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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-bg: #ecf0f1;
    --white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
header {
    background-color: var(--primary-color);
    color: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

.nav-links a:hover {
    border-bottom-color: var(--secondary-color);
    color: var(--secondary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 4rem 0;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
}

.hero-image {
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    max-width: 135px;
    width: 135px;
}

.hero-content {
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
    line-height: 1.1;
}

.tagline {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.95;
    font-weight: 600;
    font-style: italic;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.subtitle-secondary {
    font-size: 1rem;
    opacity: 0.85;
}

/* About Section */
.about {
    padding: 4rem 0;
    background-color: var(--light-bg);
}

.about h2,
.activities h2,
.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-align: center;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.about-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.12);
}

.about-card h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.about-card p {
    color: var(--text-light);
}

.bio-text {
    max-width: 700px;
    margin: 2rem auto;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    text-align: center;
}

/* Activities Section */
.activities {
    padding: 4rem 0;
    background-color: var(--white);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.activity-card {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
    transition: var(--transition);
}

.activity-card:hover {
    background-color: #f8f9fa;
    transform: translateX(5px);
}

.activity-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.activity-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    text-align: center;
}

.contact h2 {
    color: var(--white);
    margin-bottom: 2rem;
}

.contact-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.contact-link {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--white);
    color: var(--secondary-color);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

.contact-link:hover {
    background-color: var(--light-bg);
    transform: scale(1.05);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    .hero-image img {
        max-width: 120px;
        width: 120px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.2rem;
    }

    .about h2,
    .activities h2,
    .contact h2 {
        font-size: 1.8rem;
    }

    .activities-grid {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }
}