body {
    background:
        radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        #2f4f4f;
    background-size: 20px 20px;
    min-height: 100vh;
    color: #1f2937;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    margin-top: 0px;
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    margin: 1rem 0 3rem 0;
}

.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

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

.card-icon {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 20px;
    height: 20px;
    z-index: 1;
}

.task-card {
    position: relative;
    overflow: hidden;
    padding-top: 2.5rem;
    aspect-ratio: unset;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 1rem;
    padding: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}

.task-card:hover,
.task-card.hovered {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.task-card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
    text-decoration: none;
}

.task-card p {
    font-size: 0.875rem;
    color: #4b5563;
    text-decoration: none;
}

button {
    background: #2f4f4f;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: #3a5c4d;
}

.result {
    margin-top: 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: #1f2937;
}

.construction {
    margin: 6rem auto;
    padding: 2rem;
    max-width: 600px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed #94a3b8;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    backdrop-filter: blur(6px);
}

.construction h2 {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.construction p {
    font-size: 1.125rem;
    color: #e5e7eb;
    margin-bottom: 2rem;
}

.back_404 {
    display: inline-block;
    font-size: 1.25rem;
    color: white;
    text-decoration: none;
    background: #2f4f4f;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.2s ease;
}

.back_404:hover {
    background: #194536;
}

.center-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

canvas {
    pointer-events: none;
}