:root {

    /* Hlavní barvy */

    --primary-color: #2563eb;

    --secondary-color: #1e40af;

    --accent-color: #60a5fa;

    

    /* Neutrální barvy */

    --background-color: #ffffff;

    --text-color: #1f2937;

    --nav-text-color: #4b5563;

    

    /* Přechody a stíny */

    --transition-speed: 0.3s;

    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);

    --hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);



    --hero-gradient: linear-gradient(135deg, rgba(37,99,235,0.1) 0%, rgba(96,165,250,0.1) 100%);

    --hero-text-color: #0f172a;

    --button-hover-transform: translateY(-3px);

    --button-radius: 12px;

    --hero-spacing: clamp(2rem, 5vw, 5rem);

    --hero-animation-duration: 0.8s;

    

    /* Rozměry */

    --navbar-height: 80px;

    --container-width: 1200px;

    --mobile-breakpoint: 768px;



}



* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



body {

    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    color: var(--text-color);

}



.container {

    max-width: var(--container-width);

    margin: 0 auto;

    padding: 0 1rem;

}



.navbar {

    position: fixed;

    top: 0;

    left: 0;

    width: 100%;

    height: var(--navbar-height);

    background-color: var(--background-color);

    box-shadow: var(--box-shadow);

    z-index: 1000;

    transition: transform var(--transition-speed);

}



/* Efekt schování navbaru při scrollování dolů */

.navbar.hide {

    transform: translateY(-100%);

}



.navbar .container {

    height: 100%;

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.logo {

    display: flex;

    align-items: center;

    gap: 1rem;

    transition: transform var(--transition-speed);

}



.logo:hover {

    transform: scale(1.05);

}



.logo img {

    height: 40px;

    width: auto;

}



.logo span {

    font-size: 1.5rem;

    font-weight: 700;

    color: var(--primary-color);

}



.nav-links {

    display: flex;

    gap: 2rem;

}



.nav-link {

    color: var(--nav-text-color);

    text-decoration: none;

    font-weight: 500;

    padding: 0.5rem 1rem;

    border-radius: 0.5rem;

    transition: all var(--transition-speed);

    position: relative;

}



.nav-link::after {

    content: '';

    position: absolute;

    bottom: 0;

    left: 50%;

    width: 0;

    height: 2px;

    background-color: var(--primary-color);

    transition: all var(--transition-speed);

    transform: translateX(-50%);

}



.nav-link:hover {

    color: var(--primary-color);

}



.nav-link:hover::after {

    width: 100%;

}



.mobile-menu-btn {

    display: none;

    background: none;

    border: none;

    cursor: pointer;

    padding: 0.5rem;

    position: relative;

    z-index: 100;

}



.hamburger-line {

    display: block;

    width: 25px;

    height: 2px;

    background-color: var(--text-color);

    margin: 5px 0;

    transition: all var(--transition-speed);

}



/* Mobilní zobrazení */

@media (max-width: 768px) {

    .mobile-menu-btn {

        display: block;

    }



    .nav-links {

        position: fixed;

        top: 0;

        right: -100%;

        height: 100vh;

        width: 100%;

        background-color: var(--background-color);

        flex-direction: column;

        justify-content: center;

        align-items: center;

        transition: right var(--transition-speed);

        gap: 2rem;

    }



    .nav-links.active {

        right: 0;

    }



    .mobile-menu-btn.active .hamburger-line:nth-child(1) {

        transform: rotate(45deg) translate(5px, 5px);

    }



    .mobile-menu-btn.active .hamburger-line:nth-child(2) {

        opacity: 0;

    }



    .mobile-menu-btn.active .hamburger-line:nth-child(3) {

        transform: rotate(-45deg) translate(7px, -6px);

    }



    .nav-link {

        font-size: 1.2rem;

    }

}



/* Animace při načtení */

@keyframes fadeInDown {

    from {

        opacity: 0;

        transform: translateY(-20px);

