/* General Resets & Variables */
:root {
    --primary-green: #008000; /* Panathinaikos Green */
    --darker-green: #006400; /* Darker Green for hover */
    --light-green: #e6ffe6;
    --white: #ffffff;
    --light-grey: #f4f4f4;
    --dark-grey: #333;
    --text-color: #444;
    --border-color: #ddd;
    --spacing-unit: 1.5rem;
    --header-height: 4.5rem; /* For fixed header if needed */
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Base font size */
}

body {
    font-family: 'Lato', sans-serif; /* A clean, modern sans-serif font */
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif; /* A bolder font for headings */
    color: var(--dark-grey);
    margin-bottom: var(--spacing-unit);
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.4rem; }

p {
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--darker-green);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 5px;
    font-weight: 700;
    text-transform: uppercase;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-green);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--darker-green);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--dark-grey);
    color: var(--white);
    border: 1px solid var(--dark-grey);
}

.btn-secondary:hover {
    background-color: var(--text-color);
    transform: translateY(-2px);
}

.btn-tertiary {
    background-color: transparent;
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

.btn-tertiary:hover {
    background-color: var(--primary-green);
    color: var(--white);
    transform: translateY(-2px);
}

/* Header */
.main-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky; /* Or 'fixed' if you want it always visible */
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* Allows wrapping on smaller screens */
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px; /* Adjust as needed */
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0;
    color: var(--primary-green);
}

.logo a {
    display: flex;
    align-items: center;
    color: inherit;
    text-decoration: none;
}

/* Navigation */
.main-nav .nav-links {
    list-style: none;
    display: flex;
}

.main-nav .nav-links li {
    margin-left: var(--spacing-unit);
}

.main-nav .nav-links a {
    font-weight: 600;
    padding: 0.5rem 0;
    position: relative;
}

.main-nav .nav-links a.active::after,
.main-nav .nav-links a:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-green);
    transform: scaleX(1);
}

.main-nav .nav-links a::after {
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--primary-green);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 128, 0, 0.7), rgba(0, 128, 0, 0.7)), url('https://www.gettyimages.com/photos/panathinaikos-fans') no-repeat center center/cover;
    color: var(--white);
    text-align: center;
    padding: 6rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.hero-content h2 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.cta-buttons .btn {
    margin: 0 0.5rem;
}

/* Sports Overview */
.sports-overview {
    padding: 4rem 0;
    text-align: center;
    background-color: var(--light-grey);
}

.sports-overview h3 {
    margin-bottom: 3rem;
    color: var(--primary-green);
}

.sport-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-unit);
}

.sport-card {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
    padding-bottom: var(--spacing-unit); /* For button positioning */
    display: flex;
    flex-direction: column;
}

.sport-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.12);
}

.sport-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.sport-card h4 {
    margin: var(--spacing-unit) var(--spacing-unit) 0.5rem;
    color: var(--darker-green);
    font-size: 1.6rem;
}

.sport-card p {
    padding: 0 var(--spacing-unit);
    flex-grow: 1; /* Ensures text fills space */
}

.sport-card .btn {
    margin: var(--spacing-unit);
    align-self: flex-start; /* Aligns button to the left within the card */
}

/* Call to Action Section */
.call-to-action {
    background-color: var(--primary-green);
    color: var(--white);
    text-align: center;
    padding: 4rem 0;
}

.call-to-action h3 {
    color: var(--white);
    font-size: 2.5rem;
}

.call-to-action p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem;
}

.call-to-action .btn {
    background-color: var(--white);
    color: var(--primary-green);
    border: 2px solid var(--white);
}

.call-to-action .btn:hover {
    background-color: var(--light-green);
    color: var(--darker-green);
}


/* Footer */
.main-footer {
    background-color: var(--dark-grey);
    color: var(--light-grey);
    padding: 2rem 0;
    text-align: center;
    font-size: 0.9rem;
}

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

.main-footer p {
    margin-bottom: 0;
}

.main-footer a {
    color: var(--light-grey);
    margin: 0 0.5rem;
}

.main-footer a:hover {
    color: var(--primary-green);
}

.social-links {
    margin-top: 1rem; /* For mobile spacing */
}

.social-links a {
    font-size: 1.5rem;
    margin: 0 0.8rem;
    color: var(--light-grey);
}

.social-links a:hover {
    color: var(--primary-green);
}


/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.2rem; }

    .main-header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .main-nav {
        width: 100%;
        margin-top: 1rem;
    }

    .main-nav .nav-links {
        flex-direction: column;
        width: 100%;
        display: none; /* Hidden by default for mobile */
        text-align: center;
        background-color: var(--white);
        border-top: 1px solid var(--border-color);
        padding-top: 1rem;
    }

    .main-nav .nav-links.active {
        display: flex; /* Shown when active */
    }

    .main-nav .nav-links li {
        margin: 0;
        border-bottom: 1px solid var(--light-grey);
    }

    .main-nav .nav-links li:last-child {
        border-bottom: none;
    }

    .main-nav .nav-links a {
        display: block;
        padding: 1rem;
        width: 100%;
        color: var(--dark-grey);
    }

    .main-nav .nav-links a:hover {
        background-color: var(--light-green);
    }

    .menu-toggle {
        display: block; /* Show on mobile */
        position: absolute;
        right: var(--spacing-unit);
        top: 1.5rem;
    }

    .hero {
        padding: 4rem 0;
        min-height: 50vh;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .cta-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        width: 80%;
        margin: 0 auto;
    }

    .cta-buttons .btn {
        margin: 0; /* Remove horizontal margin for stacking */
    }

    .sport-card {
        margin-bottom: var(--spacing-unit);
    }

    .main-footer .container {
        flex-direction: column;
        gap: 1rem;
    }

    .social-links {
        margin-top: 0;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 2rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
    .btn {
        font-size: 0.9rem;
        padding: 0.7rem 1.5rem;
    }
    .logo h1 {
        font-size: 1.5rem;
    }
    .logo img {
        height: 40px;
    }
}