:root {
    /* Colors */
    --primary-color: #0F4C81;
    --secondary-color: #7EC850;
    --background-color: #F0F8FF;
    --footer-bg-color: #0A2463;
    --button-color: #0F4C81;
    --primary-text-color: #333333;
    --secondary-text-color: #555555;
    --heading-text-color: #0A2463;
    --accent-color: #FFD700; /* A vibrant accent for brutalist touch */

    /* Section Backgrounds */
    --section-bg-1: #F8F8F8;
    --section-bg-2: #E0EAFC;
    --section-bg-3: #B0DDFB;
    --section-bg-4: #DDF1FF;
    --section-bg-5: #C0E0FF;

    /* Fonts */
    --heading-font: 'Roboto', sans-serif;
    --body-font: 'Open Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 96px;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-full: 9999px;

    /* Box Shadows */
    --box-shadow-btn: 4px 4px 0px var(--footer-bg-color);
    --box-shadow-btn-hover: 6px 6px 0px var(--footer-bg-color);
    --box-shadow-card: 8px 8px 0px rgba(0, 0, 0, 0.1);
    --box-shadow-card-hover: 12px 12px 0px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: var(--body-font);
    color: var(--primary-text-color);
    background-color: var(--background-color);
    line-height: 1.7;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden; /* Prevent horizontal scroll due to brutalist elements */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    color: var(--heading-text-color);
    line-height: 1.2;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    letter-spacing: -0.02em; /* Tighter for brutalist feel */
}

h1 {
    font-size: 3.5rem;
    font-weight: 900;
    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: 1em;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease, border-bottom 0.3s ease;
}

a:hover {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

strong {
    font-weight: bold;
    color: var(--heading-text-color);
}

/* Utility Classes for Tailwind complement */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    background-color: var(--button-color);
    color: white;
    font-family: var(--heading-font);
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--box-shadow-btn);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease, background-color 0.3s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
    outline: none;
}

.btn:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px) translateX(-2px);
    box-shadow: var(--box-shadow-btn-hover);
}

.btn:active {
    transform: translateY(2px) translateX(2px);
    box-shadow: 2px 2px 0px var(--footer-bg-color);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease-out, height 0.4s ease-out;
    z-index: -1;
}

.btn:hover::before {
    width: 150%;
    height: 150%;
}

.btn-secondary {
    background-color: var(--secondary-color);
    box-shadow: 4px 4px 0px var(--primary-color);
}

.btn-secondary:hover {
    background-color: darken(var(--secondary-color), 10%);
    box-shadow: 6px 6px 0px var(--primary-color);
}

/* Section Backgrounds */
.section-bg-1 {
    background-color: var(--section-bg-1);
    padding: var(--spacing-lg) 0;
}

.section-bg-2 {
    background-color: var(--section-bg-2);
    padding: var(--spacing-lg) 0;
}

.section-bg-3 {
    background-color: var(--section-bg-3);
    padding: var(--spacing-lg) 0;
}

.section-bg-4 {
    background-color: var(--section-bg-4);
    padding: var(--spacing-lg) 0;
}

.section-bg-5 {
    background-color: var(--section-bg-5);
    padding: var(--spacing-lg) 0;
}

/* Cards */
.card {
    background-color: white;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--box-shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid var(--primary-color); /* Brutalist border */
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-card-hover);
}

/* Form Elements */
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    font-family: var(--body-font);
    font-size: 1rem;
    color: var(--primary-text-color);
    background-color: var(--background-color);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--secondary-color), 0.2);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Header and Footer considerations (assuming these might be custom components) */
.main-header {
    background-color: var(--footer-bg-color); /* Dark, impactful header */
    color: white;
    padding: var(--spacing-md) 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-header .nav-link {
    color: white;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: background-color 0.3s ease, color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.main-header .nav-link:hover {
    background-color: var(--primary-color);
    color: var(--accent-color);
    border-bottom: none;
}

.main-footer {
    background-color: var(--footer-bg-color);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    font-size: 0.9rem;
    border-top: 5px solid var(--primary-color); /* Brutalist border */
}

.main-footer a {
    color: var(--secondary-color);
    border-bottom: 1px dotted var(--secondary-color);
}

.main-footer a:hover {
    color: var(--accent-color);
    border-bottom: 1px solid var(--accent-color);
}

/* Logo specific styles for geometric, abstract tennis-themed symbol */
/* This would typically be an SVG or image, but here's a placeholder if it were CSS-driven */
.site-logo {
    display: inline-block;
    width: 60px; /* Example size */
    height: 60px;
    position: relative;
    overflow: hidden;
}

.site-logo::before, .site-logo::after {
    content: '';
    position: absolute;
    background-color: var(--primary-color);
}

.site-logo::before {
    width: 70%;
    height: 70%;
    border-radius: 50%;
    top: 15%;
    left: 15%;
    background-color: var(--primary-color);
    border: 3px solid var(--secondary-color);
    box-sizing: border-box;
}

.site-logo::after {
    width: 30%;
    height: 30%;
    border-radius: 50%;
    top: -5%;
    left: 60%;
    background-color: var(--secondary-color);
    transform: rotate(45deg);
    box-shadow: 2px 2px 0px var(--footer-bg-color); /* Brutalist shadow for logo */
}


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

.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
    opacity: 0; /* Ensure it's hidden before animation */
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.9rem;
    }

    .section-bg-1, .section-bg-2, .section-bg-3, .section-bg-4, .section-bg-5 {
        padding: var(--spacing-md) 0;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .container {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
}


/* 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;
    }
}