/* In-Page Navigation Styles - Enhanced Aesthetic Design */

/* Main navigation container */
#page-nav {
    position: fixed;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    max-height: 70vh;
}

/* When visible */
#page-nav.visible {
    opacity: 1;
    pointer-events: auto;
}

/* The actual navigation panel - Beautiful & Clean */
.page-nav-inner {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    padding: 1.25rem 0.3rem 1.25rem 0.8rem;
    border-radius: 0 16px 16px 0;
    box-shadow: 0 4px 24px -4px rgba(13, 71, 161, 0.12),
                0 8px 16px -8px rgba(13, 71, 161, 0.08),
                inset 0 1px 0 rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(13, 71, 161, 0.1);
    border-left: 3px solid rgba(13, 71, 161, 0.4);
    width: 156px;
    transform: translateX(0);
    transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    max-height: 70vh;
    overflow-y: auto;
    overflow-x: hidden;
}

/* Custom scrollbar for navigation */
.page-nav-inner::-webkit-scrollbar {
    width: 4px;
}

.page-nav-inner::-webkit-scrollbar-track {
    background: rgba(13, 71, 161, 0.05);
    border-radius: 4px;
}

.page-nav-inner::-webkit-scrollbar-thumb {
    background: rgba(13, 71, 161, 0.2);
    border-radius: 4px;
}

.page-nav-inner::-webkit-scrollbar-thumb:hover {
    background: rgba(13, 71, 161, 0.3);
}

/* When collapsed */
#page-nav.collapsed .page-nav-inner {
    width: 0;
    padding-left: 0;
    padding-right: 0;
    opacity: 0;
    transform: translateX(-156px);
    box-shadow: none;
    background: transparent;
    backdrop-filter: blur(0);
    border-left: none;
}

/* Navigation list */
#page-nav .page-nav-list {
    margin: 0;
    padding: 0;
    list-style: none;
    min-width: 135px;
    opacity: 1;
    transition: opacity 0.5s ease;
}

#page-nav.collapsed .page-nav-list {
    opacity: 0;
}

/* Navigation list items - Increased spacing for taller design */
#page-nav .page-nav-list li {
    margin-bottom: 0.5rem;
}

#page-nav .page-nav-list li:last-child {
    margin-bottom: 0;
}

/* Navigation links - Enhanced Design with more height */
#page-nav .nav-link {
    position: relative;
    gap: 0.5rem;
    padding: 0.6rem 0.3rem 0.6rem 0.4rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Navigation indicator - Beautiful accent */
#page-nav .nav-indicator {
    width: 1.2rem;
    height: 0.2rem;
    border-radius: 4px;
    background: linear-gradient(90deg, rgba(73, 84, 104, 0.4), rgba(73, 84, 104, 0.25));
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

#page-nav .nav-link:hover .nav-indicator {
    width: 1.5rem;
    background: linear-gradient(90deg, rgba(13, 71, 161, 0.7), rgba(13, 71, 161, 0.5));
    box-shadow: 0 2px 4px rgba(13, 71, 161, 0.2);
}

.nav-link.active .nav-indicator {
    width: 1.75rem;
    background: linear-gradient(90deg, #0d47a1, #1976d2);
    box-shadow: 0 2px 6px rgba(13, 71, 161, 0.3);
}

/* Navigation text - Clean & Professional with better sizing */
#page-nav .nav-text {
    font-size: 0.875rem;
    color: #4a5568;
    line-height: 1.4;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100px;
    word-break: normal;
    hyphens: none;
}

#page-nav .nav-link:hover .nav-text {
    color: #0d47a1;
    transform: translateX(2px);
}

.nav-link.active .nav-text {
    color: #0d47a1;
    font-weight: 600;
}

/* Link background on hover/active - Subtle & Elegant */
#page-nav .nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 8px;
    background: linear-gradient(90deg, rgba(13, 71, 161, 0.06), rgba(13, 71, 161, 0.02));
    opacity: 0;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: -1;
}

#page-nav .nav-link:hover::before {
    opacity: 1;
}

.nav-link.active::before {
    opacity: 1;
    background: linear-gradient(90deg, rgba(13, 71, 161, 0.1), rgba(13, 71, 161, 0.04));
}

/* Toggle button - Modern & Clean - Taller to match */
#page-nav-toggle {
    position: absolute;
    top: 50%;
    left: 156px;
    transform: translateY(-50%);
    width: 32px;
    height: 64px;
    border-radius: 0 14px 14px 0;
    background: linear-gradient(135deg, rgba(13, 71, 161, 0.1) 0%, rgba(13, 71, 161, 0.08) 100%);
    color: #0d47a1;
    border: 1px solid rgba(13, 71, 161, 0.15);
    border-left: none;
    box-shadow: 4px 4px 20px -8px rgba(13, 71, 161, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: left 0.6s cubic-bezier(0.165, 0.84, 0.44, 1),
                background 0.3s ease,
                color 0.3s ease,
                border-color 0.3s ease,
                box-shadow 0.3s ease,
                transform 0.3s ease;
    z-index: 10;
}

/* Toggle button when collapsed */
#page-nav.collapsed #page-nav-toggle {
    left: 0;
}

#page-nav-toggle:hover,
#page-nav-toggle:focus {
    background: linear-gradient(135deg, rgba(13, 71, 161, 0.14) 0%, rgba(13, 71, 161, 0.11) 100%);
    color: #0a2c63;
    border-color: rgba(13, 71, 161, 0.22);
    box-shadow: 4px 4px 24px -8px rgba(13, 71, 161, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transform: translateY(-50%) scale(1.02);
}

#page-nav-toggle:active {
    transform: translateY(-50%) scale(0.98);
}

#page-nav-toggle:focus-visible {
    outline: 2px solid #ff8f00;
    outline-offset: 2px;
}

/* Toggle icon (arrow) - Smooth Animation */
#page-nav-toggle .toggle-icon {
    font-size: 1.1rem;
    line-height: 1;
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
    display: block;
    font-weight: 600;
}

#page-nav.visible:not(.collapsed) #page-nav-toggle .toggle-icon {
    transform: rotate(180deg);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 120px;
}

/* Font smoothing for crisp text */
#page-nav,
#page-nav *,
#page-nav *::before,
#page-nav *::after {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Responsive adjustments for smaller screens */
@media (max-width: 1280px) {
    #page-nav {
        left: 0;
    }
}

/* Ensure navigation doesn't interfere with content */
@media (min-width: 1024px) {
    body {
        padding-left: 0;
    }
}

/* Ensure navigation is properly positioned and doesn't block content */
@media (max-height: 800px) {
    #page-nav {
        max-height: 60vh;
    }
    
    .page-nav-inner {
        max-height: 60vh;
    }
}