:root {
    --bg-color: #ffffff;
    --accent-color: #4a6fa5;
    --container-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    /* Software shadow for light mode */
    --border-radius: 8px;
}

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

body {
    background-color: var(--bg-color);
    /* Removed dark gradient, keeping it simple white as requested */
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px;
}

.main-container {
    width: 500px;
    background: #000;
    box-shadow: var(--container-shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
    /* Ensures rounded corners clip images */
    display: flex;
    flex-direction: column;
}

/* Helper to allow absolute positioning of hotspots over images */
.image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.hotspot {
    position: absolute;
    display: block;
    background: transparent;
    cursor: pointer;
    z-index: 10;
}

.hotspot:hover {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

header {
    width: 100%;
    height: 210px;
    background: #000;
}

header img {
    display: block;
    width: 100%;
    height: auto;
}

.content-row {
    display: flex;
    width: 100%;
}

aside {
    width: 96px;
    background: #556B2F;
    /* Fallback based on image tone */
}

aside img {
    display: block;
    width: 100%;
}

main {
    width: 404px;
    background: #fff;
}

main img {
    display: block;
    width: 100%;
}

/* Optional: Add a subtle overlay or footer if needed, but keeping it clean for now */