/* Premium Button Styles */
:root {
    --btn-blue: #3b82f6;
    --btn-blue-dark: #2563eb;
}

.btn-ai {
    background: linear-gradient(135deg, var(--btn-blue), var(--btn-blue-dark));
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.btn-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, var(--btn-blue-dark), var(--btn-blue));
}

.btn-quiz-start {
    background: linear-gradient(135deg, var(--btn-blue), var(--btn-blue-dark));
    color: white;
    border: none;
    padding: 12px 28px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn-quiz-start::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-quiz-start:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.2) inset;
}

.btn-quiz-start:hover::after {
    opacity: 1;
}