/* Modern Enhanced Navbar - Clean & Professional Design */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --nav-bg: #ffffff;
    --nav-border: #e5e7eb;
    --nav-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --nav-text: #4b5563;
    --nav-hover: #f3f4f6;
    --nav-active-bg: #4f46e5;
    --nav-active-text: #ffffff;
    --nav-icon: #6b7280;
    --nav-accent: #4f46e5;
}

/* Dark mode variant (optional - uncomment to use) */
/*
:root {
    --nav-bg: #1f2937;
    --nav-border: #374151;
    --nav-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --nav-text: #d1d5db;
    --nav-hover: #374151;
    --nav-active-bg: #4f46e5;
    --nav-active-text: #ffffff;
    --nav-icon: #9ca3af;
    --nav-accent: #6366f1;
}
*/

/* Main Navbar */
#mainNavbar {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: var(--nav-shadow);
    padding: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    position: sticky;
    top: 0;
    z-index: 1000;
}

#mainNavbar.scrolled {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Container */
#mainNavbar .container-fluid {
    padding: 0 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Navigation List */
.navbar-nav {
    align-items: center;
    height: 64px;
}

/* Navigation Links */
.navbar-nav .nav-link {
    color: var(--nav-text) !important;
    font-size: 15px;
    font-weight: 500;
    padding: 0.5rem 0.875rem !important;
    margin: 0 0.125rem;
    border-radius: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
    height: 36px;
    position: relative;
    white-space: nowrap;
}

.navbar-nav .nav-link i {
    font-size: 16px;
    color: var(--nav-icon);
    transition: all 0.2s ease;
    width: 18px;
    text-align: center;
}

/* Hover State */
.navbar-nav .nav-link:hover {
    background: var(--nav-hover);
    color: var(--nav-accent) !important;
}

.navbar-nav .nav-link:hover i {
    color: var(--nav-accent);
    transform: translateY(-1px);
}

/* Active State */
.navbar-nav .nav-link.active {
    background: var(--nav-hover);
    color: var(--nav-accent) !important;
    font-weight: 600;
}

.navbar-nav .nav-link.active i {
    color: var(--nav-accent);
}

/* Subtle active indicator */
.navbar-nav .nav-link.active::before {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 10px;
    right: 10px;
    height: 2px;
    background: var(--nav-accent);
    border-radius: 2px 2px 0 0;
}

/* Dropdown Menu */
.navbar-nav .dropdown-menu {
    background: var(--nav-bg);
    border: 1px solid var(--nav-border);
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    padding: 4px;
    margin-top: 8px;
    min-width: 200px;
    animation: dropdownFade 0.2s ease;
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--nav-text);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.dropdown-item:hover {
    background: var(--nav-hover);
    color: var(--nav-accent);
}

.dropdown-item i {
    font-size: 14px;
    width: 16px;
    text-align: center;
    color: var(--nav-icon);
}

.dropdown-item:hover i {
    color: var(--nav-accent);
}

/* Dropdown Toggle Arrow */
.dropdown-toggle::after {
    font-size: 10px;
    margin-left: 4px;
    vertical-align: 1px;
}

/* Right Side Navigation Items */
.navbar-nav.ms-auto {
    border-left: 1px solid var(--nav-border);
    padding-left: 1rem;
    margin-left: 1rem;
}

/* Special Buttons */
.navbar-nav .nav-link[target="_blank"] {
    color: var(--nav-text) !important;
}

.navbar-nav .nav-link[target="_blank"]:hover {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981 !important;
}

.navbar-nav .nav-link[target="_blank"]:hover i {
    color: #10b981;
}

/* Logout Button */
.navbar-nav .nav-link[href*="logout"] {
    color: var(--nav-text) !important;
}

.navbar-nav .nav-link[href*="logout"]:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444 !important;
}

.navbar-nav .nav-link[href*="logout"]:hover i {
    color: #ef4444;
}

/* Mobile Toggle Button */
.navbar-toggler {
    border: 1px solid var(--nav-border);
    padding: 6px 10px;
    border-radius: 6px;
    transition: all 0.2s ease;
    margin: 10px 0;
}

.navbar-toggler:hover {
    background: var(--nav-hover);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    outline: none;
}

.navbar-toggler-icon {
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%234b5563' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Responsive Design */
@media (max-width: 991px) {
    .navbar-nav {
        height: auto;
        padding: 1rem 0;
    }
    
    .navbar-collapse {
        border-top: 1px solid var(--nav-border);
        margin-top: 0.5rem;
        padding-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.625rem 1rem !important;
        margin: 2px 0;
        border-radius: 6px;
    }
    
    .navbar-nav .nav-link.active::before {
        display: none;
    }
    
    .navbar-nav.ms-auto {
        border-left: none;
        border-top: 1px solid var(--nav-border);
        padding-left: 0;
        margin-left: 0;
        margin-top: 1rem;
        padding-top: 1rem;
    }
    
    .dropdown-menu {
        position: static !important;
        transform: none !important;
        box-shadow: none;
        border: none;
        background: var(--nav-hover);
        margin: 4px 0 8px 28px;
        padding: 4px 8px;
    }
}

/* Smooth transitions */
* {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Optional: Loading bar under active item */
@keyframes loadingBar {
    0% { width: 0; }
    100% { width: 100%; }
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--nav-accent);
    animation: loadingBar 0.3s ease forwards;
}

/* Hide text on very small screens */
@media (max-width: 400px) {
    .navbar-nav .nav-link span {
        display: none;
    }
    
    .navbar-nav .nav-link {
        padding: 0.5rem !important;
        justify-content: center;
    }
    
    .navbar-nav .nav-link i {
        font-size: 18px;
    }
}

/* Optional notification badge */
.nav-notification {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: #ef4444;
    border-radius: 50%;
    border: 2px solid var(--nav-bg);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.1);
        opacity: 0.7;
    }
}

/* Focus states for accessibility */
.navbar-nav .nav-link:focus-visible {
    outline: 2px solid var(--nav-accent);
    outline-offset: 2px;
}

/* Smooth page scroll */
html {
    scroll-behavior: smooth;
}

/* Brand/Logo area if needed */
.navbar-brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--nav-text) !important;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    margin-right: 2rem;
    transition: all 0.2s ease;
}

.navbar-brand:hover {
    color: var(--nav-accent) !important;
}

.navbar-brand img {
    height: 32px;
    width: auto;
}