/* CSS Variables for easy themeing */
:root {
    --bg-color-1: #0A0A0A; /* Dark almost black */
    --bg-color-2: #0F0F0F;
    --text-color: #00FFC0; /* Neon green/aqua */
    --accent-color: #FF00FF; /* Magenta */
    --secondary-text-color: #A0A0A0; /* Grey for taglines */
    --border-color: #303030;
    --hover-color: #64FFDA;
    --shadow-color: rgba(0, 255, 192, 0.3);
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto Mono', monospace;
    background: var(--bg-color-1);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Align to top for scroll */
    min-height: 100vh;
    overflow-x: hidden; /* Prevent horizontal scroll */
    position: relative; /* For particle canvas positioning */
}

/* Particle Canvas Overlay */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; /* Behind content */
    opacity: 0.2;
}

.container {
    width: 90%;
    max-width: 1000px;
    padding: 20px;
    box-sizing: border-box;
    background: linear-gradient(145deg, var(--bg-color-2), var(--bg-color-1));
    border: 1px solid var(--border-color);
    box-shadow: 0 0 30px var(--shadow-color);
    border-radius: 10px;
    margin: 40px auto; /* Center with top/bottom margin */
    position: relative;
    z-index: 1; /* Above particles */
    animation: fadeIn 2s ease-out;
}

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

header {
    text-align: center;
    padding: 40px 0;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--accent-color);
}

h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 5em;
    color: var(--accent-color);
    text-shadow: 0 0 15px var(--accent-color);
    letter-spacing: 5px;
    margin: 0;
    cursor: pointer; /* Indicate interactivity */
    transition: text-shadow 0.3s ease;
}

h1:hover {
    text-shadow: 0 0 25px var(--hover-color), 0 0 50px var(--hover-color);
}

.tagline {
    font-size: 1.2em;
    color: var(--secondary-text-color);
    margin-top: 10px;
}

main {
    padding: 20px 0;
}

.theme-section {
    background: rgba(10, 10, 10, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.theme-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.theme-section h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5em;
    color: var(--hover-color);
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 10px;
    margin-top: 0;
    text-align: center;
    text-transform: uppercase;
}

.theme-section p {
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--secondary-text-color);
    text-align: center;
}

.visual-cue {
    width: 100%;
    height: 250px; /* Adjust height as needed */
    background-size: cover;
    background-position: center;
    border-radius: 5px;
    margin-top: 20px;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.7);
    filter: grayscale(20%) saturate(150%); /* Subtle effect */
    transition: filter 0.5s ease;
}

.visual-cue:hover {
    filter: grayscale(0%) saturate(200%) brightness(1.1);
}

footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-text-color);
    font-size: 0.9em;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    h1 {
        font-size: 3.5em;
    }
    .theme-section h2 {
        font-size: 2em;
    }
    .container {
        width: 95%;
        padding: 15px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2.5em;
        letter-spacing: 2px;
    }
    .tagline {
        font-size: 1em;
    }
    .theme-section h2 {
        font-size: 1.5em;
    }
    .theme-section p {
        font-size: 0.9em;
    }
    .visual-cue {
        height: 180px;
    }
    .container {
        margin: 20px auto;
        padding: 10px;
    }
}