:root {
    --nasa-blue: #0B3D91;
    --nasa-red: #E4581E;
    --nasa-gold: #a07325;
    --nasa-gold-light: #D4C688;
    --hsd-gold: #B7913C;
    --dark-blue: #1A1F2C;
    --medium-blue: #273142;
    --dark-gray: #333333;
    --light-gray: #EEEEEE;
    --text-light: #FFFFFF;
    --text-dark: #333333;
}

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

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #f0f0f0;
}

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

/* Hero Section */
.hero {
    position: relative;
    height: 500px;
    overflow: hidden;
    color: white;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 40px;
    max-width: 800px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 25px;
    max-width: 700px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}


.cta-button {
    display: inline-flex;
    align-items: center;
    background-color: var(--nasa-gold);
    color: var(--dark-blue);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.3s;
    width: fit-content;
}

.cta-button:hover {
    background-color: var(--nasa-gold-light);
}

.cta-button::after {
    content: "→";
    margin-left: 10px;
}

/* Main Content */
.main-content {
    padding: 40px 20px;
}

.section {
    margin-bottom: 50px;
}

.section-header {
    margin-bottom: 30px;
    position: relative;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--dark-blue);
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--nasa-gold);
}

.section-description {
    font-size: 1.1rem;
    color: var(--dark-gray);
    max-width: 800px;
}

/* Mission Statement */
.mission-statement {
    background-color: var(--medium-blue);
    color: white;
    padding: 30px;
    border-radius: 6px;
    margin-bottom: 40px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mission-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--nasa-gold);
}

.mission-text {
    font-size: 1.2rem;
    line-height: 1.5;
}

/* Goals Section */
.goals-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.goal-card {
    background-color: white;
    border-radius: 6px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-top: 4px solid var(--nasa-gold);
    height: 100%;
}

.goal-number {
    background-color: var(--nasa-gold);
    color: var(--dark-blue);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 15px;
}

.goal-text {
    font-size: 1.1rem;
    line-height: 1.4;
}

/* Collaborations Section */
.collaborations {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.collaboration-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ddd;
}

.collaboration-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.collaboration-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-blue);
    margin-bottom: 10px;
}

.collaboration-description {
    font-size: 1.1rem;
}

/* Partners Section */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.partner-card {
    background-color: white;
    border-radius: 6px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    border-left: 4px solid var(--nasa-blue);
    height: 100%;
    transition: all 0.3s ease;
}

.partner-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.partner-card ul {
    list-style: none;
    padding: 0;
}

.partner-card li {
    margin-bottom: 5px;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.partner-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--nasa-blue);
    margin-bottom: 10px;
}

.partner-description {
    font-size: 1rem;
    color: var(--dark-gray);
}

/* Activities Section */
.activities-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.activity-box {
    background-color: white;
    border-radius: 6px;
    padding: 0;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.activity-header {
    background: linear-gradient(to right, var(--dark-blue), var(--medium-blue));
    color: white;
    padding: 15px 20px;
    font-size: 1.3rem;
    font-weight: 600;
}

.activity-content {
    padding: 20px;
}

.activity-list {
    list-style-type: none;
}

.activity-item {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    font-size: 1.05rem;
}

.activity-item::before {
    content: "•";
    color: var(--nasa-gold);
    position: absolute;
    left: 0;
    font-size: 1.2rem;
    top: -3px;
}

.activity-item:last-child {
    margin-bottom: 0;
}

/* Enhanced Activities Sections */
.activities-detailed-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Navigation Enhancement */
.section-nav {
    background-color: var(--medium-blue);
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 8px;
    text-align: center;
}

.section-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.section-nav a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 4px;
    background-color: var(--nasa-gold);
    color: var(--dark-blue);
    font-weight: 600;
    transition: all 0.3s ease;
}

.section-nav a:hover {
    background-color: var(--nasa-gold-light);
    transform: translateY(-2px);
}

/* Footer */
footer {
    background-color: var(--dark-blue);
    color: white;
    padding: 40px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-column h3 {
    font-size: 1.2rem;
    color: var(--nasa-gold);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-column ul {
    list-style-type: none;
}

.footer-column li {
    margin-bottom: 10px;
}

.footer-column a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: var(--nasa-gold-light);
}

.copyright {
    margin-top: 40px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Media Queries */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.3rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .main-nav, .sub-nav {
        flex-direction: column;
    }
    
    .main-nav-links, .sub-nav-links {
        margin-bottom: 10px;
    }
    
    .hero {
        height: 400px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .goals-container, .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .section-nav ul {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 576px) {
    .top-bar {
        flex-direction: column;
        height: auto;
        padding: 10px;
    }
    
    .nasa-logo {
        margin-bottom: 10px;
    }
    
    .top-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .top-nav a {
        margin: 5px;
    }
    
    .hero {
        height: 350px;
    }
    
    .hero-content {
        padding: 20px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
}