/* 
 * USKM Main Portal Custom CSS Stylesheets
 * Incorporates glassmorphism, animations, skeleton loadings, and interactive transitions
 */

/* Utility Classes - Hiding scrollbars for horizontal scrolling */
.hide-scroll::-webkit-scrollbar { 
    display: none; 
}
.hide-scroll { 
    -ms-overflow-style: none; 
    scrollbar-width: none; 
}

/* Glassmorphism Effects */
.glass-nav {
    background: rgba(11, 19, 43, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.glass-card {
    background: rgba(28, 37, 65, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 195, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 195, 0, 0.5);
    box-shadow: 0 20px 40px -15px rgba(255, 195, 0, 0.15);
}

/* Dropdown Menu Desktop CSS */
.dropdown-menu {
    visibility: hidden;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.group:hover .dropdown-menu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Bottom Nav Bar style */
.bottom-nav {
    background: rgba(11, 19, 43, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: env(safe-area-inset-bottom);
}

.nav-item.active { 
    color: #FFC300; 
}

.nav-item.active .nav-indicator { 
    opacity: 1; 
    transform: translateY(0) scale(1); 
}

.nav-indicator {
    opacity: 0;
    transform: translateY(10px) scale(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Skeleton Loading Animation */
.skeleton {
    background: linear-gradient(90deg, #1C2541 25%, #3A506B 50%, #1C2541 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { 
        background-position: 200% 0; 
    }
    100% { 
        background-position: -200% 0; 
    }
}

/* Scroll Reveal Animation Styles */
.reveal-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.reveal-element.revealed {
    opacity: 1;
    transform: translateY(0);
}