/* ============================================
   INDEX PAGE UTILITIES
   ============================================ */

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--button-bg), var(--button-hover));
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 5px 20px rgba(var(--button-bg-rgb), 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(var(--button-bg-rgb), 0.4);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 10001;
}

.toast {
    background: var(--card-bg);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 300px;
    animation: slideInRight 0.3s ease;
}

.toast.success { border-left: 4px solid #22c55e; }
.toast.error { border-left: 4px solid #ef4444; }
.toast.warning { border-left: 4px solid #eab308; }
.toast.info { border-left: 4px solid #3b82f6; }

/* Index Page Specific Animations */
@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes float-particle {
    from {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    to {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
        opacity: 0;
    }
    50% { opacity: 1; }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
        opacity: 0;
    }
}

@keyframes scroll-wheel {
    0% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) translateY(15px);
        opacity: 0;
    }
}

@keyframes arrow-animation {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    50% { opacity: 1; }
    100% {
        opacity: 0;
        transform: translateY(20px);
    }
}

@keyframes float-1 {
    0%, 100% { transform: translateY(0) rotate(-5deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes float-2 {
    0%, 100% { transform: translateY(0) rotate(5deg); }
    50% { transform: translateY(-30px) rotate(-5deg); }
}

@keyframes float-3 {
    0%, 100% { transform: translateY(0) rotate(-3deg); }
    50% { transform: translateY(-25px) rotate(3deg); }
}

@keyframes zoomInOut {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    10%, 90% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0.8);
    }
}

@keyframes scroll-partners {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}