/* ============================================================
   1. Nav — fixed glass pill bar
   ============================================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0.9rem clamp(0.9rem, 3vw, 2rem);
    pointer-events: none;              /* inner pills re-enable */
}

.nav__inner {
    max-width: 1240px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.8rem;
}
.nav__inner > * { pointer-events: auto; }

/* --- brand pill --- */
.nav__logo {
    text-decoration: none;
    flex-shrink: 0;
}
.nav__logo-text {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.55rem 1.3rem;
    direction: ltr;                     /* wordmark reads L→R in every language */
}
.nav__logo-name {
    font-weight: 800;
    font-size: 1.18rem;
    letter-spacing: 0.01em;
    color: var(--ink);
    line-height: 1.1;
}
.nav__logo-sub {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.06em;
    line-height: 1.2;
}

/* --- links bar --- */
.nav__bar { flex: 0 1 auto; min-width: 0; }
.nav__bar-glass { border-radius: var(--r-pill); }
.nav__bar-body { padding: 0.35rem 0.55rem; }

.nav__links {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav__link {
    display: inline-block;
    padding: 0.55rem 1.05rem;
    border-radius: var(--r-pill);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--ink);
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.35s var(--ease-smooth), color 0.35s var(--ease-smooth);
}
.nav__link:hover { background: rgba(11, 18, 32, 0.07); }
.nav__link.is-active {
    background: rgba(31, 122, 224, 0.13);
    color: var(--accent);
    font-weight: 600;
}
.nav__link--cta {
    background: linear-gradient(135deg, var(--accent), var(--accent-soft));
    color: #ffffff !important;
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(31, 122, 224, 0.3);
}
.nav__link--cta:hover { background: linear-gradient(135deg, var(--accent), var(--accent-soft)); filter: brightness(1.06); }

/* --- burger (compact mode) --- */
.nav__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 46px;
    height: 46px;
    padding: 0 12px;
    border: none;
    border-radius: var(--r-pill);
    background: transparent;
    cursor: pointer;
}
.nav__burger span {
    display: block;
    height: 2.4px;
    border-radius: 2px;
    background: var(--ink);
    transition: transform 0.4s var(--ease-spring), opacity 0.3s ease;
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.4px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.4px) rotate(-45deg); }

/* compact mode: burger visible, links become dropdown column */
.nav--compact .nav__burger { display: flex; }
.nav--compact .nav__bar-glass {
    /* the dropdown lives inside the pill — without this the pill's
       overflow:hidden (from .glass) clips the open menu invisible */
    overflow: visible;
}
.nav--compact .nav__links {
    /* centered under the nav, viewport-relative */
    position: fixed;
    top: 5.4rem;
    inset-inline: 0;
    margin-inline: auto;
    width: min(320px, calc(100vw - 2rem));
    flex-direction: column;
    align-items: stretch;
    padding: 0.6rem;
    border-radius: var(--r-panel);
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
            backdrop-filter: blur(22px) saturate(150%);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.6);
    opacity: 0;
    transform: translateY(-8px);
    visibility: hidden;
    transition: opacity 0.35s var(--ease-reveal), transform 0.35s var(--ease-reveal), visibility 0s linear 0.35s;
}
.nav--compact .nav__bar { position: relative; }
.nav--compact.nav--open .nav__links {
    opacity: 1;
    transform: none;
    visibility: visible;
    transition-delay: 0s;
}
.nav--compact .nav__link { display: block; text-align: center; }

/* while JS toggles classes to measure the nav, no transitions may run —
   otherwise the dropdown fades visibly (ghost menu) on every re-measure */
.nav--measuring .nav__links,
.nav--measuring .nav__link,
.nav--measuring .nav__burger span {
    transition: none !important;
}

/* scrolled state: heavier frost so it reads over content */
.nav--scrolled .glass__frost {
    -webkit-backdrop-filter: blur(34px) saturate(160%);
            backdrop-filter: blur(34px) saturate(160%);
}
.nav--scrolled .glass__tint { background: rgba(255, 255, 255, 0.62); }

/* --- language switcher --- */
.lang { position: relative; flex-shrink: 0; }
.lang__toggle {
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
    border-radius: var(--r-pill);
}
.lang__toggle-body {
    gap: 0.45rem;
    padding: 0.72rem 1.05rem;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--ink);
}
.lang__chev {
    width: 14px;
    height: 14px;
    transition: transform 0.4s var(--ease-spring);
}
.lang.is-open .lang__chev { transform: rotate(180deg); }

.lang__menu {
    position: absolute;
    top: calc(100% + 0.6rem);
    inset-inline-end: 0;
    margin: 0;
    padding: 0.45rem;
    list-style: none;
    min-width: 150px;
    border-radius: var(--r-panel);
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
            backdrop-filter: blur(22px) saturate(150%);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.6);
    opacity: 0;
    transform: translateY(-8px);
    visibility: hidden;
    transition: opacity 0.35s var(--ease-reveal), transform 0.35s var(--ease-reveal), visibility 0s linear 0.35s;
}
.lang.is-open .lang__menu {
    opacity: 1;
    transform: none;
    visibility: visible;
    transition-delay: 0s;
}
.lang__opt {
    display: block;
    width: 100%;
    padding: 0.55rem 0.9rem;
    border: none;
    border-radius: var(--r-pill);
    background: transparent;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--ink);
    text-align: start;
    cursor: pointer;
    transition: background 0.3s var(--ease-smooth);
}
.lang__opt:hover { background: rgba(11, 18, 32, 0.07); }
.lang__opt.is-active {
    background: rgba(31, 122, 224, 0.13);
    color: var(--accent);
    font-weight: 700;
}

@media (max-width: 560px) {
    .nav__logo-sub { display: none; }
    .nav__logo-text { padding: 0.62rem 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    .nav__links, .lang__menu, .nav__burger span, .lang__chev { transition: none; }
}