    }

    to {

        opacity: 1;

        transform: translateY(0);

    }

}



.navbar {

    animation: fadeInDown 0.5s ease-out;

}







/* Footer Styles */

.footer {

    background: linear-gradient(135deg, 

        var(--primary-color) 0%,

        var(--secondary-color) 100%);

    color: var(--background-color);

    padding: 4rem 0 0;

    position: relative;

    overflow: hidden;

}



/* Dekorativní prvek */

.footer::before {

    content: '';

    position: absolute;

    top: 0;

    left: 0;

    width: 100%;

    height: 100%;

    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");

}



.footer .container {

    position: relative;

    max-width: 1200px;

    margin: 0 auto;

    padding: 0 1.5rem;

}



.footer-content {

    display: grid;

    grid-template-columns: 2fr 1fr 1fr;

    gap: 4rem;

    margin-bottom: 3rem;

}



/* Footer Sections */

.footer-section {

    display: flex;

    flex-direction: column;

    gap: 1.2rem;

}



.footer-section h3 {

    color: var(--background-color);

    font-size: 1.3rem;

    font-weight: 600;

    margin-bottom: 0.5rem;

    position: relative;

    padding-bottom: 0.8rem;

}



.footer-section h3::after {

    content: '';

    position: absolute;

    bottom: 0;

    left: 0;

    width: 40px;

    height: 3px;

    background: var(--accent-color);

    border-radius: 2px;

}



.footer-section p {

    color: var(--background-color);

    line-height: 1.6;

    font-size: 0.95rem;

}



/* Quick Links */

.footer-section a {

    color: var(--background-color);

    text-decoration: none;

    transition: var(--transition-speed);

    font-size: 0.95rem;

    display: block;

    margin-bottom: 0.5rem;

}



.footer-section a:hover {

    color: var(--background-color);

    transform: translateX(5px);

}



/* Social Links */

.social-links {

    display: flex;

    gap: 1rem;

}



.social-links a {

    background: rgba(255, 255, 255, 0.1);

    width: 40px;

    height: 40px;

    border-radius: 50%;

    display: flex;

    align-items: center;

    justify-content: center;

    transition: var(--transition-speed);

}



.social-links a:hover {

    background: var(--accent-color);

    transform: translateY(-5px);

}



.social-links i {

    font-size: 1.2rem;

    color: var(--background-color);

}



/* Footer Bottom */

.footer-bottom {

    border-top: 1px solid rgba(255, 255, 255, 0.1);

    padding: 1.5rem 0;

    text-align: center;

}



.footer-bottom p {

    color: rgba(255, 255, 255, 0.8);

    font-size: 0.9rem;

}



/* Media Queries */

@media (max-width: 968px) {

    .footer-content {

        grid-template-columns: 1fr 1fr;

        gap: 3rem;

    }



    .footer-section:first-child {

        grid-column: 1 / -1;

    }

}



@media (max-width: 768px) {

    .footer {

        padding: 3rem 0 0;

    }



    .footer-content {

        grid-template-columns: 1fr;

        gap: 2rem;

        text-align: center;

    }



    .footer-section h3::after {

        left: 50%;

        transform: translateX(-50%);

    }



    .social-links {

        justify-content: center;

    }



    .footer-section a:hover {

        transform: translateX(0) scale(1.05);

    }

}



/* Animace pro sociální ikony */

@keyframes float {

    0%, 100% {

        transform: translateY(0);

    }

    50% {

        transform: translateY(-5px);

    }

}



.social-links a:hover i {

    animation: float 0.8s ease infinite;

}



/* Hover efekt pro logo */

.footer-section:first-child h3 {

    font-size: 1.8rem;

    font-weight: 700;

    background: var(--background-color);

    -webkit-background-clip: text;

    -webkit-text-fill-color: transparent;

    transition: var(--transition-speed);

}