:root {
    /* Colors */
    --primary-color: #0D1B2A;
    --secondary-color: #E0A800;
    --background-color: #F4F5F7;
    --footer-bg-color: #0D1B2A;
    --button-color: #E0A800;
    --text-color: #0D1B2A;
    --text-color-light: #F4F5F7;
    --accent-color: var(--secondary-color); /* Using secondary as accent for brutalism */

    --section-bg-1: #283747;
    --section-bg-2: #D3D7DC;
    --section-bg-3: #E9ECEF;
    --section-bg-4: #F4F5F7;
    --section-bg-5: #B9C2CE;

    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-size-base: 1rem; /* 16px */
    --line-height-base: 1.7;
    --line-height-heading: 1.2;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Borders & Shadows */
    --border-width: 2px;
    --border-color: var(--primary-color);
    --shadow-brutal: 5px 5px 0px var(--primary-color);
    --shadow-brutal-hover: 8px 8px 0px var(--primary-color);
    --neon-shadow: 0 0 5px var(--secondary-color), 0 0 10px var(--secondary-color), 0 0 15px var(--secondary-color);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background-color: var(--background-color);
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: var(--line-height-heading);
    color: var(--primary-color);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em; /* Subtle brutalist touch */
}

h1 {
    font-size: 3.5rem;
    font-weight: 900; /* Extra bold for brutalism */
    text-transform: uppercase;
}

h2 {
    font-size: 2.5rem;
    font-weight: 800;
    text-transform: uppercase;
}

h3 {
    font-size: 1.8rem;
    font-weight: 700;
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

a::after {
    content: '';
    position: absolute;
    width: 0;
    height: var(--border-width);
    bottom: -2px;
    left: 0;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

a:hover::after {
    width: 100%;
}

/* Utility classes for spacing and background */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-lg) 0;
}

/* Background classes for sections */
.section-bg-1 {
    background-color: var(--section-bg-1);
    color: var(--text-color-light);
}

.section-bg-1 h1, .section-bg-1 h2, .section-bg-1 h3, .section-bg-1 h4, .section-bg-1 h5, .section-bg-1 h6 {
    color: var(--text-color-light);
}

.section-bg-1 a {
    color: var(--secondary-color);
}

.section-bg-2 {
    background-color: var(--section-bg-2);
}

.section-bg-3 {
    background-color: var(--section-bg-3);
}

.section-bg-4 {
    background-color: var(--section-bg-4);
}

.section-bg-5 {
    background-color: var(--section-bg-5);
}

/* Buttons - Ostře řezané hrany, mírný zdvihový efekt (shadow) při najetí, kontrastní text. Inspirace brutalismem. */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    border: var(--border-width) solid var(--primary-color);
    background-color: var(--button-color);
    color: var(--primary-color);
    text-align: center;
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-brutal); /* Brutalist shadow */
    position: relative;
    z-index: 1; /* Ensure button is above shadow */
}

.btn:hover {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    transform: translate(-3px, -3px); /* Slight lift effect */
    box-shadow: var(--shadow-brutal-hover);
}

.btn-secondary {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border-color: var(--secondary-color);
}

/* Header - Pevný, nenápadný, s velkým logem a minimalistickou navigací. Možná s průhledností a efektem skrolování. */
.header {
    background-color: rgba(var(--background-color), 0.9); /* Subtle transparency */
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: var(--border-width) solid var(--primary-color); /* Brutalist border */
    transition: background-color 0.3s ease;
}

.header.scrolled {
    background-color: var(--background-color); /* Less transparent on scroll */
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header .logo {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: -0.05em;
    padding: var(--spacing-xs) 0;
    border: var(--border-width) solid var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    box-shadow: var(--shadow-brutal);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.header .logo:hover {
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0px var(--secondary-color);
}

.header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--spacing-md);
}

.header nav a {
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: 1.1rem;
    padding: var(--spacing-xs) 0;
}

.header nav a::after {
    background-color: var(--primary-color); /* Underline primary for nav */
}

.header nav a:hover {
    color: var(--secondary-color);
}

.header nav a:hover::after {
    background-color: var(--secondary-color);
}

/* Footer - Tmavý, robustní, s jasně oddělenými sloupci pro kontakty, navigaci a sociální média. Možná nepatrný neonový akcent na ikonách. */
.footer {
    background-color: var(--footer-bg-color);
    color: var(--text-color-light);
    padding: var(--spacing-lg) 0;
    border-top: var(--border-width) solid var(--secondary-color); /* Accent border */
}

.footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    font-size: 1.5rem;
    letter-spacing: 0.05em;
}

.footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer ul li {
    margin-bottom: var(--spacing-xs);
}

.footer a {
    color: var(--text-color-light);
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--secondary-color);
}

.footer a::after {
    background-color: var(--secondary-color);
}

.footer .social-icons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.footer .social-icons a {
    font-size: 1.8rem;
    color: var(--text-color-light);
    transition: transform 0.3s ease, color 0.3s ease, text-shadow 0.3s ease;
}

.footer .social-icons a:hover {
    color: var(--secondary-color);
    transform: translateY(-3px);
    text-shadow: var(--neon-shadow); /* Neon accent on hover */
}

.footer .copyright {
    text-align: center;
    margin-top: var(--spacing-lg);
    border-top: 1px solid rgba(var(--text-color-light), 0.2);
    padding-top: var(--spacing-sm);
    font-size: 0.9rem;
    color: rgba(var(--text-color-light), 0.7);
}

/* Forms */
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    border: var(--border-width) solid var(--primary-color);
    background-color: var(--background-color);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--text-color);
    box-shadow: 2px 2px 0px var(--primary-color);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 4px 4px 0px var(--secondary-color);
}

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

.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .header .logo {
        font-size: 1.8rem;
        padding: var(--spacing-xs);
    }

    .header nav ul {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .footer .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer .social-icons {
        justify-content: center;
    }
}


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}