/* CSS Root Variables for Styling */
:root {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --border-color: #30363d;
    --accent-color: #58a6ff;
    --text-primary: #c9d1d9;
    --start-color: #2ea043;
    --end-color: #f85149;
    --obstacle-color: #000000;
    --matrix-cell-bg: #21262d;
    --matrix-cell-hover: #30363d;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: #fff;
    text-shadow: 0 0 10px rgba(88, 166, 255, 0.5), 0 0 20px rgba(88, 166, 255, 0.3);
    letter-spacing: 0.5rem;
    text-transform: uppercase;
    font-family: 'Inter', sans-serif;
}

.container {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 1200px;
    width: 100%;
}

.matrix-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    transition: transform 0.3s ease;
}

.matrix-wrapper:hover {
    transform: translateY(-5px);
}

.matrix-label {
    text-align: center;
    margin-bottom: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    font-size: 0.9rem;
    color: var(--accent-color);
}

.grid {
    display: grid;
    grid-template-columns: repeat(5, 70px);
    grid-template-rows: repeat(5, 70px);
    gap: 4px;
}

.cell {
    background: var(--matrix-cell-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    border-radius: 6px;
    transition: background 0.2s;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.cell:hover {
    background: var(--matrix-cell-hover);
}

.cell::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

.cell.start {
    background: rgba(46, 160, 67, 0.2);
    border: 2px solid var(--start-color);
    color: var(--start-color);
    font-weight: bold;
}

.cell.end {
    background: rgba(248, 81, 73, 0.2);
    border: 2px solid var(--end-color);
    color: var(--end-color);
    font-weight: bold;
}

.cell.obstacle {
    background: var(--obstacle-color);
    border: 2px solid #30363d;
    opacity: 1;
}

.cell.path {
    background: rgba(255, 255, 0, 0.15) !important;
    box-shadow: inset 0 0 10px rgba(255, 255, 0, 0.3);
    border-color: rgba(255, 255, 0, 0.5) !important;
    color: #fff700 !important;
    font-weight: bold;
}

.marker {
    position: absolute; 
    top: 2px; 
    left: 4px; 
    font-size: 0.6rem; 
    opacity: 0.7;
}

.policy-cell {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.tech-button {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    padding: 0.8rem 2rem;
    font-size: 1rem;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    outline: none;
}

.tech-button:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--accent-color);
}

.tech-button:disabled {
    border-color: var(--border-color);
    color: var(--border-color);
    cursor: not-allowed;
    box-shadow: none;
}

/* Animations Scroll Reveal */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.matrix-wrapper {
    animation: fadeIn 0.8s ease backwards;
}

.matrix-wrapper:nth-child(2) {
    animation-delay: 0.2s;
}