:root {
    --primary-blue: #1e40af;
    --primary-green: #059669;
    --accent-yellow: #f59e0b;
    --dark-blue: #1e3a8a;
    --dark-green: #047857;
}

body {
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: transparent;
}

.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.countdown-item {
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.nav-scrolled {
    background: rgba(21, 32, 66, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

.program-day.active {
    background: var(--primary-blue);
    color: white;
}

.program-day:not(.active) {
    background: white;
    color: var(--primary-blue);
    border: 2px solid #e5e7eb;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.animate-pulse-slow {
    animation: pulse 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-fade-in {
    animation: fadeIn 1s ease-out forwards;
    opacity: 0;
}

.animate-fade-in-up {
    animation: fadeInUp 1s ease-out forwards;
    opacity: 0;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.news-carousel {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none; /* For Firefox */
}

.news-carousel::-webkit-scrollbar {
    display: none; /* For Chrome, Safari, and Opera */
}


.news-card-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0) 100%);
}

.news-card-content {
    transform: translateY(0);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.group:hover .news-card-content {
    transform: translateY(-1.5rem);
}

.sponsor-logo {
    filter: grayscale(100%);
    transition: all 0.3s ease;
}

.sponsor-logo:hover {
    filter: grayscale(0%);
    transform: scale(1.05);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--dark-green) 100%);
}

/* Mobile Menu Fixes */
.mobile-menu-container {
    pointer-events: none;
}

.mobile-menu-container.active {
    pointer-events: all;
}

.mobile-overlay {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.mobile-overlay.active {
    opacity: 1;
}

.mobile-menu {
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
}

.mobile-menu.active {
    transform: translateX(0);
}

/* Navigation link active state */
.nav-link-active {
    color: #fbbf24 !important;
    font-weight: 600;
}

/* Image fallback */
.logo-fallback {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.5rem;
}