body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background-color: #1a1a1a;
    color: #f0f0f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

h1 {
    font-size: 2.5rem;
    color: #4CAF50; /* A green accent color */
    text-shadow: 2px 2px 4px #000;
}

#main-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    padding: 5px;
    box-sizing: border-box;
}

#canvas-container {
    border: 2px solid #4CAF50;
    border-radius: 8px;
    margin-bottom: 20px;
    background-color: #2c2c2c;
    width: 80vw;
    height: 70vh;
    max-width: 100%;
}

#controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    background-color: #2c2c2c;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 80vw;
    box-sizing: border-box;
}

button,
select {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 12px 24px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

button:hover,
select:hover {
    background-color: #45a049;
    transform: translateY(-2px);
}

button:active,
select:active {
    transform: translateY(1px);
}

#choose-marker-btn,
#clear-maze-btn,
#reset-btn {
    background-color: #f44336; /* Red for destructive/reset actions */
}

#choose-marker-btn:hover,
#clear-maze-btn:hover,
#reset-btn:hover {
    background-color: #da190b;
}

#start-algo-btn {
    background-color: #008CBA; /* Blue for the main action */
}

#start-algo-btn:hover {
    background-color: #007BA5;
}

select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="white" class="bi bi-chevron-down" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 16px 16px;
    padding-right: 40px;
}

select option {
    background-color: #2c2c2c;
    color: #f0f0f0;
}

#message {
    font-size: 1.2rem;
    color: #f0f0f0;
    margin: 10px 0;
    min-height: 20px;
    text-align: center;
}