/* =====================================================
   NOTION-LIKE SIDEBAR NAVIGATION
   ===================================================== */

/* Container for the navigation - hidden by default */
span:has(#project-nav) {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    width: 250px;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    z-index: 100;
    pointer-events: none;
}

/* Show navigation when visible class is added */
span:has(#project-nav).visible {
    transform: translateX(0);
    pointer-events: auto;
}

/* The navigation itself */
#project-nav {
    position: absolute;
    right: 0;
    top: 35%;
    transform: translateY(-50%);
    width: 220px;
    max-height: 80vh;
    backdrop-filter: blur(100px);
    border-radius: 2px 0 0 2px;
    /* box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1); */
    padding: 20px;
    overflow-y: auto;
}


/* Navigation list styling */
#project-nav ul {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}

#project-nav ul li {
    width: 100%;
    line-height: 1.4em;
    margin: 0;
}

#project-nav ul li a {
    display: block;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--black);
    transition: all 0.2s ease;
    font-size: 0.95em;
    position: relative;
}

/* Hover effect */
#project-nav ul li a:hover {
    transform: translateX(-3px);
}

/* Active section indicator */
#project-nav ul li a.active {
    font-weight: 600;
}

#project-nav ul li a.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 100%;
    border-radius: 2px;
}

/* Hide scrollbar in navigation */
#project-nav::-webkit-scrollbar {
    width: 4px;
}

#project-nav::-webkit-scrollbar-track {
    background: transparent;
}

#project-nav::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 2px;
}

#project-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* Hide nav trigger area when image is zoomed */
body.image-zoomed span:has(#project-nav) {
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

/* =====================================================
   DESKTOP SPECIFIC (> 800px)
   ===================================================== */
@media screen and (min-width: 801px) {
    /* Subtle hint indicator near scrollbar */
    span:has(#project-nav)::before {
        content: '';
        position: absolute;
        right: 0;
        top: 0;
        transform: translateY(-50%);
        width: 3px;
        height: 60px;
        background: linear-gradient(to right, transparent, rgba(0, 0, 0, 0.1));
        border-radius: 2px 0 0 2px;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    /* Show hint on hover */
    #project-content:hover ~ span:has(#project-nav)::before,
    span:has(#project-nav):hover::before {
        opacity: 1;
    }
}

/* =====================================================
   MOBILE SPECIFIC (≤ 800px)
   ===================================================== */
@media screen and (max-width: 800px) {
    span:has(#project-nav) {
        width: 65%;
        max-width: 300px;
    }

    #project-nav {
        width: 100%;
        min-height: 100vh;
        right: 0;
        top: 0;
        transform: translateY(0%);
        border-radius: 2px 0 0 2px;
        padding: 0;
    }
    #project-nav ul {
        height: 95vh;
        padding: 10px 0;
    }

    /* Overlay background when nav is open */
    span:has(#project-nav).visible::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.3);
        z-index: -1;
        animation: fadeIn 0.3s ease;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* Swipe indicator on right edge */
    span:has(#project-nav)::before {
        content: '';
        position: fixed;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 20px;
        height: 100px;
        background: linear-gradient(to left, rgba(0, 0, 0, 0.05), transparent);
        border-radius: 4px 0 0 4px;
        pointer-events: none;
    }

    /* Make links larger for touch */
    #project-nav ul li a {
        padding: 12px 16px;
        font-size: 1em;
    }
}