/* Topbar */
.top {
  max-width: var(--container);
  margin: 0 auto;
  padding: 30px var(--gutter) 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

:root {
  --home-logo-desktop-width: clamp(280px, 33vw, 280px);
  --home-logo-optical-shift: clamp(4px, 0.45vw, 10px);
  --home-logo-hero-gap: clamp(20px, 2.5vw, 34px);
}

.logo-wrap {
  position: relative;
  display: inline-block;
}

.logo {
  width: clamp(304px, 22vw, 356px);
  height: auto;
  object-fit: contain;
  display: block;
  position: relative;
  z-index: 1;
}

.logo[src*="assets/1.png"] {
  filter: brightness(1.08) saturate(0.9) contrast(1.03);
}

.nav {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(10, 10, 18, 0.7);
  border: 1px solid var(--stroke);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.nav a {
  color: rgba(232, 234, 246, 0.78);
  text-decoration: none;
  font-size: var(--fs-sm);
  letter-spacing: 0.2px;
  padding: 8px 12px;
  border-radius: 999px;
}

.nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.navBtn {
  --magnet-x: 0px;
  --magnet-y: 0px;
  --lift: 0px;
  --press: 1;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--text) !important;
  font-weight: 600;
  transform: translate(var(--magnet-x), var(--magnet-y)) translateY(var(--lift)) scale(var(--press));
  transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
  will-change: transform;
}

.navBtn:hover {
  --lift: -1px;
  background: rgba(255, 255, 255, 0.1);
}

/* Language toggle */
.langToggle {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.navLang {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 0 6px;
  height: 46px;
  line-height: 46px;
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.2px;
  border-radius: 8px;
  transition: color 0.4s ease, text-shadow 0.4s ease, opacity 0.4s ease;
}

.navLang:hover,
.navLang:focus-visible {
  color: rgba(255, 40, 40, 1);
  background-image: linear-gradient(
    90deg,
    rgba(255, 30, 30, 0.85) 0%,
    rgba(255, 20, 20, 1) 50%,
    rgba(255, 30, 30, 0.85) 100%
  );
  background-size: 200% 100%;
  background-position: 0 50%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: navWave 3.6s ease-in-out infinite;
  text-shadow: 0 0 18px rgba(255, 40, 40, 0.9);
}

.navLang.isActive {
  color: rgba(255, 180, 180, 0.9);
}

/* Hover nav */
.brand-home {
  display: inline-flex;
  align-items: center;
  padding: 6px 0;
  text-decoration: none;
  color: inherit;
  margin-left: 0;
}

.hover-nav {
  position: relative;
  margin-left: auto;
  z-index: 1200;
  display: flex;
  align-items: center;
  --nav-icon-mask: url("../assets/logo_icon_grade.png");
}

.hover-nav-trigger {
  position: relative;
  z-index: 2;
  width: 42px;
  height: 42px;
  border-radius: var(--frame-radius-sm);
  border: 1px solid rgba(245, 247, 250, 0.16);
  background: rgba(10, 10, 16, 0.72);
  box-shadow: 0 10px 18px rgba(0, 0, 0, 0.32);
  display: grid;
  place-items: center;
  cursor: pointer;
  list-style: none;
  padding: 0;
  text-decoration: none;
  appearance: none;
  transition: transform 0.25s ease-in-out, border-color 0.25s ease-in-out, box-shadow 0.25s ease-in-out;
}

.hover-nav-trigger img {
  width: 62%;
  height: 62%;
  object-fit: contain;
  display: block;
  opacity: 0.78;
}

.hover-nav-trigger::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: var(--frame-radius-lg);
  background: radial-gradient(closest-side, rgba(255, 45, 45, 0.45), transparent 70%);
  opacity: 0.24;
  filter: blur(6px);
  pointer-events: none;
  animation: navPulse 8s ease-in-out infinite;
}

.hover-nav-trigger::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--frame-radius-sm);
  background: linear-gradient(
    90deg,
    rgba(255, 45, 45, 0.3) 0%,
    rgba(255, 45, 45, 0.9) 50%,
    rgba(255, 45, 45, 0.3) 100%
  );
  background-size: 200% 100%;
  opacity: 0.54;
  -webkit-mask-image: var(--nav-icon-mask);
  mask-image: var(--nav-icon-mask);
  -webkit-mask-size: 70% 70%;
  mask-size: 70% 70%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  mix-blend-mode: screen;
  filter: blur(0.8px);
  pointer-events: none;
  animation: navWave 8s ease-in-out infinite;
}

