  color: var(--ink-700);
  cursor: pointer;
  transition: background var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
}
.mm-close:active { background: var(--ink-100); border-color: var(--ink-300); }

.mm-scroll { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; }

.mm-group { border-bottom: 1px solid var(--ink-150); }
.mm-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  font-stretch: 92%;
  letter-spacing: -0.02em;
  color: var(--ink-950);
  cursor: pointer;
  list-style: none;
}
.mm-summary::-webkit-details-marker { display: none; }
.mm-caret { color: var(--ink-400); transition: transform var(--dur-2) var(--ease-out); }
.mm-group[open] .mm-caret { transform: rotate(180deg); }

.mm-items { display: flex; flex-direction: column; gap: 4px; padding: 2px 0 14px; }
.mm-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 6px;
  border-radius: var(--r-3);
  border-bottom: none;
  transition: background var(--dur-2) var(--ease-out);
}
.mm-item:active { background: var(--ink-100); border-bottom: none; }
.mm-ico {
  flex: none;
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: var(--r-3);
  background: var(--ink-100);
  color: var(--ink-700);
}
.mm-ico--lime { background: var(--lime-100); color: var(--accent); }
.mm-item-text { display: flex; flex-direction: column; gap: 1px; }
.mm-item-title {
  font-size: 15px; font-weight: 600; color: var(--ink-950); letter-spacing: -0.01em;
  display: inline-flex; align-items: center; gap: 7px;
}
.mm-item-desc { font-size: 12.5px; color: var(--ink-500); line-height: 1.3; }

.mm-link {
  display: block;
  padding: 18px 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  font-stretch: 92%;
  letter-spacing: -0.02em;
  color: var(--ink-950);
  border-bottom: 1px solid var(--ink-150);
}
.mm-link:hover { border-bottom: 1px solid var(--ink-150); }

.mm-cta {
  width: 100%;
  justify-content: center;
  margin-top: 16px;
  flex: none;
}

/* ====================== RESPONSIVE ====================== */

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
}

@media (max-width: 600px) {
  .nav-inner { padding: 16px; gap: 12px; }
}
@media (max-width: 520px) {
  .nav-cta { display: none; }
}
@media (max-width: 380px) {
  .nav-inner { gap: 10px; }
  .brand { gap: 8px; }
  .brand-logo { height: 20px; }
  .brand-geo { font-size: 13px; }
  .nav-actions .btn { padding: 9px 13px; }
}

body.nav-locked { overflow: hidden; }

@media (prefers-reduced-motion: reduce) {
  .mobile-menu-panel,
  .nav-burger span,
  .nav-dd-go { transition-duration: 0.001ms !important; }
  /* без сдвига, но с мягким затуханием */
  .nav-dd-panel,
  .mobile-menu-backdrop {
    transition-property: opacity, visibility !important;
    transition-duration: var(--dur-2) !important;
  }
}