* {
    transition: background-color 0.15s ease, color 0.15s linear;
}

.dark-mode-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
}

.hero-section {
    background: linear-gradient(135deg, var(--mud-palette-info) 0%, var(--mud-palette-primary) 100%);
    color: white;
    text-align: center;
    border-radius: 16px;
    transition: all 0.3s;
}

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

    .fade-in.delay-1 {
        animation-delay: 0.5s;
    }

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.hover-lift {
    transition: transform 0.3s, box-shadow 0.3s;
}

    .hover-lift:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    }

.skill-card, .project-card {
    border-radius: 12px;
    text-align: center;
}

.shine {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
}

    .shine::after {
        content: '';
        position: absolute;
        top: 0;
        left: -75%;
        width: 40%;
        height: 100%;
        background: linear-gradient( 120deg, rgba(255, 255, 255, 0) 0%, /* okraje průhledné */
        rgba(255, 255, 255, 0.1) 25%, /* střed jemný */
        rgba(255, 255, 255, 0.2) 50%, /* nejsvětlejší střed */
        rgba(255, 255, 255, 0.1) 75%, /* znovu jemně do okraje */
        rgba(255, 255, 255, 0) 100% /* okraje průhledné */
        );
        transform: skewX(-20deg);
        filter: blur(12px); /* rozostření pro jemný glow */
        transition: all 0.4s;
    }

    .shine:hover::after {
        left: 125%;
    }