.hover-nav.is-open .hover-nav-trigger::before {
  opacity: 0.75;
}

.hover-nav.is-open .hover-nav-trigger::after {
  opacity: 1;
  animation-duration: 4.2s;
}


.hover-nav-trigger:hover,
.hover-nav:hover .hover-nav-trigger {
  transform: translateY(-1px);
  border-color: var(--frame-border-strong);
  box-shadow: var(--frame-shadow-hover), var(--glow-magenta-soft);
}

.hover-nav-trigger:focus-visible {
  outline: 2px solid var(--accent-magenta-focus);
  outline-offset: 4px;
}

.hover-nav-trigger:hover::before,
.hover-nav:hover .hover-nav-trigger::before {
  opacity: 0.9;
}

.hover-nav-trigger:hover::after,
.hover-nav:hover .hover-nav-trigger::after {
  opacity: 0.95;
  animation-duration: 4.2s;
}

.hover-nav.is-open .hover-nav-trigger {
  transform: translateY(-1px);
  border-color: var(--frame-border-strong);
  box-shadow: var(--frame-shadow-hover), var(--glow-magenta-soft);
}

.hover-nav-panel {
  position: absolute;
  z-index: 1;
  top: 50%;
  right: calc(100% + 12px);
  height: 46px;
  width: max-content;
  max-width: calc(100vw - 120px);
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 8px;
  padding: 0 4px;
  border: none;
  background: transparent;
  box-shadow: none;
  opacity: 0;
  transform: translateY(-50%) translateX(26px);
  transform-origin: right center;
  pointer-events: none;
  visibility: hidden;
  white-space: nowrap;
  transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out, visibility 0s linear 0.6s;
  transition-delay: 0s;
  will-change: transform, opacity;
}

.hover-nav-panel::before {
  content: "";
  position: absolute;
  left: 100%;
  top: -28px;
  bottom: -28px;
  width: 56px;
}

.hover-nav-panel a {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 46px;
  line-height: 46px;
  color: rgba(232, 234, 246, 0.78);
  text-decoration: none;
  font-size: var(--fs-sm);
  letter-spacing: 0.2px;
  padding: 0 3px;
  border-radius: 8px;
  background: transparent;
  border: none;
  opacity: 0;
  transform: translateX(26px);
  white-space: nowrap;
  transition: color 0.6s ease-in-out, opacity 0.6s ease-in-out, transform 0.6s ease-in-out, text-shadow 0.6s ease-in-out;
  will-change: transform, opacity;
}

.hover-nav-panel a:focus-visible {
  outline: 2px solid var(--accent-magenta-focus);
  outline-offset: 6px;
}

.hover-nav-panel a:nth-of-type(1) { --nav-delay: 0.02s; }
.hover-nav-panel a:nth-of-type(2) { --nav-delay: 0.04s; }
.hover-nav-panel a:nth-of-type(3) { --nav-delay: 0.06s; }
.hover-nav-panel a:nth-of-type(4) { --nav-delay: 0.08s; }
.hover-nav-panel a:nth-of-type(5) { --nav-delay: 0.10s; }
.hover-nav-panel a:nth-of-type(6) { --nav-delay: 0.12s; }
.hover-nav-panel .hover-nav-lang { --nav-delay: 0.14s; }

.hover-nav-panel .hover-nav-lang {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-left: auto;
  padding-left: 8px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  height: 46px;
  opacity: 0;
  transform: translateX(26px);
  transition: opacity 0.6s ease-in-out, transform 0.6s ease-in-out, text-shadow 0.6s ease-in-out;
  will-change: transform, opacity;
}

.hover-nav.is-open .hover-nav-panel {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
  pointer-events: auto;
  visibility: visible;
  transition-delay: 0s;
}

.hover-nav.is-open .hover-nav-panel a,
.hover-nav.is-open .hover-nav-panel .hover-nav-lang {
  opacity: 1;
  transform: translateX(0);
}

.hover-nav.is-open .hover-nav-panel a:not(:hover):not(:focus-visible) {
  color: var(--muted);
  background-image: none;
  -webkit-text-fill-color: currentColor;
  animation: none;
  text-shadow: none;
}

.hover-nav-panel a:hover,
.hover-nav-panel a:focus-visible {
  color: rgba(255, 40, 40, 1);
  background-image: linear-gradient(
    90deg,
    rgba(255, 30, 30, 0.85) 0%,
    rgba(255, 20, 20, 1) 50%,
    rgba(255, 30, 30, 0.85) 100%
  );
  background-size: 200% 100%;
  background-position: 0 50%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: navWave 3.6s ease-in-out infinite;
  text-shadow: 0 0 18px rgba(255, 40, 40, 0.9);
}

