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

body {
    background-color: #000;
    color: #fff;
    font-family: Arial, sans-serif;
    padding: 50px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    font-weight: normal;
}

.count-display {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #ccc;
}

.count-number {
    font-weight: bold;
    color: #fff;
}

hr{
    width: 10%;
}

.error-message {
    color: #ff4444;
    font-size: 1rem;
    margin-bottom: 30px;
    min-height: 24px;
    visibility: hidden;
}

.error-message.show {
    visibility: visible;
}

.button-container {
    display: flex;
    gap: 15px;
}

button {
    padding: 12px 30px;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.decrement-btn,
.increment-btn {
    background-color: #fff;
    color: #000;
    border: 2px solid #fff;
}

.decrement-btn:hover,
.increment-btn:hover {
    background-color: #ddd;
}

.clear-btn {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.clear-btn:hover {
    background-color: #333;
}

.clear-btn.hidden {
    display: none;
}

button:active {
    transform: scale(0.95);
}