/**
 * Chemistry Hub - Navbar Styles
 */

/* =====================================================
   Navbar
   ===================================================== */
.ch-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: hsl(0 0% 100% / 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid hsl(214 32% 91% / 0.5);
    width: 100%;
}

.ch-navbar-scrolled {
    box-shadow: var(--ch-shadow-soft);
}

.ch-navbar-hidden {
    transform: translateY(-100%);
}

.ch-navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.ch-navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.ch-navbar-logo img {
    height: 3.5rem;
    width: 3.5rem;
    object-fit: contain;
}

.ch-navbar-logo span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ch-primary);
}

.ch-navbar-links {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .ch-navbar-links {
        display: flex;
    }
}

.ch-navbar-link {
    color: hsl(222 47% 11% / 0.8);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
}

.ch-navbar-link:hover {
    color: var(--ch-primary);
}

.ch-navbar-cta {
    padding: 0.625rem 1.5rem;
}

.ch-navbar-mobile-btn {
    display: block;
    padding: 0.5rem;
    color: var(--ch-primary);
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 768px) {
    .ch-navbar-mobile-btn {
        display: none;
    }
}

.ch-navbar-mobile {
    display: none;
    background-color: var(--ch-card);
    border-bottom: 1px solid var(--ch-border);
    padding: 1rem 2rem;
}

.ch-navbar-mobile.active {
    display: block;
}

@media (min-width: 768px) {
    .ch-navbar-mobile {
        display: none !important;
    }
}

.ch-navbar-mobile a {
    display: block;
    padding: 0.5rem 0;
    color: hsl(222 47% 11% / 0.8);
    font-weight: 500;
    text-decoration: none;
}

.ch-navbar-mobile a:hover {
    color: var(--ch-primary);
}

/* Mobile Menu Overlay */
.ch-mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background-color: hsl(0 0% 0% / 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 40;
}

.ch-mobile-menu-overlay.ch-visible {
    opacity: 1;
    visibility: visible;
}

/* Mobile Menu */
.ch-mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--ch-card);
    z-index: 60;
    transition: right 0.3s ease;
    padding: 2rem;
    box-shadow: var(--ch-shadow-elevated);
}

.ch-mobile-menu.ch-mobile-menu-open {
    right: 0;
}

.ch-mobile-menu-close {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: none;
    border: none;
    color: var(--ch-primary);
    cursor: pointer;
    padding: 0.5rem;
}

body.ch-menu-open {
    overflow: hidden;
}