/* styles/navbar.css */

.top-nav {
    --nav-height: 70px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(20, 20, 30, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.top-nav.scrolled {
    --nav-height: 60px;
    background: rgba(20, 20, 30, 0.75);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-logo {
    display: flex;
    align-items: center;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
}

.nav-logo img {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.nav-logo:hover {
    transform: scale(1.08);
}

.top-nav-list {
    display: flex;
    list-style: none;
    gap: 12px;
    margin: 0 20px 0 auto; /* Move to right and add gap before hamburger */
    padding: 0;
    align-items: center;
}

.top-nav-item {
    position: relative;
}

.top-nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 4px;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.2px;
    display: block;
    position: relative;
}

.top-nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.top-nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    font-weight: 600;
}

/* Underline indicator base */
.top-nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 18px;
    right: 18px;
    height: 2px;
    background: rgb(0, 162, 255);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

/* Animate underline on active and hover */
.top-nav-link.active::after {
    transform: scaleX(1);
}

.top-nav-link:hover::after {
    transform: scaleX(1);
    opacity: 0.6;
}

.top-nav-link.active:hover::after {
    opacity: 1;
}

.sidebar-toggle-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    width: 42px;
    height: 42px;
    cursor: pointer;
    display: flex; /* Always visible */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 0;
}

.sidebar-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(0, 162, 255, 0.4);
}

.sidebar-toggle-btn:active {
    transform: scale(0.92);
}

.hamburger-line {
    width: 22px;
    height: 2px;
    background-color: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Sharp lines for the hamburger */
.sidebar-toggle-btn .hamburger-line {
    display: block;
}

.sidebar-toggle-btn:hover .hamburger-line {
    background-color: rgb(0, 162, 255);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .top-nav {
        padding: 0 24px;
    }
    
    .top-nav-list {
        display: none; /* Hide on mobile/tablet, use sidebar instead */
    }
    
    /* .sidebar-toggle-btn is now always display: flex */
}

@media (max-width: 480px) {
    .top-nav {
        padding: 0 16px;
    }
    
    .nav-logo img {
        height: 30px;
    }
}