.home-card-section {
    margin: 80px auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px;
}

.home-card-container {
    background-color: var(--white-color);
    padding: 2px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.home-card-container:hover {
    transform: translateY(-10px);
}

.home-card-image {
    width: 100%;
    height: 300px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.home-card-timer {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 5px;
}

.timer-box {
    padding: 8px 5px;
    background-color: var(--primary-bg-color);
    border-radius: 8px;
    font-weight: bold;
    color: var(--white-color);
}

.home-card-title {
    font-size: 24px;
    font-weight: 700;
    margin: 20px 0;
    color: var(--black-color);
    text-align: center;
}

.home-card-description {
    font-size: 12px;
    color: var(--granite-gray-color);
    margin: 0 10px 15px;
}

.home-card-buttons {
    display: flex;
    justify-content: space-between;
    margin: 30px 5px;
}

.home-btn {
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
}

.home-btn-see-more {
    background-color: var(--secondary-bg-color);
    color: var(--white-color);
}

.home-btn-see-more:hover {
    background-color: var(--primary-bg-color);
}

.home-btn-start-now {
    background-color: var(--primary-bg-color);
    color: var(--white-color);
}

.home-btn-start-now:hover {
    background-color: var(--secondary-bg-color);
}

.home-btn-score {
    background-color: var(--accent-bg-color);
    color: var(--white-color);
}

.home-btn-score:hover {
    background-color: var(--primary-bg-color);
}

.quiz-running {
    font-size: 16px;
    font-weight: bold;
    color: var(--white-color);
    text-align: center;
    background-color: var(--primary-bg-color);
    padding: 10px;
    border-radius: 8px;
}

.quiz-over {
    font-size: 16px;
    font-weight: bold;
    color: var(--white-color);
    text-align: center;
    background-color: var(--secondary-bg-color);
    padding: 10px;
    border-radius: 8px;
}

.rand-number {
    display: flex;
    align-items: center;
    gap: 8px;
}

.rand-number .math-expression {
    font-size: 18px;
    font-weight: bold;
    color: var(--accent-bg-color);
    background: var(--anti-flash-white-color);
    padding: 10px 8px;
    border-radius: 8px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.2);
}

.rand-number input {
    padding: 10px;
    border: 2px solid var(--accent-bg-color);
    border-radius: 5px;
    font-size: 18px;
    flex: 1;
    max-width: 250px;
    outline: none;
}

.rand-number input::placeholder {
    color: #aaa;
    font-style: italic;
}

/* Video section */
.video-section {
    max-width: 1200px;
    margin: 20px auto;
    padding: 10px;
}

.video-section h2 {
    text-align: center;
    font-size: 30px;
    color: var(--secondary-bg-color);
    margin-bottom: 20px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.video-card {
    background-color: var(--white-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s;
}

.video-card:hover {
    transform: scale(1.05);
}

.video-card iframe {
    width: 100%;
    height: 200px;
    border: none;
}

.video-card .video-title {
    padding: 10px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--granite-gray-color);
    text-align: center;
}


@media screen and (max-width: 980px) {
    .home-card-section {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 680px) {
    .home-card-section {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media screen and (max-width: 380px) {
    .timer-box {
        padding: 3px;
        border-radius: 5px;
    }
}