:root {
    --primary: #000000;
    --secondary: #111111;
    --accent: #222222;
    --highlight: #FF8C00;
    --highlight-light: #FFA500;
    --light: #f1f1f1;
    --gap: 1.8rem;
    --padding: 2rem;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--primary);
    color: var(--light);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--padding);
}

.title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    margin-bottom: clamp(1.8rem, 4vw, 2.8rem);
    text-align: center;
    color: var(--highlight);
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.container-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--gap);
    justify-content: center;
    margin: 0 auto;
    width: 100%;
    max-width: 90vw;
}

.container-item {
    background-color: var(--secondary);
    border: 1px solid var(--accent);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    aspect-ratio: 1/1;
    text-align: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.container-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,140,0,0.1) 0%, rgba(0,0,0,0) 100%);
    opacity: 0;
    transition: var(--transition);
}

.container-item:hover,
.container-item:focus {
    transform: translateY(-4px);
    box-shadow: 0 6px 18px rgba(255, 140, 0, 0.3);
    border-color: var(--highlight);
    outline: none;
}

.container-item:hover::before,
.container-item:focus::before {
    opacity: 1;
}

.symbol {
    font-size: clamp(2.8rem, 5vw, 3rem);
    margin-bottom: 1.2rem;
    color: var(--highlight);
    line-height: 1;
    font-family: 'Times New Roman', serif;
    filter: drop-shadow(0 2px 4px rgba(255, 140, 0, 0.3));
    transition: var(--transition);
}

.container-item:hover .symbol,
.container-item:focus .symbol {
    color: var(--highlight-light);
    filter: drop-shadow(0 2px 8px rgba(255, 140, 0, 0.6));
    transform: scale(1.05);
}

.container-text {
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 500;
    letter-spacing: 0.6px;
    color: var(--light);
    transition: var(--transition);
}

.container-item:hover .container-text,
.container-item:focus .container-text {
    color: var(--highlight-light);
}

@media (max-width: 768px) {
    .container-grid {
        grid-template-columns: repeat(2, minmax(160px, 1fr));
        gap: 1.5rem;
        max-width: 500px;
    }
}

@media (max-width: 480px) {
    .container-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 280px;
    }

    .container-item {
        min-height: 180px;
        padding: 2rem;
    }

    body {
        padding: 1.5rem;
    }
}