:root {
    --primary-color: #4a9eff;
    --secondary-color: #3a7dd0;
    --background-color: #0c0c18;
    --card-bg-color: rgba(30, 30, 50, 0.7);
    --text-color: #ffffff;
    --accent-color: #61dafb;
    --transition-speed: 0.3s;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    overflow-x: hidden;
}

#starfield {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    display: block; /* Prevents default inline spacing */
}

.container {
    padding-top: 80px;
}

.hero-section {
    position: relative; /* Make this the positioning context for the canvas */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 1rem;
    background: transparent;
    min-height: 300px; /* Ensure it has some height */
    overflow: hidden; /* Keep stars inside */
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 0 15px rgba(74, 158, 255, 0.5);
}

.hero-subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.8);
}

.projects-section {
    padding: 2rem 1rem;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); /* Smaller cards */
    gap: 1.5rem; /* Reduced gap */
}

.project-card {
    background: var(--card-bg-color);
    border-radius: 12px; /* Slightly smaller radius */
    overflow: hidden;
    text-decoration: none;
    color: var(--text-color);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 20px rgba(74, 158, 255, 0.4), 0 8px 25px rgba(0, 0, 0, 0.4); /* Enhanced glow */
    border-color: rgba(74, 158, 255, 0.5);
}

.card-content {
    padding: 1rem 1.25rem; /* Reduced vertical padding */
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex-grow: 1;
}

.card-content img {
    width: 70px;
    height: 70px;
    object-fit: contain;
    margin-bottom: 0.75rem; /* Reduced margin */
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.2);
    padding: 8px;
}

.card-info h3 {
    font-size: 1.15rem; /* Adjusted font size */
    margin-bottom: 0.5rem;
}

.card-info p {
    font-size: 0.85rem; /* Adjusted font size */
    color: rgba(255, 255, 255, 0.7);
    flex-grow: 1;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
}