@media (max-width: 980px) {
  .top {
    padding: 22px var(--gutter) 14px;
    flex-wrap: wrap;
    align-items: flex-start;
    row-gap: 12px;
  }

  .hover-nav {
    width: auto;
    min-width: 46px;
    margin-left: auto;
    flex-direction: column;
    align-items: flex-end;
  }

  .hover-nav-panel {
    position: static;
    top: auto;
    right: auto;
    width: min(92vw, 332px);
    max-width: 100%;
    height: auto;
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    gap: 5px;
    margin-top: 0;
    padding: 0;
    background: var(--frame-surface-strong);
    border: 0;
    border-radius: var(--frame-radius-lg);
    box-shadow: none;
    backdrop-filter: blur(10px);
    transform: translateY(-8px);
    transform-origin: top right;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 0.22s ease-out,
      transform 0.22s ease-out,
      max-height 0.24s ease-out;
    contain: layout paint;
  }
  .hover-nav-panel::before {
    display: none;
  }
  .hover-nav-panel a {
    width: 100%;
    height: 43px;
    line-height: 43px;
    justify-content: flex-start;
    padding: 0 12px;
    transition: opacity 0.2s ease-out, transform 0.2s ease-out, color 0.2s ease-out;
  }
  .hover-nav.is-open .hover-nav-panel {
    transform: translateY(0);
    max-height: 520px;
    margin-top: 8px;
    padding: 9px 10px;
    border: 1px solid var(--frame-border);
    box-shadow: var(--frame-shadow-hover);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .hover-nav-panel .hover-nav-lang {
    width: 100%;
    justify-content: center;
    padding-left: 0;
    border-left: none;
    margin-left: 0;
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
  }
}

@keyframes navPulse {
  0% { opacity: 0.55; }
  50% { opacity: 0.95; }
  100% { opacity: 0.55; }
}

@keyframes navWave {
  0% { background-position: -60% 45%; }
  35% { background-position: 10% 55%; }
  65% { background-position: 60% 48%; }
  100% { background-position: -60% 45%; }
}

@media (min-width: 981px) {
  .top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      ". nav"
      "brand brand";
    align-items: center;
    column-gap: clamp(16px, 2vw, 28px);
    row-gap: clamp(14px, 2vw, 30px);
    padding: clamp(24px, 2.8vw, 40px) clamp(20px, 2.8vw, 36px) var(--home-logo-hero-gap) var(--gutter);
  }

  .brand {
    grid-area: brand;
    justify-self: center;
    transform: translate3d(var(--home-logo-optical-shift), clamp(0px, 0.3vw, 4px), 0);
  }

  .brand-home {
    padding: 0;
  }

  .logo {
    width: var(--home-logo-desktop-width);
  }

  .hover-nav {
    grid-area: nav;
    justify-self: end;
    margin-left: 0;
    align-self: start;
    transform: translate(6px, -10px) scale(0.9);
  }
}

@media (min-width: 1100px) {
  .top {
    padding-left: 56px;
  }
}

@media (max-width: 1024px) {
  .logo { width: clamp(272px, 31vw, 320px); }
}

@media (max-width: 860px) {
  .logo { width: clamp(242px, 36vw, 286px); }
}

@media (max-width: 720px) {
  .top {
    padding: 18px var(--gutter) 12px;
    flex-wrap: nowrap;
    align-items: flex-start;
    row-gap: 10px;
  }
  .logo { width: clamp(228px, 62vw, 252px); }
  .brand-home { margin-left: 0; }
  .hover-nav-trigger { width: 40px; height: 40px; border-radius: var(--frame-radius-sm); }
  .hover-nav-panel { width: min(94vw, 304px); }

  .top {
    position: relative;
    justify-content: flex-end;
  }

  .brand {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin-inline: 0;
  }

  .hover-nav {
    position: relative;
    top: auto;
    right: auto;
  }
}

@media (max-width: 560px) {
  .hover-nav-panel {
    width: min(96vw, 288px);
    gap: 5px;
  }
  .hover-nav.is-open .hover-nav-panel {
    padding: 10px;
  }
  .hover-nav-panel a {
    height: 42px;
    line-height: 42px;
    font-size: 13px;
  }
  .navLang {
    height: 38px;
    line-height: 38px;
    font-size: 13px;
  }
}

@media (max-width: 520px) {
  .top { padding: 16px var(--gutter) 10px; }
  .logo { width: clamp(196px, 56vw, 214px); }
  .brand-home { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hover-nav-trigger,
  .hover-nav-panel,
  .hover-nav-panel a,
  .hover-nav-panel .hover-nav-lang {
    transition: none;
    animation: none;
  }
}