.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 68px;
    display: flex;
    align-items: center;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 240ms var(--ease), border-color 240ms var(--ease), color 240ms var(--ease), backdrop-filter 240ms var(--ease);
}

.nav-row {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--text-on-dark);
    transition: color 240ms var(--ease);
}
.nav-brand .glyph { width: 26px; height: 26px; color: var(--violet-400); }
.nav-brand b {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav-menu a {
    position: relative;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text-on-dark-soft);
    transition: color 200ms var(--ease);
}
.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 200ms var(--ease);
}
.nav-menu a:hover { color: var(--text-on-dark); }
.nav-menu a:hover::after { transform: scaleX(1); }

.nav-right { display: flex; align-items: center; gap: 1rem; }

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 40px;
    padding: 0 1rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--r-btn);
    background: var(--ink-800);
    color: var(--text-on-dark);
    transition: background 240ms var(--ease), color 240ms var(--ease), transform 160ms var(--ease);
}
.nav-cta svg { width: 15px; height: 15px; transition: transform 200ms var(--ease); }
.nav-cta:hover { background: var(--ink-700); color: var(--violet-400); }
.nav-cta:hover svg { transform: translateX(3px); }

.navbar.scrolled {
    background: rgba(250, 248, 244, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--paper-line);
}
.navbar.scrolled .nav-brand { color: var(--text-on-light); }
.navbar.scrolled .nav-brand .glyph { color: var(--violet-700); }
.navbar.scrolled .nav-menu a { color: var(--text-on-light-soft); }
.navbar.scrolled .nav-menu a:hover { color: var(--text-on-light); }
.navbar.scrolled .nav-cta {
    background: var(--violet-700);
    color: #fff;
}
.navbar.scrolled .nav-cta:hover { background: var(--violet-600); color: #fff; transform: translateY(-1px); }
.navbar.scrolled .nav-toggle span { background: var(--text-on-light); }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    align-items: center;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-on-dark);
    border-radius: 2px;
    transition: transform 240ms var(--ease), opacity 240ms var(--ease), background 240ms var(--ease);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
    .nav-menu {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        padding: 1rem 1.5rem 1.5rem;
        background: var(--paper);
        border-bottom: 1px solid var(--paper-line);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: transform 240ms var(--ease), opacity 240ms var(--ease);
    }
    .nav-menu.active { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-menu a { color: var(--text-on-light-soft); padding: 0.6rem 0; font-size: 1.05rem; width: 100%; }
    .nav-menu a::after { display: none; }
    .nav-toggle { display: flex; }
    .nav-cta { display: none; }
}